/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 13:35:34,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 13:35:34,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 13:35:34,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 13:35:34,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 13:35:34,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 13:35:34,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 13:35:34,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 13:35:34,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 13:35:34,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 13:35:34,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 13:35:34,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 13:35:34,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 13:35:34,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 13:35:34,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 13:35:34,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 13:35:34,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 13:35:34,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 13:35:34,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 13:35:34,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 13:35:34,540 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 13:35:34,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 13:35:34,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 13:35:34,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 13:35:34,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 13:35:34,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 13:35:34,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 13:35:34,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 13:35:34,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 13:35:34,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 13:35:34,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-04-06 13:35:34,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 13:35:34,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 13:35:34,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 13:35:34,560 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 13:35:34,581 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 13:35:34,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 13:35:34,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 13:35:34,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 13:35:34,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 13:35:34,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 13:35:34,583 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 13:35:34,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 13:35:34,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 13:35:34,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 13:35:34,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 13:35:34,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 13:35:34,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 13:35:34,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 13:35:34,584 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 13:35:34,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 13:35:34,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 13:35:34,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 13:35:34,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 13:35:34,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 13:35:34,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 13:35:34,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 13:35:34,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 13:35:34,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 13:35:34,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 13:35:34,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 13:35:34,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 13:35:34,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 13:35:34,587 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 13:35:34,588 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 13:35:34,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 13:35:34,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 13:35:34,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 13:35:34,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 13:35:34,763 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 13:35:34,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-04-06 13:35:34,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d4004ae/eb8ca279c8884aabbab5dc5686105541/FLAG38521417a [2022-04-06 13:35:35,197 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 13:35:35,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2022-04-06 13:35:35,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d4004ae/eb8ca279c8884aabbab5dc5686105541/FLAG38521417a [2022-04-06 13:35:35,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d4004ae/eb8ca279c8884aabbab5dc5686105541 [2022-04-06 13:35:35,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 13:35:35,233 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 13:35:35,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 13:35:35,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 13:35:35,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 13:35:35,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:35:35" (1/1) ... [2022-04-06 13:35:35,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409419c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:35, skipping insertion in model container [2022-04-06 13:35:35,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:35:35" (1/1) ... [2022-04-06 13:35:35,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 13:35:35,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 13:35:35,475 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-1.c[2074,2087] [2022-04-06 13:35:35,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 13:35:35,654 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 13:35:35,674 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-1.c[2074,2087] [2022-04-06 13:35:35,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 13:35:35,764 INFO L208 MainTranslator]: Completed translation [2022-04-06 13:35:35,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:35 WrapperNode [2022-04-06 13:35:35,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 13:35:35,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 13:35:35,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 13:35:35,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 13:35:35,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:35" (1/1) ... [2022-04-06 13:35:35,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:35" (1/1) ... [2022-04-06 13:35:35,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:35" (1/1) ... [2022-04-06 13:35:35,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:35" (1/1) ... [2022-04-06 13:35:35,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:35" (1/1) ... [2022-04-06 13:35:35,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:35" (1/1) ... [2022-04-06 13:35:35,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:35" (1/1) ... [2022-04-06 13:35:35,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 13:35:35,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 13:35:35,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 13:35:35,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 13:35:35,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:35" (1/1) ... [2022-04-06 13:35:35,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 13:35:35,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 13:35:35,900 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 13:35:35,921 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 13:35:35,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 13:35:35,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 13:35:35,933 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 13:35:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-06 13:35:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-06 13:35:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-04-06 13:35:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-04-06 13:35:35,935 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-04-06 13:35:35,935 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-04-06 13:35:35,935 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-04-06 13:35:35,935 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-04-06 13:35:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-04-06 13:35:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-04-06 13:35:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-04-06 13:35:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-04-06 13:35:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-04-06 13:35:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-04-06 13:35:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-04-06 13:35:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-04-06 13:35:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-04-06 13:35:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-04-06 13:35:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-04-06 13:35:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-06 13:35:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 13:35:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-06 13:35:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-06 13:35:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-06 13:35:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-06 13:35:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-06 13:35:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-06 13:35:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-06 13:35:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 13:35:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 13:35:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 13:35:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 13:35:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 13:35:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 13:35:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 13:35:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-04-06 13:35:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-04-06 13:35:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-04-06 13:35:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-04-06 13:35:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-04-06 13:35:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-04-06 13:35:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-04-06 13:35:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-04-06 13:35:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-04-06 13:35:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-04-06 13:35:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-04-06 13:35:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-04-06 13:35:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-04-06 13:35:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-04-06 13:35:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-04-06 13:35:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-06 13:35:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-06 13:35:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-06 13:35:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-06 13:35:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-06 13:35:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-06 13:35:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-06 13:35:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-06 13:35:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-04-06 13:35:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-04-06 13:35:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-06 13:35:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 13:35:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-06 13:35:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 13:35:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 13:35:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 13:35:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 13:35:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 13:35:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 13:35:36,088 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 13:35:36,090 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 13:35:36,250 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:36,304 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-04-06 13:35:36,305 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-04-06 13:35:36,308 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:36,341 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-06 13:35:36,341 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-06 13:35:36,354 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:36,363 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-06 13:35:36,363 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-06 13:35:36,399 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:36,421 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-04-06 13:35:36,421 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-04-06 13:35:36,421 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-04-06 13:35:36,425 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:36,545 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-04-06 13:35:36,546 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-04-06 13:35:36,547 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:36,567 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-06 13:35:36,567 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-06 13:35:36,591 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:36,623 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-04-06 13:35:36,623 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-04-06 13:35:36,626 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:36,759 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-04-06 13:35:36,759 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-04-06 13:35:36,768 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:35:36,772 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 13:35:36,772 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 13:35:36,784 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 13:35:36,791 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 13:35:36,792 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 13:35:36,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:35:36 BoogieIcfgContainer [2022-04-06 13:35:36,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 13:35:36,794 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 13:35:36,794 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 13:35:36,800 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 13:35:36,802 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:35:36" (1/1) ... [2022-04-06 13:35:36,803 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 13:35:36,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 01:35:36 BasicIcfg [2022-04-06 13:35:36,844 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 13:35:36,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 13:35:36,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 13:35:36,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 13:35:36,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 01:35:35" (1/4) ... [2022-04-06 13:35:36,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@feb4871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:35:36, skipping insertion in model container [2022-04-06 13:35:36,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:35:35" (2/4) ... [2022-04-06 13:35:36,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@feb4871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:35:36, skipping insertion in model container [2022-04-06 13:35:36,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:35:36" (3/4) ... [2022-04-06 13:35:36,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@feb4871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 01:35:36, skipping insertion in model container [2022-04-06 13:35:36,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 01:35:36" (4/4) ... [2022-04-06 13:35:36,849 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.cqvasr [2022-04-06 13:35:36,852 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 13:35:36,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 13:35:36,895 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 13:35:36,901 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 13:35:36,901 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 13:35:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) [2022-04-06 13:35:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-06 13:35:36,932 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:36,933 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 13:35:36,936 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:36,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:36,945 INFO L85 PathProgramCache]: Analyzing trace with hash 784814983, now seen corresponding path program 1 times [2022-04-06 13:35:36,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:36,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125506382] [2022-04-06 13:35:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:36,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:37,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:37,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:37,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:37,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125506382] [2022-04-06 13:35:37,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125506382] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:37,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:37,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 13:35:37,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261128597] [2022-04-06 13:35:37,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:37,308 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 13:35:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:37,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 13:35:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-06 13:35:37,333 INFO L87 Difference]: Start difference. First operand has 517 states, 383 states have (on average 1.4882506527415145) internal successors, (570), 404 states have internal predecessors, (570), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) 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 13:35:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:39,264 INFO L93 Difference]: Finished difference Result 1047 states and 1683 transitions. [2022-04-06 13:35:39,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:39,266 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 13:35:39,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:39,277 INFO L225 Difference]: With dead ends: 1047 [2022-04-06 13:35:39,277 INFO L226 Difference]: Without dead ends: 665 [2022-04-06 13:35:39,281 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 13:35:39,284 INFO L913 BasicCegarLoop]: 741 mSDtfsCounter, 399 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:39,284 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1013 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 13:35:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-04-06 13:35:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 509. [2022-04-06 13:35:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 378 states have (on average 1.4576719576719577) internal successors, (551), 397 states have internal predecessors, (551), 103 states have call successors, (103), 29 states have call predecessors, (103), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-04-06 13:35:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 740 transitions. [2022-04-06 13:35:39,351 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 740 transitions. Word has length 20 [2022-04-06 13:35:39,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:39,351 INFO L478 AbstractCegarLoop]: Abstraction has 509 states and 740 transitions. [2022-04-06 13:35:39,351 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 13:35:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 740 transitions. [2022-04-06 13:35:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-06 13:35:39,352 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:39,352 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 13:35:39,352 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 13:35:39,352 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:39,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash -30338372, now seen corresponding path program 1 times [2022-04-06 13:35:39,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:39,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419292942] [2022-04-06 13:35:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:39,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:39,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:39,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:39,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419292942] [2022-04-06 13:35:39,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419292942] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:39,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:39,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:39,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249324024] [2022-04-06 13:35:39,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:39,482 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:39,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:39,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:39,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:39,483 INFO L87 Difference]: Start difference. First operand 509 states and 740 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 13:35:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:40,797 INFO L93 Difference]: Finished difference Result 967 states and 1429 transitions. [2022-04-06 13:35:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:40,797 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 13:35:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:40,807 INFO L225 Difference]: With dead ends: 967 [2022-04-06 13:35:40,807 INFO L226 Difference]: Without dead ends: 846 [2022-04-06 13:35:40,811 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 13:35:40,812 INFO L913 BasicCegarLoop]: 853 mSDtfsCounter, 1891 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:40,812 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1895 Valid, 1025 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 13:35:40,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-04-06 13:35:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 664. [2022-04-06 13:35:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 502 states have (on average 1.408366533864542) internal successors, (707), 510 states have internal predecessors, (707), 112 states have call successors, (112), 40 states have call predecessors, (112), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2022-04-06 13:35:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 964 transitions. [2022-04-06 13:35:40,895 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 964 transitions. Word has length 25 [2022-04-06 13:35:40,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:40,895 INFO L478 AbstractCegarLoop]: Abstraction has 664 states and 964 transitions. [2022-04-06 13:35:40,895 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 13:35:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 964 transitions. [2022-04-06 13:35:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-06 13:35:40,901 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:40,901 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 13:35:40,902 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 13:35:40,902 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:40,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:40,903 INFO L85 PathProgramCache]: Analyzing trace with hash -759392990, now seen corresponding path program 1 times [2022-04-06 13:35:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:40,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071280769] [2022-04-06 13:35:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:40,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:40,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:40,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:40,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:41,014 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 13:35:41,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:41,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071280769] [2022-04-06 13:35:41,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071280769] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:41,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:41,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:41,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58948576] [2022-04-06 13:35:41,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:41,015 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:41,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:41,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:41,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:41,016 INFO L87 Difference]: Start difference. First operand 664 states and 964 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 13:35:42,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:42,775 INFO L93 Difference]: Finished difference Result 1148 states and 1650 transitions. [2022-04-06 13:35:42,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:42,778 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 13:35:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:42,782 INFO L225 Difference]: With dead ends: 1148 [2022-04-06 13:35:42,782 INFO L226 Difference]: Without dead ends: 970 [2022-04-06 13:35:42,783 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 13:35:42,784 INFO L913 BasicCegarLoop]: 725 mSDtfsCounter, 1121 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:42,784 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 886 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 13:35:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-04-06 13:35:42,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 789. [2022-04-06 13:35:42,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 611 states have (on average 1.4042553191489362) internal successors, (858), 615 states have internal predecessors, (858), 114 states have call successors, (114), 46 states have call predecessors, (114), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2022-04-06 13:35:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1135 transitions. [2022-04-06 13:35:42,820 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1135 transitions. Word has length 30 [2022-04-06 13:35:42,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:42,820 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1135 transitions. [2022-04-06 13:35:42,820 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 13:35:42,820 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1135 transitions. [2022-04-06 13:35:42,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-06 13:35:42,821 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:42,821 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 13:35:42,821 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 13:35:42,821 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:42,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:42,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1280175921, now seen corresponding path program 1 times [2022-04-06 13:35:42,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:42,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663569106] [2022-04-06 13:35:42,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:42,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:42,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:42,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:42,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:42,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663569106] [2022-04-06 13:35:42,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663569106] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:42,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:42,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:42,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235795968] [2022-04-06 13:35:42,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:42,916 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:42,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:42,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:42,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:42,917 INFO L87 Difference]: Start difference. First operand 789 states and 1135 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 13:35:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:44,743 INFO L93 Difference]: Finished difference Result 1630 states and 2449 transitions. [2022-04-06 13:35:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 13:35:44,743 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 13:35:44,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:44,749 INFO L225 Difference]: With dead ends: 1630 [2022-04-06 13:35:44,749 INFO L226 Difference]: Without dead ends: 1344 [2022-04-06 13:35:44,750 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 13:35:44,751 INFO L913 BasicCegarLoop]: 1006 mSDtfsCounter, 1482 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:44,751 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1262 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 13:35:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2022-04-06 13:35:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 907. [2022-04-06 13:35:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 708 states have (on average 1.4138418079096045) internal successors, (1001), 711 states have internal predecessors, (1001), 127 states have call successors, (127), 54 states have call predecessors, (127), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2022-04-06 13:35:44,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1348 transitions. [2022-04-06 13:35:44,811 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1348 transitions. Word has length 31 [2022-04-06 13:35:44,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:44,812 INFO L478 AbstractCegarLoop]: Abstraction has 907 states and 1348 transitions. [2022-04-06 13:35:44,812 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 13:35:44,812 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1348 transitions. [2022-04-06 13:35:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-06 13:35:44,813 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:44,813 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 13:35:44,813 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-06 13:35:44,813 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:44,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:44,813 INFO L85 PathProgramCache]: Analyzing trace with hash 998226604, now seen corresponding path program 1 times [2022-04-06 13:35:44,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:44,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586900529] [2022-04-06 13:35:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:44,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:44,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:44,951 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 13:35:44,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:44,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586900529] [2022-04-06 13:35:44,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586900529] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:44,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:44,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:35:44,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256790585] [2022-04-06 13:35:44,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:44,952 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:35:44,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:44,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:35:44,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:35:44,953 INFO L87 Difference]: Start difference. First operand 907 states and 1348 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 13:35:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:46,913 INFO L93 Difference]: Finished difference Result 1632 states and 2483 transitions. [2022-04-06 13:35:46,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:35:46,914 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 13:35:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:46,918 INFO L225 Difference]: With dead ends: 1632 [2022-04-06 13:35:46,918 INFO L226 Difference]: Without dead ends: 1046 [2022-04-06 13:35:46,920 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 13:35:46,920 INFO L913 BasicCegarLoop]: 743 mSDtfsCounter, 2772 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2778 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:46,920 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2778 Valid, 1032 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 13:35:46,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-04-06 13:35:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 835. [2022-04-06 13:35:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 649 states have (on average 1.399075500770416) internal successors, (908), 653 states have internal predecessors, (908), 118 states have call successors, (118), 50 states have call predecessors, (118), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-04-06 13:35:46,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1203 transitions. [2022-04-06 13:35:46,975 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1203 transitions. Word has length 32 [2022-04-06 13:35:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:46,977 INFO L478 AbstractCegarLoop]: Abstraction has 835 states and 1203 transitions. [2022-04-06 13:35:46,977 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 13:35:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1203 transitions. [2022-04-06 13:35:46,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-06 13:35:46,979 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:46,979 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 13:35:46,979 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 13:35:46,980 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash 936943045, now seen corresponding path program 1 times [2022-04-06 13:35:46,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:46,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786316936] [2022-04-06 13:35:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:46,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:47,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:47,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:47,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:47,079 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 13:35:47,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:47,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786316936] [2022-04-06 13:35:47,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786316936] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:47,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:47,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:47,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420473815] [2022-04-06 13:35:47,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:47,080 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:47,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:47,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:47,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:47,081 INFO L87 Difference]: Start difference. First operand 835 states and 1203 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 13:35:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:48,738 INFO L93 Difference]: Finished difference Result 965 states and 1425 transitions. [2022-04-06 13:35:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:48,739 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 13:35:48,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:48,743 INFO L225 Difference]: With dead ends: 965 [2022-04-06 13:35:48,743 INFO L226 Difference]: Without dead ends: 961 [2022-04-06 13:35:48,743 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 13:35:48,744 INFO L913 BasicCegarLoop]: 713 mSDtfsCounter, 407 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:48,744 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 983 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 13:35:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-04-06 13:35:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 834. [2022-04-06 13:35:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 649 states have (on average 1.3959938366718028) internal successors, (906), 652 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 13:35:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1200 transitions. [2022-04-06 13:35:48,813 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1200 transitions. Word has length 36 [2022-04-06 13:35:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:48,813 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1200 transitions. [2022-04-06 13:35:48,813 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 13:35:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1200 transitions. [2022-04-06 13:35:48,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 13:35:48,817 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:48,817 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 13:35:48,817 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-06 13:35:48,818 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:48,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:48,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1670644950, now seen corresponding path program 1 times [2022-04-06 13:35:48,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:48,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126194182] [2022-04-06 13:35:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:48,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:48,936 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 13:35:48,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:48,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126194182] [2022-04-06 13:35:48,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126194182] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:48,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:48,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 13:35:48,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37147521] [2022-04-06 13:35:48,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:48,936 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 13:35:48,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:48,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 13:35:48,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-06 13:35:48,937 INFO L87 Difference]: Start difference. First operand 834 states and 1200 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 13:35:50,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:50,821 INFO L93 Difference]: Finished difference Result 1417 states and 2024 transitions. [2022-04-06 13:35:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:35:50,843 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 13:35:50,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:50,848 INFO L225 Difference]: With dead ends: 1417 [2022-04-06 13:35:50,848 INFO L226 Difference]: Without dead ends: 999 [2022-04-06 13:35:50,849 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:35:50,849 INFO L913 BasicCegarLoop]: 821 mSDtfsCounter, 764 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:50,850 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 1253 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 13:35:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-04-06 13:35:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 736. [2022-04-06 13:35:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 571 states have (on average 1.3870402802101576) internal successors, (792), 575 states have internal predecessors, (792), 106 states have call successors, (106), 45 states have call predecessors, (106), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2022-04-06 13:35:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1029 transitions. [2022-04-06 13:35:50,888 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1029 transitions. Word has length 39 [2022-04-06 13:35:50,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:50,888 INFO L478 AbstractCegarLoop]: Abstraction has 736 states and 1029 transitions. [2022-04-06 13:35:50,888 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 13:35:50,888 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1029 transitions. [2022-04-06 13:35:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-06 13:35:50,890 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:50,890 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 13:35:50,890 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-06 13:35:50,890 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:50,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1528829481, now seen corresponding path program 1 times [2022-04-06 13:35:50,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:50,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130470751] [2022-04-06 13:35:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:50,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:50,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:50,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:50,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:51,003 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 13:35:51,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:51,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130470751] [2022-04-06 13:35:51,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130470751] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:51,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:51,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:35:51,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147295752] [2022-04-06 13:35:51,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:51,004 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:35:51,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:51,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:35:51,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:35:51,005 INFO L87 Difference]: Start difference. First operand 736 states and 1029 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 13:35:52,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:52,208 INFO L93 Difference]: Finished difference Result 979 states and 1409 transitions. [2022-04-06 13:35:52,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:35:52,209 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 13:35:52,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:52,212 INFO L225 Difference]: With dead ends: 979 [2022-04-06 13:35:52,212 INFO L226 Difference]: Without dead ends: 959 [2022-04-06 13:35:52,213 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 13:35:52,213 INFO L913 BasicCegarLoop]: 672 mSDtfsCounter, 1483 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:52,214 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 772 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:35:52,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-04-06 13:35:52,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 762. [2022-04-06 13:35:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3983193277310924) internal successors, (832), 608 states have internal predecessors, (832), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-04-06 13:35:52,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1064 transitions. [2022-04-06 13:35:52,256 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1064 transitions. Word has length 40 [2022-04-06 13:35:52,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:52,257 INFO L478 AbstractCegarLoop]: Abstraction has 762 states and 1064 transitions. [2022-04-06 13:35:52,257 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 13:35:52,257 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1064 transitions. [2022-04-06 13:35:52,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-06 13:35:52,259 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:52,259 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 13:35:52,260 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-06 13:35:52,260 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:52,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash 689414503, now seen corresponding path program 1 times [2022-04-06 13:35:52,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:52,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14150595] [2022-04-06 13:35:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:52,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 13:35:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:52,354 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 13:35:52,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:52,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14150595] [2022-04-06 13:35:52,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14150595] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:52,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:52,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 13:35:52,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98702304] [2022-04-06 13:35:52,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:52,356 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 13:35:52,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:52,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 13:35:52,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 13:35:52,357 INFO L87 Difference]: Start difference. First operand 762 states and 1064 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 13:35:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:53,931 INFO L93 Difference]: Finished difference Result 1167 states and 1671 transitions. [2022-04-06 13:35:53,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:35:53,932 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 13:35:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:53,936 INFO L225 Difference]: With dead ends: 1167 [2022-04-06 13:35:53,936 INFO L226 Difference]: Without dead ends: 942 [2022-04-06 13:35:53,937 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 13:35:53,938 INFO L913 BasicCegarLoop]: 791 mSDtfsCounter, 921 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:53,939 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 1383 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:35:53,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-04-06 13:35:53,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 762. [2022-04-06 13:35:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3966386554621848) internal successors, (831), 608 states have internal predecessors, (831), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-04-06 13:35:53,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1063 transitions. [2022-04-06 13:35:53,995 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1063 transitions. Word has length 46 [2022-04-06 13:35:53,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:53,995 INFO L478 AbstractCegarLoop]: Abstraction has 762 states and 1063 transitions. [2022-04-06 13:35:53,995 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 13:35:53,996 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1063 transitions. [2022-04-06 13:35:53,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 13:35:53,997 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:53,997 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 13:35:53,997 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-06 13:35:53,997 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:53,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:53,998 INFO L85 PathProgramCache]: Analyzing trace with hash -735623654, now seen corresponding path program 1 times [2022-04-06 13:35:53,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:53,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202965128] [2022-04-06 13:35:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:53,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:54,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:54,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-06 13:35:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:35:54,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:54,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202965128] [2022-04-06 13:35:54,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202965128] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:54,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:54,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 13:35:54,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537131478] [2022-04-06 13:35:54,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:54,095 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 13:35:54,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:54,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 13:35:54,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 13:35:54,096 INFO L87 Difference]: Start difference. First operand 762 states and 1063 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 13:35:55,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:55,337 INFO L93 Difference]: Finished difference Result 964 states and 1383 transitions. [2022-04-06 13:35:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:35:55,337 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 13:35:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:55,340 INFO L225 Difference]: With dead ends: 964 [2022-04-06 13:35:55,341 INFO L226 Difference]: Without dead ends: 897 [2022-04-06 13:35:55,341 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:35:55,342 INFO L913 BasicCegarLoop]: 667 mSDtfsCounter, 1147 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:55,342 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1117 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:35:55,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-04-06 13:35:55,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 751. [2022-04-06 13:35:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 588 states have (on average 1.3979591836734695) internal successors, (822), 601 states have internal predecessors, (822), 106 states have call successors, (106), 46 states have call predecessors, (106), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2022-04-06 13:35:55,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1050 transitions. [2022-04-06 13:35:55,393 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1050 transitions. Word has length 47 [2022-04-06 13:35:55,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:55,393 INFO L478 AbstractCegarLoop]: Abstraction has 751 states and 1050 transitions. [2022-04-06 13:35:55,393 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 13:35:55,393 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1050 transitions. [2022-04-06 13:35:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 13:35:55,395 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:55,395 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 13:35:55,395 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-06 13:35:55,395 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:55,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:55,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1452242056, now seen corresponding path program 1 times [2022-04-06 13:35:55,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:55,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649939794] [2022-04-06 13:35:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:55,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:35:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:35:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:55,542 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 13:35:55,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:55,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649939794] [2022-04-06 13:35:55,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649939794] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:55,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:55,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:35:55,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377131842] [2022-04-06 13:35:55,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:55,543 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:35:55,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:55,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:35:55,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:35:55,544 INFO L87 Difference]: Start difference. First operand 751 states and 1050 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 13:35:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:57,818 INFO L93 Difference]: Finished difference Result 1067 states and 1515 transitions. [2022-04-06 13:35:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:35:57,819 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 13:35:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:57,822 INFO L225 Difference]: With dead ends: 1067 [2022-04-06 13:35:57,822 INFO L226 Difference]: Without dead ends: 1006 [2022-04-06 13:35:57,823 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 13:35:57,823 INFO L913 BasicCegarLoop]: 754 mSDtfsCounter, 1817 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:57,823 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 1741 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 3154 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 13:35:57,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-04-06 13:35:57,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 794. [2022-04-06 13:35:57,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 623 states have (on average 1.3964686998394864) internal successors, (870), 635 states have internal predecessors, (870), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-04-06 13:35:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1111 transitions. [2022-04-06 13:35:57,871 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1111 transitions. Word has length 48 [2022-04-06 13:35:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:57,871 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1111 transitions. [2022-04-06 13:35:57,871 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 13:35:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1111 transitions. [2022-04-06 13:35:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 13:35:57,873 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:57,873 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 13:35:57,873 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-06 13:35:57,873 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1568241764, now seen corresponding path program 1 times [2022-04-06 13:35:57,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:57,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377329381] [2022-04-06 13:35:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:57,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:57,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:57,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:57,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:35:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:35:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:58,022 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 13:35:58,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:58,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377329381] [2022-04-06 13:35:58,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377329381] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:58,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:58,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:35:58,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315623604] [2022-04-06 13:35:58,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:58,023 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:35:58,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:58,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:35:58,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:35:58,024 INFO L87 Difference]: Start difference. First operand 794 states and 1111 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 13:35:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:35:59,632 INFO L93 Difference]: Finished difference Result 952 states and 1368 transitions. [2022-04-06 13:35:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:35:59,633 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 13:35:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:35:59,636 INFO L225 Difference]: With dead ends: 952 [2022-04-06 13:35:59,636 INFO L226 Difference]: Without dead ends: 924 [2022-04-06 13:35:59,636 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-04-06 13:35:59,637 INFO L913 BasicCegarLoop]: 652 mSDtfsCounter, 2169 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:35:59,637 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2180 Valid, 1424 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 13:35:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-04-06 13:35:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 797. [2022-04-06 13:35:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3961661341853036) internal successors, (874), 638 states have internal predecessors, (874), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-04-06 13:35:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1115 transitions. [2022-04-06 13:35:59,685 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1115 transitions. Word has length 50 [2022-04-06 13:35:59,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:35:59,685 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1115 transitions. [2022-04-06 13:35:59,685 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 13:35:59,686 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1115 transitions. [2022-04-06 13:35:59,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 13:35:59,687 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:35:59,687 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 13:35:59,687 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-06 13:35:59,687 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:35:59,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:35:59,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1729653179, now seen corresponding path program 1 times [2022-04-06 13:35:59,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:35:59,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298639121] [2022-04-06 13:35:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:35:59,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:35:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:59,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:35:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:59,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:35:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:59,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:35:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:59,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:35:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:59,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:35:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:35:59,823 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 13:35:59,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:35:59,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298639121] [2022-04-06 13:35:59,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298639121] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:35:59,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:35:59,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:35:59,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846943627] [2022-04-06 13:35:59,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:35:59,832 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:35:59,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:35:59,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:35:59,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:35:59,833 INFO L87 Difference]: Start difference. First operand 797 states and 1115 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 13:36:01,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:01,517 INFO L93 Difference]: Finished difference Result 978 states and 1402 transitions. [2022-04-06 13:36:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:01,517 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 13:36:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:01,520 INFO L225 Difference]: With dead ends: 978 [2022-04-06 13:36:01,520 INFO L226 Difference]: Without dead ends: 914 [2022-04-06 13:36:01,520 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 13:36:01,520 INFO L913 BasicCegarLoop]: 652 mSDtfsCounter, 2233 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:01,521 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 1507 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:36:01,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-04-06 13:36:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 792. [2022-04-06 13:36:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 621 states have (on average 1.391304347826087) internal successors, (864), 633 states have internal predecessors, (864), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-04-06 13:36:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1105 transitions. [2022-04-06 13:36:01,572 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1105 transitions. Word has length 50 [2022-04-06 13:36:01,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:01,573 INFO L478 AbstractCegarLoop]: Abstraction has 792 states and 1105 transitions. [2022-04-06 13:36:01,573 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 13:36:01,573 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1105 transitions. [2022-04-06 13:36:01,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 13:36:01,574 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:01,574 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 13:36:01,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-06 13:36:01,575 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:01,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:01,575 INFO L85 PathProgramCache]: Analyzing trace with hash -111891045, now seen corresponding path program 1 times [2022-04-06 13:36:01,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:01,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249099899] [2022-04-06 13:36:01,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:01,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:01,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:01,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:01,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:01,686 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 13:36:01,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:01,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249099899] [2022-04-06 13:36:01,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249099899] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:01,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:01,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 13:36:01,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183840366] [2022-04-06 13:36:01,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:01,687 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 13:36:01,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:01,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 13:36:01,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 13:36:01,687 INFO L87 Difference]: Start difference. First operand 792 states and 1105 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 13:36:03,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:03,190 INFO L93 Difference]: Finished difference Result 1090 states and 1555 transitions. [2022-04-06 13:36:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 13:36:03,190 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 13:36:03,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:03,193 INFO L225 Difference]: With dead ends: 1090 [2022-04-06 13:36:03,193 INFO L226 Difference]: Without dead ends: 1074 [2022-04-06 13:36:03,194 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:03,194 INFO L913 BasicCegarLoop]: 799 mSDtfsCounter, 1242 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:03,194 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 1361 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:36:03,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-04-06 13:36:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 848. [2022-04-06 13:36:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 663 states have (on average 1.3725490196078431) internal successors, (910), 677 states have internal predecessors, (910), 112 states have call successors, (112), 51 states have call predecessors, (112), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2022-04-06 13:36:03,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1165 transitions. [2022-04-06 13:36:03,251 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1165 transitions. Word has length 50 [2022-04-06 13:36:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:03,252 INFO L478 AbstractCegarLoop]: Abstraction has 848 states and 1165 transitions. [2022-04-06 13:36:03,252 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 13:36:03,252 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1165 transitions. [2022-04-06 13:36:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 13:36:03,254 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:03,254 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] [2022-04-06 13:36:03,254 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-06 13:36:03,254 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:03,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:03,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1040673977, now seen corresponding path program 1 times [2022-04-06 13:36:03,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:03,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156856277] [2022-04-06 13:36:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:03,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:03,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:03,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:36:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:03,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 13:36:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:03,357 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 13:36:03,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:03,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156856277] [2022-04-06 13:36:03,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156856277] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:03,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:03,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:36:03,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928151196] [2022-04-06 13:36:03,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:03,358 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:36:03,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:03,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:36:03,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:03,358 INFO L87 Difference]: Start difference. First operand 848 states and 1165 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 13:36:04,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:04,487 INFO L93 Difference]: Finished difference Result 1183 states and 1669 transitions. [2022-04-06 13:36:04,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:04,488 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 13:36:04,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:04,491 INFO L225 Difference]: With dead ends: 1183 [2022-04-06 13:36:04,491 INFO L226 Difference]: Without dead ends: 937 [2022-04-06 13:36:04,492 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 13:36:04,492 INFO L913 BasicCegarLoop]: 641 mSDtfsCounter, 1064 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:04,492 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1097 Valid, 1153 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:36:04,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-04-06 13:36:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 817. [2022-04-06 13:36:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 639 states have (on average 1.3724569640062598) internal successors, (877), 651 states have internal predecessors, (877), 110 states have call successors, (110), 50 states have call predecessors, (110), 67 states have return successors, (138), 121 states have call predecessors, (138), 103 states have call successors, (138) [2022-04-06 13:36:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1125 transitions. [2022-04-06 13:36:04,545 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1125 transitions. Word has length 54 [2022-04-06 13:36:04,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:04,545 INFO L478 AbstractCegarLoop]: Abstraction has 817 states and 1125 transitions. [2022-04-06 13:36:04,545 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 13:36:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1125 transitions. [2022-04-06 13:36:04,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 13:36:04,546 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:04,546 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 13:36:04,547 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-06 13:36:04,547 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:04,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:04,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1255093406, now seen corresponding path program 1 times [2022-04-06 13:36:04,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:04,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859065867] [2022-04-06 13:36:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:04,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:04,669 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 13:36:04,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:04,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859065867] [2022-04-06 13:36:04,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859065867] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:04,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:04,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:36:04,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565258491] [2022-04-06 13:36:04,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:04,671 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:36:04,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:04,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:36:04,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:36:04,672 INFO L87 Difference]: Start difference. First operand 817 states and 1125 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 13:36:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:06,362 INFO L93 Difference]: Finished difference Result 965 states and 1370 transitions. [2022-04-06 13:36:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:36:06,362 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 13:36:06,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:06,365 INFO L225 Difference]: With dead ends: 965 [2022-04-06 13:36:06,365 INFO L226 Difference]: Without dead ends: 960 [2022-04-06 13:36:06,365 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 13:36:06,366 INFO L913 BasicCegarLoop]: 694 mSDtfsCounter, 493 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:06,366 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 1250 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 13:36:06,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-04-06 13:36:06,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 836. [2022-04-06 13:36:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 655 states have (on average 1.369465648854962) internal successors, (897), 668 states have internal predecessors, (897), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2022-04-06 13:36:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1148 transitions. [2022-04-06 13:36:06,419 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1148 transitions. Word has length 52 [2022-04-06 13:36:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:06,420 INFO L478 AbstractCegarLoop]: Abstraction has 836 states and 1148 transitions. [2022-04-06 13:36:06,420 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 13:36:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1148 transitions. [2022-04-06 13:36:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 13:36:06,421 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:06,421 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 13:36:06,422 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-06 13:36:06,422 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:06,422 INFO L85 PathProgramCache]: Analyzing trace with hash 856883353, now seen corresponding path program 1 times [2022-04-06 13:36:06,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:06,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469408337] [2022-04-06 13:36:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:06,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:06,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:06,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469408337] [2022-04-06 13:36:06,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469408337] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:06,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:06,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:06,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224902142] [2022-04-06 13:36:06,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:06,688 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:06,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:06,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:06,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:06,689 INFO L87 Difference]: Start difference. First operand 836 states and 1148 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 13:36:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:08,718 INFO L93 Difference]: Finished difference Result 981 states and 1388 transitions. [2022-04-06 13:36:08,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:08,718 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 13:36:08,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:08,721 INFO L225 Difference]: With dead ends: 981 [2022-04-06 13:36:08,721 INFO L226 Difference]: Without dead ends: 977 [2022-04-06 13:36:08,721 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 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 13:36:08,722 INFO L913 BasicCegarLoop]: 707 mSDtfsCounter, 724 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 3855 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 4132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:08,722 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 2449 Invalid, 4132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 3855 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-06 13:36:08,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-04-06 13:36:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2022-04-06 13:36:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 671 states have (on average 1.3621460506706409) internal successors, (914), 685 states have internal predecessors, (914), 112 states have call successors, (112), 51 states have call predecessors, (112), 71 states have return successors, (143), 126 states have call predecessors, (143), 105 states have call successors, (143) [2022-04-06 13:36:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1169 transitions. [2022-04-06 13:36:08,776 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1169 transitions. Word has length 51 [2022-04-06 13:36:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:08,776 INFO L478 AbstractCegarLoop]: Abstraction has 855 states and 1169 transitions. [2022-04-06 13:36:08,776 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 13:36:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1169 transitions. [2022-04-06 13:36:08,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 13:36:08,778 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:08,778 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 13:36:08,778 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-06 13:36:08,778 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:08,778 INFO L85 PathProgramCache]: Analyzing trace with hash 856915097, now seen corresponding path program 1 times [2022-04-06 13:36:08,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:08,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508523112] [2022-04-06 13:36:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:08,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:08,914 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 13:36:08,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:08,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508523112] [2022-04-06 13:36:08,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508523112] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:08,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:08,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:08,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009201635] [2022-04-06 13:36:08,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:08,915 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:08,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:08,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:08,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:08,916 INFO L87 Difference]: Start difference. First operand 855 states and 1169 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 13:36:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:10,823 INFO L93 Difference]: Finished difference Result 990 states and 1399 transitions. [2022-04-06 13:36:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:36:10,823 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 13:36:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:10,826 INFO L225 Difference]: With dead ends: 990 [2022-04-06 13:36:10,827 INFO L226 Difference]: Without dead ends: 966 [2022-04-06 13:36:10,828 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 13:36:10,828 INFO L913 BasicCegarLoop]: 706 mSDtfsCounter, 1084 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 3912 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 4328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 3912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:10,828 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 2379 Invalid, 4328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 3912 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-06 13:36:10,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-04-06 13:36:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 842. [2022-04-06 13:36:10,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3666666666666667) internal successors, (902), 674 states have internal predecessors, (902), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-04-06 13:36:10,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1155 transitions. [2022-04-06 13:36:10,885 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1155 transitions. Word has length 51 [2022-04-06 13:36:10,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:10,885 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1155 transitions. [2022-04-06 13:36:10,885 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 13:36:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1155 transitions. [2022-04-06 13:36:10,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-06 13:36:10,886 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:10,887 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 13:36:10,887 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-06 13:36:10,887 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:10,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:10,887 INFO L85 PathProgramCache]: Analyzing trace with hash -222651470, now seen corresponding path program 1 times [2022-04-06 13:36:10,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:10,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351538266] [2022-04-06 13:36:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:10,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:10,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:10,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:10,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:11,099 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 13:36:11,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:11,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351538266] [2022-04-06 13:36:11,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351538266] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:11,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:11,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:36:11,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130370888] [2022-04-06 13:36:11,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:11,101 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:36:11,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:11,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:36:11,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:11,101 INFO L87 Difference]: Start difference. First operand 842 states and 1155 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 13:36:13,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:13,486 INFO L93 Difference]: Finished difference Result 974 states and 1378 transitions. [2022-04-06 13:36:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:13,486 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 13:36:13,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:13,489 INFO L225 Difference]: With dead ends: 974 [2022-04-06 13:36:13,489 INFO L226 Difference]: Without dead ends: 968 [2022-04-06 13:36:13,491 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 13:36:13,493 INFO L913 BasicCegarLoop]: 659 mSDtfsCounter, 1254 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 3454 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 3835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 3454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:13,493 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1280 Valid, 1672 Invalid, 3835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 3454 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-06 13:36:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-04-06 13:36:13,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 842. [2022-04-06 13:36:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3651515151515152) internal successors, (901), 674 states have internal predecessors, (901), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-04-06 13:36:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1154 transitions. [2022-04-06 13:36:13,552 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1154 transitions. Word has length 53 [2022-04-06 13:36:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:13,552 INFO L478 AbstractCegarLoop]: Abstraction has 842 states and 1154 transitions. [2022-04-06 13:36:13,552 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 13:36:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1154 transitions. [2022-04-06 13:36:13,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 13:36:13,555 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:13,555 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 13:36:13,555 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-06 13:36:13,556 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:13,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:13,556 INFO L85 PathProgramCache]: Analyzing trace with hash 179775437, now seen corresponding path program 1 times [2022-04-06 13:36:13,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:13,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583984966] [2022-04-06 13:36:13,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:13,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:13,681 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 13:36:13,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:13,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583984966] [2022-04-06 13:36:13,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583984966] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:13,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:13,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:36:13,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982897157] [2022-04-06 13:36:13,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:13,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:36:13,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:13,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:36:13,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:36:13,683 INFO L87 Difference]: Start difference. First operand 842 states and 1154 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 13:36:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:15,437 INFO L93 Difference]: Finished difference Result 979 states and 1383 transitions. [2022-04-06 13:36:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:15,437 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 13:36:15,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:15,440 INFO L225 Difference]: With dead ends: 979 [2022-04-06 13:36:15,440 INFO L226 Difference]: Without dead ends: 943 [2022-04-06 13:36:15,441 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-04-06 13:36:15,441 INFO L913 BasicCegarLoop]: 659 mSDtfsCounter, 1580 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:15,441 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1595 Valid, 1287 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:36:15,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-04-06 13:36:15,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 815. [2022-04-06 13:36:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3746081504702194) internal successors, (877), 651 states have internal predecessors, (877), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-04-06 13:36:15,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1124 transitions. [2022-04-06 13:36:15,511 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1124 transitions. Word has length 52 [2022-04-06 13:36:15,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:15,511 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1124 transitions. [2022-04-06 13:36:15,511 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 13:36:15,511 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1124 transitions. [2022-04-06 13:36:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 13:36:15,513 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:15,513 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 13:36:15,513 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-06 13:36:15,513 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash 760121073, now seen corresponding path program 1 times [2022-04-06 13:36:15,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:15,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570909067] [2022-04-06 13:36:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:15,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:15,730 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 13:36:15,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:15,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570909067] [2022-04-06 13:36:15,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570909067] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:15,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:15,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:36:15,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699479497] [2022-04-06 13:36:15,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:15,732 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:36:15,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:15,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:36:15,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:15,733 INFO L87 Difference]: Start difference. First operand 815 states and 1124 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 13:36:17,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:17,947 INFO L93 Difference]: Finished difference Result 945 states and 1345 transitions. [2022-04-06 13:36:17,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:17,947 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 13:36:17,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:17,950 INFO L225 Difference]: With dead ends: 945 [2022-04-06 13:36:17,950 INFO L226 Difference]: Without dead ends: 939 [2022-04-06 13:36:17,951 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 13:36:17,951 INFO L913 BasicCegarLoop]: 630 mSDtfsCounter, 1895 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 3117 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1921 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 3767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 3117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:17,951 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1921 Valid, 1404 Invalid, 3767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 3117 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 13:36:17,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-04-06 13:36:18,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 815. [2022-04-06 13:36:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3730407523510972) internal successors, (876), 651 states have internal predecessors, (876), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-04-06 13:36:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1123 transitions. [2022-04-06 13:36:18,011 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1123 transitions. Word has length 54 [2022-04-06 13:36:18,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:18,011 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1123 transitions. [2022-04-06 13:36:18,011 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 13:36:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1123 transitions. [2022-04-06 13:36:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 13:36:18,012 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:18,012 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 13:36:18,013 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-06 13:36:18,013 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1504848646, now seen corresponding path program 1 times [2022-04-06 13:36:18,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:18,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816829840] [2022-04-06 13:36:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:18,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:18,223 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 13:36:18,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:18,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816829840] [2022-04-06 13:36:18,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816829840] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:18,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:18,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:36:18,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40663746] [2022-04-06 13:36:18,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:18,224 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:36:18,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:18,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:36:18,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:18,224 INFO L87 Difference]: Start difference. First operand 815 states and 1123 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 13:36:20,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:20,469 INFO L93 Difference]: Finished difference Result 966 states and 1372 transitions. [2022-04-06 13:36:20,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:36:20,470 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 13:36:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:20,473 INFO L225 Difference]: With dead ends: 966 [2022-04-06 13:36:20,473 INFO L226 Difference]: Without dead ends: 926 [2022-04-06 13:36:20,473 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 13:36:20,474 INFO L913 BasicCegarLoop]: 678 mSDtfsCounter, 1069 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 4452 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 4888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 4452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:20,474 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 2475 Invalid, 4888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 4452 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-06 13:36:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-04-06 13:36:20,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 806. [2022-04-06 13:36:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 631 states have (on average 1.3565768621236134) internal successors, (856), 644 states have internal predecessors, (856), 107 states have call successors, (107), 49 states have call predecessors, (107), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2022-04-06 13:36:20,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1099 transitions. [2022-04-06 13:36:20,533 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1099 transitions. Word has length 55 [2022-04-06 13:36:20,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:20,533 INFO L478 AbstractCegarLoop]: Abstraction has 806 states and 1099 transitions. [2022-04-06 13:36:20,533 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 13:36:20,534 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1099 transitions. [2022-04-06 13:36:20,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-06 13:36:20,535 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:20,535 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 13:36:20,535 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-06 13:36:20,535 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:20,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:20,536 INFO L85 PathProgramCache]: Analyzing trace with hash -755849646, now seen corresponding path program 1 times [2022-04-06 13:36:20,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:20,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442449299] [2022-04-06 13:36:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:20,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:36:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442449299] [2022-04-06 13:36:20,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442449299] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:20,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:20,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:36:20,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81414728] [2022-04-06 13:36:20,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:20,768 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:36:20,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:20,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:36:20,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:20,768 INFO L87 Difference]: Start difference. First operand 806 states and 1099 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 13:36:23,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:23,574 INFO L93 Difference]: Finished difference Result 942 states and 1326 transitions. [2022-04-06 13:36:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:23,574 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 13:36:23,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:23,577 INFO L225 Difference]: With dead ends: 942 [2022-04-06 13:36:23,577 INFO L226 Difference]: Without dead ends: 924 [2022-04-06 13:36:23,577 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 13:36:23,578 INFO L913 BasicCegarLoop]: 673 mSDtfsCounter, 338 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 5915 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 6054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 5915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:23,578 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2828 Invalid, 6054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 5915 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-04-06 13:36:23,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-04-06 13:36:23,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 804. [2022-04-06 13:36:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 630 states have (on average 1.3555555555555556) internal successors, (854), 643 states have internal predecessors, (854), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-04-06 13:36:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1095 transitions. [2022-04-06 13:36:23,638 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1095 transitions. Word has length 56 [2022-04-06 13:36:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:23,638 INFO L478 AbstractCegarLoop]: Abstraction has 804 states and 1095 transitions. [2022-04-06 13:36:23,638 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 13:36:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1095 transitions. [2022-04-06 13:36:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 13:36:23,639 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:23,639 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 13:36:23,640 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-06 13:36:23,640 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:23,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:23,640 INFO L85 PathProgramCache]: Analyzing trace with hash -303401055, now seen corresponding path program 1 times [2022-04-06 13:36:23,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:23,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362361864] [2022-04-06 13:36:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:23,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:36:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:23,814 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 13:36:23,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:23,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362361864] [2022-04-06 13:36:23,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362361864] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:23,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:23,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:36:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368680579] [2022-04-06 13:36:23,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:23,817 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:36:23,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:23,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:36:23,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:23,817 INFO L87 Difference]: Start difference. First operand 804 states and 1095 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 13:36:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:26,231 INFO L93 Difference]: Finished difference Result 937 states and 1319 transitions. [2022-04-06 13:36:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:26,231 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 13:36:26,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:26,233 INFO L225 Difference]: With dead ends: 937 [2022-04-06 13:36:26,233 INFO L226 Difference]: Without dead ends: 919 [2022-04-06 13:36:26,234 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 13:36:26,235 INFO L913 BasicCegarLoop]: 657 mSDtfsCounter, 350 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 5447 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 5587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 5447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:26,235 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2673 Invalid, 5587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 5447 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-06 13:36:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-04-06 13:36:26,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 799. [2022-04-06 13:36:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.3556618819776713) internal successors, (850), 640 states have internal predecessors, (850), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-04-06 13:36:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1088 transitions. [2022-04-06 13:36:26,296 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1088 transitions. Word has length 55 [2022-04-06 13:36:26,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:26,297 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1088 transitions. [2022-04-06 13:36:26,297 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 13:36:26,297 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1088 transitions. [2022-04-06 13:36:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-06 13:36:26,308 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:26,308 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 13:36:26,308 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-06 13:36:26,308 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:26,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:26,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1335002991, now seen corresponding path program 1 times [2022-04-06 13:36:26,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:26,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245488372] [2022-04-06 13:36:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:26,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:26,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:26,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:26,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:26,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:36:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:26,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:36:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:26,442 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 13:36:26,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:26,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245488372] [2022-04-06 13:36:26,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245488372] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:26,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:26,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:36:26,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444447307] [2022-04-06 13:36:26,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:26,443 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:36:26,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:26,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:36:26,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:26,444 INFO L87 Difference]: Start difference. First operand 799 states and 1088 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 13:36:28,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:28,526 INFO L93 Difference]: Finished difference Result 984 states and 1370 transitions. [2022-04-06 13:36:28,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:36:28,526 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 13:36:28,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:28,529 INFO L225 Difference]: With dead ends: 984 [2022-04-06 13:36:28,529 INFO L226 Difference]: Without dead ends: 941 [2022-04-06 13:36:28,530 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 13:36:28,530 INFO L913 BasicCegarLoop]: 678 mSDtfsCounter, 1160 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 2928 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:28,530 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 1343 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2928 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 13:36:28,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-04-06 13:36:28,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 799. [2022-04-06 13:36:28,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.354066985645933) internal successors, (849), 640 states have internal predecessors, (849), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-04-06 13:36:28,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1087 transitions. [2022-04-06 13:36:28,604 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1087 transitions. Word has length 56 [2022-04-06 13:36:28,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:28,604 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1087 transitions. [2022-04-06 13:36:28,604 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 13:36:28,604 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1087 transitions. [2022-04-06 13:36:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-06 13:36:28,605 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:28,606 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 13:36:28,606 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-06 13:36:28,606 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:28,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:28,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1948386428, now seen corresponding path program 1 times [2022-04-06 13:36:28,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:28,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357385679] [2022-04-06 13:36:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:28,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 13:36:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,717 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 13:36:28,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:28,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357385679] [2022-04-06 13:36:28,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357385679] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:28,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:28,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:36:28,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693531168] [2022-04-06 13:36:28,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:28,718 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:36:28,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:36:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:28,719 INFO L87 Difference]: Start difference. First operand 799 states and 1087 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 13:36:30,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:30,171 INFO L93 Difference]: Finished difference Result 1186 states and 1642 transitions. [2022-04-06 13:36:30,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:36:30,172 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 13:36:30,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:30,174 INFO L225 Difference]: With dead ends: 1186 [2022-04-06 13:36:30,175 INFO L226 Difference]: Without dead ends: 1023 [2022-04-06 13:36:30,175 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 13:36:30,175 INFO L913 BasicCegarLoop]: 663 mSDtfsCounter, 677 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:30,176 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 1241 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 13:36:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2022-04-06 13:36:30,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 840. [2022-04-06 13:36:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 660 states have (on average 1.3424242424242425) internal successors, (886), 672 states have internal predecessors, (886), 106 states have call successors, (106), 53 states have call predecessors, (106), 73 states have return successors, (135), 121 states have call predecessors, (135), 100 states have call successors, (135) [2022-04-06 13:36:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1127 transitions. [2022-04-06 13:36:30,238 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1127 transitions. Word has length 61 [2022-04-06 13:36:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:30,238 INFO L478 AbstractCegarLoop]: Abstraction has 840 states and 1127 transitions. [2022-04-06 13:36:30,238 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 13:36:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1127 transitions. [2022-04-06 13:36:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 13:36:30,239 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:30,239 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 13:36:30,239 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-06 13:36:30,239 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:30,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1337798748, now seen corresponding path program 1 times [2022-04-06 13:36:30,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:30,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855144550] [2022-04-06 13:36:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:30,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 13:36:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:30,502 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 13:36:30,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:30,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855144550] [2022-04-06 13:36:30,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855144550] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:30,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:30,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 13:36:30,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229443153] [2022-04-06 13:36:30,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:30,503 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 13:36:30,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:30,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 13:36:30,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:36:30,503 INFO L87 Difference]: Start difference. First operand 840 states and 1127 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 13:36:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:33,117 INFO L93 Difference]: Finished difference Result 1008 states and 1399 transitions. [2022-04-06 13:36:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:36:33,118 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 13:36:33,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:33,120 INFO L225 Difference]: With dead ends: 1008 [2022-04-06 13:36:33,121 INFO L226 Difference]: Without dead ends: 984 [2022-04-06 13:36:33,121 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 13:36:33,121 INFO L913 BasicCegarLoop]: 655 mSDtfsCounter, 1013 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 5966 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 6392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 5966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:33,121 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 3417 Invalid, 6392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 5966 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-06 13:36:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-04-06 13:36:33,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 838. [2022-04-06 13:36:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 659 states have (on average 1.3414264036418817) internal successors, (884), 671 states have internal predecessors, (884), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (134), 120 states have call predecessors, (134), 99 states have call successors, (134) [2022-04-06 13:36:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1123 transitions. [2022-04-06 13:36:33,183 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1123 transitions. Word has length 62 [2022-04-06 13:36:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:33,183 INFO L478 AbstractCegarLoop]: Abstraction has 838 states and 1123 transitions. [2022-04-06 13:36:33,183 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 13:36:33,183 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1123 transitions. [2022-04-06 13:36:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-06 13:36:33,184 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:33,184 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 13:36:33,184 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-04-06 13:36:33,184 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:33,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1214008405, now seen corresponding path program 1 times [2022-04-06 13:36:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:33,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621586645] [2022-04-06 13:36:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:33,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:33,536 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 13:36:33,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:33,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621586645] [2022-04-06 13:36:33,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621586645] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:33,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:33,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 13:36:33,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742742311] [2022-04-06 13:36:33,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:33,539 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 13:36:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:33,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 13:36:33,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:36:33,539 INFO L87 Difference]: Start difference. First operand 838 states and 1123 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 13:36:36,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:36,360 INFO L93 Difference]: Finished difference Result 1006 states and 1395 transitions. [2022-04-06 13:36:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:36:36,360 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 13:36:36,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:36,363 INFO L225 Difference]: With dead ends: 1006 [2022-04-06 13:36:36,363 INFO L226 Difference]: Without dead ends: 980 [2022-04-06 13:36:36,367 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-04-06 13:36:36,367 INFO L913 BasicCegarLoop]: 634 mSDtfsCounter, 1331 mSDsluCounter, 2559 mSDsCounter, 0 mSdLazyCounter, 6276 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 6826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 6276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:36,368 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 3193 Invalid, 6826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 6276 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-04-06 13:36:36,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-04-06 13:36:36,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 837. [2022-04-06 13:36:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 658 states have (on average 1.3267477203647415) internal successors, (873), 670 states have internal predecessors, (873), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (134), 120 states have call predecessors, (134), 99 states have call successors, (134) [2022-04-06 13:36:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1112 transitions. [2022-04-06 13:36:36,430 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1112 transitions. Word has length 59 [2022-04-06 13:36:36,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:36,430 INFO L478 AbstractCegarLoop]: Abstraction has 837 states and 1112 transitions. [2022-04-06 13:36:36,430 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 13:36:36,430 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1112 transitions. [2022-04-06 13:36:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 13:36:36,431 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:36,431 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 13:36:36,431 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-06 13:36:36,432 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:36,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash -55485367, now seen corresponding path program 1 times [2022-04-06 13:36:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:36,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179273141] [2022-04-06 13:36:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:36,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:36,724 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 13:36:36,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:36,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179273141] [2022-04-06 13:36:36,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179273141] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:36,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:36,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:36:36,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200446882] [2022-04-06 13:36:36,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:36,725 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:36:36,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:36,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:36:36,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:36,726 INFO L87 Difference]: Start difference. First operand 837 states and 1112 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 13:36:39,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:39,454 INFO L93 Difference]: Finished difference Result 995 states and 1369 transitions. [2022-04-06 13:36:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 13:36:39,455 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 13:36:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:39,457 INFO L225 Difference]: With dead ends: 995 [2022-04-06 13:36:39,457 INFO L226 Difference]: Without dead ends: 975 [2022-04-06 13:36:39,458 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 13:36:39,458 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 324 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 5838 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 5973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 5838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:39,458 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2924 Invalid, 5973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 5838 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-04-06 13:36:39,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-04-06 13:36:39,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 834. [2022-04-06 13:36:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 656 states have (on average 1.326219512195122) internal successors, (870), 668 states have internal predecessors, (870), 104 states have call successors, (104), 53 states have call predecessors, (104), 73 states have return successors, (133), 119 states have call predecessors, (133), 98 states have call successors, (133) [2022-04-06 13:36:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1107 transitions. [2022-04-06 13:36:39,525 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1107 transitions. Word has length 58 [2022-04-06 13:36:39,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:39,525 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1107 transitions. [2022-04-06 13:36:39,525 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 13:36:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1107 transitions. [2022-04-06 13:36:39,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 13:36:39,527 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:39,527 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 13:36:39,527 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-06 13:36:39,527 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:39,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:39,527 INFO L85 PathProgramCache]: Analyzing trace with hash -57775299, now seen corresponding path program 1 times [2022-04-06 13:36:39,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:39,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787694569] [2022-04-06 13:36:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:39,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 13:36:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:39,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:39,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787694569] [2022-04-06 13:36:39,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787694569] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:39,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:39,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:36:39,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992830243] [2022-04-06 13:36:39,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:39,689 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:36:39,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:39,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:36:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:36:39,689 INFO L87 Difference]: Start difference. First operand 834 states and 1107 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 13:36:41,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:41,191 INFO L93 Difference]: Finished difference Result 1141 states and 1604 transitions. [2022-04-06 13:36:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:36:41,192 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 13:36:41,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:41,204 INFO L225 Difference]: With dead ends: 1141 [2022-04-06 13:36:41,204 INFO L226 Difference]: Without dead ends: 1036 [2022-04-06 13:36:41,205 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 13:36:41,205 INFO L913 BasicCegarLoop]: 628 mSDtfsCounter, 431 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:41,206 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1349 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1619 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 13:36:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-04-06 13:36:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 841. [2022-04-06 13:36:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 661 states have (on average 1.3267776096822996) internal successors, (877), 674 states have internal predecessors, (877), 105 states have call successors, (105), 53 states have call predecessors, (105), 74 states have return successors, (140), 120 states have call predecessors, (140), 99 states have call successors, (140) [2022-04-06 13:36:41,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1122 transitions. [2022-04-06 13:36:41,271 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1122 transitions. Word has length 60 [2022-04-06 13:36:41,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:41,272 INFO L478 AbstractCegarLoop]: Abstraction has 841 states and 1122 transitions. [2022-04-06 13:36:41,272 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 13:36:41,272 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1122 transitions. [2022-04-06 13:36:41,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 13:36:41,273 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:41,273 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 13:36:41,273 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-06 13:36:41,273 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:41,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:41,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2067879140, now seen corresponding path program 1 times [2022-04-06 13:36:41,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:41,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962174316] [2022-04-06 13:36:41,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:41,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 13:36:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,498 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 13:36:41,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:41,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962174316] [2022-04-06 13:36:41,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962174316] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:41,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:41,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:36:41,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358025226] [2022-04-06 13:36:41,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:41,499 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:36:41,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:41,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:36:41,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:41,499 INFO L87 Difference]: Start difference. First operand 841 states and 1122 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 13:36:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:43,621 INFO L93 Difference]: Finished difference Result 1008 states and 1400 transitions. [2022-04-06 13:36:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:36:43,622 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 13:36:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:43,624 INFO L225 Difference]: With dead ends: 1008 [2022-04-06 13:36:43,624 INFO L226 Difference]: Without dead ends: 983 [2022-04-06 13:36:43,624 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 13:36:43,625 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 981 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 4406 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 4802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 4406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:43,625 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 2590 Invalid, 4802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 4406 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 13:36:43,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-04-06 13:36:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 839. [2022-04-06 13:36:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 660 states have (on average 1.3257575757575757) internal successors, (875), 673 states have internal predecessors, (875), 104 states have call successors, (104), 53 states have call predecessors, (104), 74 states have return successors, (139), 119 states have call predecessors, (139), 98 states have call successors, (139) [2022-04-06 13:36:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1118 transitions. [2022-04-06 13:36:43,689 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1118 transitions. Word has length 60 [2022-04-06 13:36:43,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:43,689 INFO L478 AbstractCegarLoop]: Abstraction has 839 states and 1118 transitions. [2022-04-06 13:36:43,689 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 13:36:43,689 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1118 transitions. [2022-04-06 13:36:43,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-06 13:36:43,690 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:43,691 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 13:36:43,691 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-06 13:36:43,691 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:43,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:43,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1557615113, now seen corresponding path program 1 times [2022-04-06 13:36:43,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:43,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872398187] [2022-04-06 13:36:43,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:43,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:43,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:43,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:43,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:43,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:43,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 13:36:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:43,892 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 13:36:43,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:43,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872398187] [2022-04-06 13:36:43,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872398187] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:43,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:43,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:36:43,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462158975] [2022-04-06 13:36:43,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:43,893 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:36:43,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:43,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:36:43,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:43,894 INFO L87 Difference]: Start difference. First operand 839 states and 1118 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 13:36:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:46,193 INFO L93 Difference]: Finished difference Result 1036 states and 1425 transitions. [2022-04-06 13:36:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:36:46,194 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 13:36:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:46,196 INFO L225 Difference]: With dead ends: 1036 [2022-04-06 13:36:46,196 INFO L226 Difference]: Without dead ends: 968 [2022-04-06 13:36:46,197 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 13:36:46,197 INFO L913 BasicCegarLoop]: 620 mSDtfsCounter, 963 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 5211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:46,197 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 2588 Invalid, 5211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-06 13:36:46,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-04-06 13:36:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 827. [2022-04-06 13:36:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 651 states have (on average 1.3210445468509984) internal successors, (860), 664 states have internal predecessors, (860), 101 states have call successors, (101), 53 states have call predecessors, (101), 74 states have return successors, (136), 116 states have call predecessors, (136), 95 states have call successors, (136) [2022-04-06 13:36:46,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1097 transitions. [2022-04-06 13:36:46,261 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1097 transitions. Word has length 59 [2022-04-06 13:36:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:46,261 INFO L478 AbstractCegarLoop]: Abstraction has 827 states and 1097 transitions. [2022-04-06 13:36:46,261 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 13:36:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1097 transitions. [2022-04-06 13:36:46,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-06 13:36:46,262 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:46,262 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 13:36:46,262 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-04-06 13:36:46,262 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:46,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:46,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1192878684, now seen corresponding path program 1 times [2022-04-06 13:36:46,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:46,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861310060] [2022-04-06 13:36:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:46,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:36:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,415 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 13:36:46,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:46,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861310060] [2022-04-06 13:36:46,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861310060] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:46,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:46,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:46,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812069119] [2022-04-06 13:36:46,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:46,416 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:46,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:46,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:46,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:46,416 INFO L87 Difference]: Start difference. First operand 827 states and 1097 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 13:36:47,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:47,758 INFO L93 Difference]: Finished difference Result 1016 states and 1419 transitions. [2022-04-06 13:36:47,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:47,758 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 13:36:47,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:47,761 INFO L225 Difference]: With dead ends: 1016 [2022-04-06 13:36:47,761 INFO L226 Difference]: Without dead ends: 982 [2022-04-06 13:36:47,761 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 13:36:47,761 INFO L913 BasicCegarLoop]: 609 mSDtfsCounter, 938 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:47,762 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 1771 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:36:47,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-04-06 13:36:47,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 831. [2022-04-06 13:36:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 653 states have (on average 1.3200612557427258) internal successors, (862), 668 states have internal predecessors, (862), 101 states have call successors, (101), 53 states have call predecessors, (101), 76 states have return successors, (152), 116 states have call predecessors, (152), 95 states have call successors, (152) [2022-04-06 13:36:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1115 transitions. [2022-04-06 13:36:47,827 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1115 transitions. Word has length 61 [2022-04-06 13:36:47,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:47,827 INFO L478 AbstractCegarLoop]: Abstraction has 831 states and 1115 transitions. [2022-04-06 13:36:47,827 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 13:36:47,827 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1115 transitions. [2022-04-06 13:36:47,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 13:36:47,828 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:47,829 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 13:36:47,829 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-04-06 13:36:47,829 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:47,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:47,829 INFO L85 PathProgramCache]: Analyzing trace with hash 440130742, now seen corresponding path program 1 times [2022-04-06 13:36:47,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:47,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875048812] [2022-04-06 13:36:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:47,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:36:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,986 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 13:36:47,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:47,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875048812] [2022-04-06 13:36:47,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875048812] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:47,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:47,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:36:47,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48352944] [2022-04-06 13:36:47,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:47,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:36:47,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:47,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:36:47,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:36:47,987 INFO L87 Difference]: Start difference. First operand 831 states and 1115 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 13:36:49,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:49,590 INFO L93 Difference]: Finished difference Result 1006 states and 1400 transitions. [2022-04-06 13:36:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:36:49,590 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 13:36:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:49,592 INFO L225 Difference]: With dead ends: 1006 [2022-04-06 13:36:49,592 INFO L226 Difference]: Without dead ends: 974 [2022-04-06 13:36:49,593 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:49,593 INFO L913 BasicCegarLoop]: 607 mSDtfsCounter, 1205 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:49,593 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 1738 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:36:49,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-04-06 13:36:49,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 831. [2022-04-06 13:36:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 653 states have (on average 1.318529862174579) internal successors, (861), 668 states have internal predecessors, (861), 101 states have call successors, (101), 53 states have call predecessors, (101), 76 states have return successors, (152), 116 states have call predecessors, (152), 95 states have call successors, (152) [2022-04-06 13:36:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1114 transitions. [2022-04-06 13:36:49,658 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1114 transitions. Word has length 60 [2022-04-06 13:36:49,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:49,658 INFO L478 AbstractCegarLoop]: Abstraction has 831 states and 1114 transitions. [2022-04-06 13:36:49,658 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 13:36:49,658 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1114 transitions. [2022-04-06 13:36:49,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 13:36:49,659 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:49,659 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 13:36:49,659 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-04-06 13:36:49,659 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:49,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:49,660 INFO L85 PathProgramCache]: Analyzing trace with hash 185394197, now seen corresponding path program 1 times [2022-04-06 13:36:49,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:49,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287874804] [2022-04-06 13:36:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:49,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:36:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,883 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 13:36:49,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:49,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287874804] [2022-04-06 13:36:49,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287874804] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:49,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:49,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:36:49,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866146897] [2022-04-06 13:36:49,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:49,884 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:36:49,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:49,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:36:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:49,885 INFO L87 Difference]: Start difference. First operand 831 states and 1114 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 13:36:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:52,139 INFO L93 Difference]: Finished difference Result 1013 states and 1417 transitions. [2022-04-06 13:36:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:36:52,139 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 13:36:52,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:52,142 INFO L225 Difference]: With dead ends: 1013 [2022-04-06 13:36:52,142 INFO L226 Difference]: Without dead ends: 961 [2022-04-06 13:36:52,142 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 13:36:52,143 INFO L913 BasicCegarLoop]: 608 mSDtfsCounter, 364 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 4476 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 4624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 4476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:52,143 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2521 Invalid, 4624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 4476 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-06 13:36:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-04-06 13:36:52,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 823. [2022-04-06 13:36:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 647 states have (on average 1.3137557959814528) internal successors, (850), 662 states have internal predecessors, (850), 99 states have call successors, (99), 53 states have call predecessors, (99), 76 states have return successors, (150), 114 states have call predecessors, (150), 93 states have call successors, (150) [2022-04-06 13:36:52,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1099 transitions. [2022-04-06 13:36:52,230 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1099 transitions. Word has length 60 [2022-04-06 13:36:52,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:52,230 INFO L478 AbstractCegarLoop]: Abstraction has 823 states and 1099 transitions. [2022-04-06 13:36:52,230 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 13:36:52,230 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1099 transitions. [2022-04-06 13:36:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 13:36:52,231 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:52,231 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 13:36:52,232 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-04-06 13:36:52,232 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:52,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:52,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1536662915, now seen corresponding path program 1 times [2022-04-06 13:36:52,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:52,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813915537] [2022-04-06 13:36:52,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:52,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:36:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,553 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 13:36:52,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:52,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813915537] [2022-04-06 13:36:52,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813915537] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:52,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:52,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:36:52,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585221590] [2022-04-06 13:36:52,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:52,554 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:36:52,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:52,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:36:52,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:36:52,555 INFO L87 Difference]: Start difference. First operand 823 states and 1099 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 13:36:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:54,897 INFO L93 Difference]: Finished difference Result 978 states and 1360 transitions. [2022-04-06 13:36:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:36:54,898 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 13:36:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:54,900 INFO L225 Difference]: With dead ends: 978 [2022-04-06 13:36:54,900 INFO L226 Difference]: Without dead ends: 948 [2022-04-06 13:36:54,901 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 13:36:54,901 INFO L913 BasicCegarLoop]: 603 mSDtfsCounter, 1448 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 5235 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 5831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 5235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:54,901 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 3132 Invalid, 5831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 5235 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-06 13:36:54,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2022-04-06 13:36:54,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 812. [2022-04-06 13:36:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 639 states have (on average 1.3145539906103287) internal successors, (840), 654 states have internal predecessors, (840), 97 states have call successors, (97), 53 states have call predecessors, (97), 75 states have return successors, (147), 111 states have call predecessors, (147), 91 states have call successors, (147) [2022-04-06 13:36:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1084 transitions. [2022-04-06 13:36:54,976 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1084 transitions. Word has length 69 [2022-04-06 13:36:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:54,976 INFO L478 AbstractCegarLoop]: Abstraction has 812 states and 1084 transitions. [2022-04-06 13:36:54,976 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 13:36:54,976 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1084 transitions. [2022-04-06 13:36:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 13:36:54,977 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:54,977 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 13:36:54,977 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-06 13:36:54,977 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:54,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1158774888, now seen corresponding path program 1 times [2022-04-06 13:36:54,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:54,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541449776] [2022-04-06 13:36:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:54,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:36:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,213 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 13:36:55,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:55,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541449776] [2022-04-06 13:36:55,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541449776] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:55,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:55,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:36:55,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123675629] [2022-04-06 13:36:55,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:55,214 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:36:55,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:55,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:36:55,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:36:55,214 INFO L87 Difference]: Start difference. First operand 812 states and 1084 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 13:36:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:57,596 INFO L93 Difference]: Finished difference Result 965 states and 1341 transitions. [2022-04-06 13:36:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:36:57,596 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 13:36:57,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:57,598 INFO L225 Difference]: With dead ends: 965 [2022-04-06 13:36:57,598 INFO L226 Difference]: Without dead ends: 943 [2022-04-06 13:36:57,599 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 13:36:57,599 INFO L913 BasicCegarLoop]: 588 mSDtfsCounter, 577 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 6080 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 6315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 6080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:57,599 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 3241 Invalid, 6315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 6080 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-06 13:36:57,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-04-06 13:36:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 807. [2022-04-06 13:36:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 636 states have (on average 1.3144654088050314) internal successors, (836), 651 states have internal predecessors, (836), 96 states have call successors, (96), 53 states have call predecessors, (96), 74 states have return successors, (145), 109 states have call predecessors, (145), 90 states have call successors, (145) [2022-04-06 13:36:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1077 transitions. [2022-04-06 13:36:57,666 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1077 transitions. Word has length 63 [2022-04-06 13:36:57,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:57,666 INFO L478 AbstractCegarLoop]: Abstraction has 807 states and 1077 transitions. [2022-04-06 13:36:57,666 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 13:36:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1077 transitions. [2022-04-06 13:36:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 13:36:57,667 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:57,667 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] [2022-04-06 13:36:57,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-04-06 13:36:57,667 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:57,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:57,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1342281155, now seen corresponding path program 1 times [2022-04-06 13:36:57,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:57,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127817167] [2022-04-06 13:36:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:57,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:36:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,881 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 13:36:57,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:57,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127817167] [2022-04-06 13:36:57,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127817167] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:57,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:57,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:36:57,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172114797] [2022-04-06 13:36:57,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:57,882 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:36:57,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:57,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:36:57,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:36:57,883 INFO L87 Difference]: Start difference. First operand 807 states and 1077 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 13:36:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:59,827 INFO L93 Difference]: Finished difference Result 960 states and 1334 transitions. [2022-04-06 13:36:59,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:36:59,828 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 13:36:59,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:59,830 INFO L225 Difference]: With dead ends: 960 [2022-04-06 13:36:59,830 INFO L226 Difference]: Without dead ends: 938 [2022-04-06 13:36:59,830 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 13:36:59,831 INFO L913 BasicCegarLoop]: 581 mSDtfsCounter, 854 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 5060 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 5407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 5060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:59,831 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 3039 Invalid, 5407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 5060 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-06 13:36:59,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-04-06 13:36:59,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 802. [2022-04-06 13:36:59,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 633 states have (on average 1.3143759873617693) internal successors, (832), 648 states have internal predecessors, (832), 95 states have call successors, (95), 53 states have call predecessors, (95), 73 states have return successors, (143), 107 states have call predecessors, (143), 89 states have call successors, (143) [2022-04-06 13:36:59,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1070 transitions. [2022-04-06 13:36:59,896 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1070 transitions. Word has length 62 [2022-04-06 13:36:59,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:59,896 INFO L478 AbstractCegarLoop]: Abstraction has 802 states and 1070 transitions. [2022-04-06 13:36:59,896 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 13:36:59,897 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1070 transitions. [2022-04-06 13:36:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 13:36:59,898 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:59,898 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] [2022-04-06 13:36:59,898 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-04-06 13:36:59,898 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:59,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:59,898 INFO L85 PathProgramCache]: Analyzing trace with hash 739520085, now seen corresponding path program 1 times [2022-04-06 13:36:59,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:59,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906311699] [2022-04-06 13:36:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:59,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:59,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:59,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:59,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:00,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:37:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:00,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:00,124 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 13:37:00,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:00,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906311699] [2022-04-06 13:37:00,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906311699] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:00,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:00,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 13:37:00,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962492427] [2022-04-06 13:37:00,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:00,124 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 13:37:00,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:00,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 13:37:00,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:37:00,125 INFO L87 Difference]: Start difference. First operand 802 states and 1070 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 13:37:02,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:02,574 INFO L93 Difference]: Finished difference Result 960 states and 1332 transitions. [2022-04-06 13:37:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 13:37:02,574 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 13:37:02,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:02,576 INFO L225 Difference]: With dead ends: 960 [2022-04-06 13:37:02,576 INFO L226 Difference]: Without dead ends: 936 [2022-04-06 13:37:02,577 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 13:37:02,577 INFO L913 BasicCegarLoop]: 551 mSDtfsCounter, 592 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 5924 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 6167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 5924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:02,577 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 3084 Invalid, 6167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 5924 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-06 13:37:02,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-04-06 13:37:02,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 800. [2022-04-06 13:37:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 632 states have (on average 1.3132911392405062) internal successors, (830), 647 states have internal predecessors, (830), 94 states have call successors, (94), 53 states have call predecessors, (94), 73 states have return successors, (142), 106 states have call predecessors, (142), 88 states have call successors, (142) [2022-04-06 13:37:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1066 transitions. [2022-04-06 13:37:02,641 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1066 transitions. Word has length 63 [2022-04-06 13:37:02,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:02,641 INFO L478 AbstractCegarLoop]: Abstraction has 800 states and 1066 transitions. [2022-04-06 13:37:02,641 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 13:37:02,642 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1066 transitions. [2022-04-06 13:37:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 13:37:02,643 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:02,643 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 13:37:02,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-04-06 13:37:02,643 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:02,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:02,643 INFO L85 PathProgramCache]: Analyzing trace with hash -620638821, now seen corresponding path program 1 times [2022-04-06 13:37:02,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:02,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172924239] [2022-04-06 13:37:02,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:02,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:02,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:02,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172924239] [2022-04-06 13:37:02,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172924239] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:02,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:02,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:37:02,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709974346] [2022-04-06 13:37:02,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:02,755 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:37:02,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:02,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:37:02,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:37:02,756 INFO L87 Difference]: Start difference. First operand 800 states and 1066 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 13:37:03,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:03,707 INFO L93 Difference]: Finished difference Result 1150 states and 1562 transitions. [2022-04-06 13:37:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:37:03,707 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 13:37:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:03,709 INFO L225 Difference]: With dead ends: 1150 [2022-04-06 13:37:03,709 INFO L226 Difference]: Without dead ends: 797 [2022-04-06 13:37:03,711 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 13:37:03,711 INFO L913 BasicCegarLoop]: 511 mSDtfsCounter, 1131 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:03,711 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1133 Valid, 1090 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:37:03,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-04-06 13:37:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 692. [2022-04-06 13:37:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 547 states have (on average 1.3053016453382085) internal successors, (714), 561 states have internal predecessors, (714), 82 states have call successors, (82), 47 states have call predecessors, (82), 62 states have return successors, (101), 90 states have call predecessors, (101), 76 states have call successors, (101) [2022-04-06 13:37:03,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 897 transitions. [2022-04-06 13:37:03,769 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 897 transitions. Word has length 63 [2022-04-06 13:37:03,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:03,769 INFO L478 AbstractCegarLoop]: Abstraction has 692 states and 897 transitions. [2022-04-06 13:37:03,769 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 13:37:03,769 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 897 transitions. [2022-04-06 13:37:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 13:37:03,770 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:03,770 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 13:37:03,770 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-04-06 13:37:03,770 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:03,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:03,771 INFO L85 PathProgramCache]: Analyzing trace with hash -306718972, now seen corresponding path program 1 times [2022-04-06 13:37:03,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:03,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304126483] [2022-04-06 13:37:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:03,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 13:37:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,887 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 13:37:03,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:03,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304126483] [2022-04-06 13:37:03,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304126483] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:03,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:03,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:37:03,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424478457] [2022-04-06 13:37:03,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:03,888 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:37:03,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:03,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:37:03,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:37:03,888 INFO L87 Difference]: Start difference. First operand 692 states and 897 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 13:37:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:04,790 INFO L93 Difference]: Finished difference Result 882 states and 1167 transitions. [2022-04-06 13:37:04,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 13:37:04,790 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 13:37:04,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:04,792 INFO L225 Difference]: With dead ends: 882 [2022-04-06 13:37:04,792 INFO L226 Difference]: Without dead ends: 762 [2022-04-06 13:37:04,793 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 13:37:04,793 INFO L913 BasicCegarLoop]: 475 mSDtfsCounter, 667 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:04,793 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 919 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:37:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-04-06 13:37:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 692. [2022-04-06 13:37:04,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 547 states have (on average 1.3016453382084094) internal successors, (712), 561 states have internal predecessors, (712), 82 states have call successors, (82), 47 states have call predecessors, (82), 62 states have return successors, (101), 90 states have call predecessors, (101), 76 states have call successors, (101) [2022-04-06 13:37:04,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 895 transitions. [2022-04-06 13:37:04,851 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 895 transitions. Word has length 66 [2022-04-06 13:37:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:04,851 INFO L478 AbstractCegarLoop]: Abstraction has 692 states and 895 transitions. [2022-04-06 13:37:04,852 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 13:37:04,852 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 895 transitions. [2022-04-06 13:37:04,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 13:37:04,853 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:04,853 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 13:37:04,853 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-04-06 13:37:04,853 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:04,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:04,853 INFO L85 PathProgramCache]: Analyzing trace with hash 526937182, now seen corresponding path program 1 times [2022-04-06 13:37:04,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:04,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920628576] [2022-04-06 13:37:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:04,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:05,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:05,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:05,118 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 13:37:05,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:05,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920628576] [2022-04-06 13:37:05,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920628576] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:05,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:05,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 13:37:05,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004611239] [2022-04-06 13:37:05,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:05,119 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 13:37:05,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:05,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 13:37:05,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:05,119 INFO L87 Difference]: Start difference. First operand 692 states and 895 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 13:37:07,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:07,207 INFO L93 Difference]: Finished difference Result 786 states and 1032 transitions. [2022-04-06 13:37:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 13:37:07,208 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 13:37:07,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:07,209 INFO L225 Difference]: With dead ends: 786 [2022-04-06 13:37:07,210 INFO L226 Difference]: Without dead ends: 761 [2022-04-06 13:37:07,210 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 13:37:07,210 INFO L913 BasicCegarLoop]: 507 mSDtfsCounter, 886 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 5455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:07,210 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 2746 Invalid, 5455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-06 13:37:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-04-06 13:37:07,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 690. [2022-04-06 13:37:07,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 546 states have (on average 1.3003663003663004) internal successors, (710), 560 states have internal predecessors, (710), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-04-06 13:37:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 891 transitions. [2022-04-06 13:37:07,269 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 891 transitions. Word has length 67 [2022-04-06 13:37:07,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:07,269 INFO L478 AbstractCegarLoop]: Abstraction has 690 states and 891 transitions. [2022-04-06 13:37:07,269 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 13:37:07,269 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 891 transitions. [2022-04-06 13:37:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 13:37:07,270 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:07,270 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 13:37:07,270 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-04-06 13:37:07,271 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:07,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:07,271 INFO L85 PathProgramCache]: Analyzing trace with hash 459314479, now seen corresponding path program 1 times [2022-04-06 13:37:07,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:07,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243081558] [2022-04-06 13:37:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:07,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:37:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,520 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 13:37:07,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:07,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243081558] [2022-04-06 13:37:07,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243081558] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:07,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:07,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 13:37:07,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408002767] [2022-04-06 13:37:07,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:07,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 13:37:07,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:07,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 13:37:07,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:07,523 INFO L87 Difference]: Start difference. First operand 690 states and 891 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 13:37:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:09,746 INFO L93 Difference]: Finished difference Result 781 states and 1023 transitions. [2022-04-06 13:37:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 13:37:09,747 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 13:37:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:09,748 INFO L225 Difference]: With dead ends: 781 [2022-04-06 13:37:09,748 INFO L226 Difference]: Without dead ends: 756 [2022-04-06 13:37:09,749 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 13:37:09,749 INFO L913 BasicCegarLoop]: 485 mSDtfsCounter, 1391 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 5011 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 5534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 5011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:09,750 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 2462 Invalid, 5534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 5011 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 13:37:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-04-06 13:37:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 688. [2022-04-06 13:37:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 545 states have (on average 1.2990825688073395) internal successors, (708), 559 states have internal predecessors, (708), 80 states have call successors, (80), 47 states have call predecessors, (80), 62 states have return successors, (99), 88 states have call predecessors, (99), 74 states have call successors, (99) [2022-04-06 13:37:09,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 887 transitions. [2022-04-06 13:37:09,807 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 887 transitions. Word has length 66 [2022-04-06 13:37:09,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:09,823 INFO L478 AbstractCegarLoop]: Abstraction has 688 states and 887 transitions. [2022-04-06 13:37:09,823 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 13:37:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 887 transitions. [2022-04-06 13:37:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-06 13:37:09,824 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:09,825 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 13:37:09,825 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-04-06 13:37:09,825 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:09,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:09,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1659747958, now seen corresponding path program 1 times [2022-04-06 13:37:09,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:09,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246891356] [2022-04-06 13:37:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:09,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:09,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:09,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:09,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:09,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,007 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 13:37:10,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:10,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246891356] [2022-04-06 13:37:10,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246891356] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:10,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:10,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:10,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555581677] [2022-04-06 13:37:10,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:10,008 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:10,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:10,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:10,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:10,008 INFO L87 Difference]: Start difference. First operand 688 states and 887 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 13:37:11,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:11,405 INFO L93 Difference]: Finished difference Result 820 states and 1069 transitions. [2022-04-06 13:37:11,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 13:37:11,406 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 13:37:11,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:11,407 INFO L225 Difference]: With dead ends: 820 [2022-04-06 13:37:11,408 INFO L226 Difference]: Without dead ends: 787 [2022-04-06 13:37:11,408 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 13:37:11,408 INFO L913 BasicCegarLoop]: 486 mSDtfsCounter, 738 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:11,408 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 1169 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:37:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-04-06 13:37:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 694. [2022-04-06 13:37:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.298181818181818) internal successors, (714), 564 states have internal predecessors, (714), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-04-06 13:37:11,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 895 transitions. [2022-04-06 13:37:11,468 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 895 transitions. Word has length 65 [2022-04-06 13:37:11,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:11,469 INFO L478 AbstractCegarLoop]: Abstraction has 694 states and 895 transitions. [2022-04-06 13:37:11,469 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 13:37:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 895 transitions. [2022-04-06 13:37:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 13:37:11,470 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:11,470 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 13:37:11,470 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-04-06 13:37:11,470 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:11,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash -697612646, now seen corresponding path program 1 times [2022-04-06 13:37:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:11,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889548998] [2022-04-06 13:37:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:11,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 13:37:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:11,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:11,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889548998] [2022-04-06 13:37:11,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889548998] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:11,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:11,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:11,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395272436] [2022-04-06 13:37:11,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:11,641 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:11,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:11,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:11,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:11,641 INFO L87 Difference]: Start difference. First operand 694 states and 895 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 13:37:12,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:12,796 INFO L93 Difference]: Finished difference Result 818 states and 1062 transitions. [2022-04-06 13:37:12,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:37:12,797 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 13:37:12,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:12,798 INFO L225 Difference]: With dead ends: 818 [2022-04-06 13:37:12,799 INFO L226 Difference]: Without dead ends: 764 [2022-04-06 13:37:12,799 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:12,799 INFO L913 BasicCegarLoop]: 492 mSDtfsCounter, 1382 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:12,799 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1384 Valid, 1266 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:37:12,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-04-06 13:37:12,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 694. [2022-04-06 13:37:12,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.2945454545454544) internal successors, (712), 564 states have internal predecessors, (712), 81 states have call successors, (81), 47 states have call predecessors, (81), 62 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-04-06 13:37:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 893 transitions. [2022-04-06 13:37:12,867 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 893 transitions. Word has length 66 [2022-04-06 13:37:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:12,867 INFO L478 AbstractCegarLoop]: Abstraction has 694 states and 893 transitions. [2022-04-06 13:37:12,867 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 13:37:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 893 transitions. [2022-04-06 13:37:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 13:37:12,868 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:12,868 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 13:37:12,868 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-04-06 13:37:12,868 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:12,869 INFO L85 PathProgramCache]: Analyzing trace with hash -346812709, now seen corresponding path program 1 times [2022-04-06 13:37:12,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:12,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765089334] [2022-04-06 13:37:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:12,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 13:37:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,045 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 13:37:13,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:13,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765089334] [2022-04-06 13:37:13,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765089334] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:13,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:13,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:37:13,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828528354] [2022-04-06 13:37:13,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:13,046 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:37:13,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:13,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:37:13,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:13,047 INFO L87 Difference]: Start difference. First operand 694 states and 893 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 13:37:14,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:14,747 INFO L93 Difference]: Finished difference Result 789 states and 1029 transitions. [2022-04-06 13:37:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:37:14,747 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 13:37:14,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:14,749 INFO L225 Difference]: With dead ends: 789 [2022-04-06 13:37:14,749 INFO L226 Difference]: Without dead ends: 712 [2022-04-06 13:37:14,749 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 13:37:14,750 INFO L913 BasicCegarLoop]: 499 mSDtfsCounter, 1151 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 3591 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 4025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 3591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:14,750 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1156 Valid, 2078 Invalid, 4025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 3591 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 13:37:14,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-04-06 13:37:14,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 657. [2022-04-06 13:37:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 520 states have (on average 1.2807692307692307) internal successors, (666), 534 states have internal predecessors, (666), 74 states have call successors, (74), 47 states have call predecessors, (74), 62 states have return successors, (92), 82 states have call predecessors, (92), 68 states have call successors, (92) [2022-04-06 13:37:14,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 832 transitions. [2022-04-06 13:37:14,804 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 832 transitions. Word has length 66 [2022-04-06 13:37:14,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:14,804 INFO L478 AbstractCegarLoop]: Abstraction has 657 states and 832 transitions. [2022-04-06 13:37:14,804 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 13:37:14,804 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 832 transitions. [2022-04-06 13:37:14,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 13:37:14,805 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:14,805 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 13:37:14,805 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-04-06 13:37:14,805 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:14,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:14,806 INFO L85 PathProgramCache]: Analyzing trace with hash 255041077, now seen corresponding path program 1 times [2022-04-06 13:37:14,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:14,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931529228] [2022-04-06 13:37:14,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:14,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,940 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 13:37:14,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:14,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931529228] [2022-04-06 13:37:14,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931529228] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:14,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:14,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:37:14,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933110299] [2022-04-06 13:37:14,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:14,941 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:37:14,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:14,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:37:14,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:37:14,941 INFO L87 Difference]: Start difference. First operand 657 states and 832 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 13:37:16,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:16,106 INFO L93 Difference]: Finished difference Result 841 states and 1078 transitions. [2022-04-06 13:37:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:37:16,106 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 13:37:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:16,108 INFO L225 Difference]: With dead ends: 841 [2022-04-06 13:37:16,108 INFO L226 Difference]: Without dead ends: 829 [2022-04-06 13:37:16,109 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:16,109 INFO L913 BasicCegarLoop]: 464 mSDtfsCounter, 479 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:16,109 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 909 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:37:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-04-06 13:37:16,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 703. [2022-04-06 13:37:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 556 states have (on average 1.2733812949640289) internal successors, (708), 572 states have internal predecessors, (708), 76 states have call successors, (76), 49 states have call predecessors, (76), 70 states have return successors, (100), 90 states have call predecessors, (100), 70 states have call successors, (100) [2022-04-06 13:37:16,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 884 transitions. [2022-04-06 13:37:16,167 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 884 transitions. Word has length 67 [2022-04-06 13:37:16,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:16,167 INFO L478 AbstractCegarLoop]: Abstraction has 703 states and 884 transitions. [2022-04-06 13:37:16,167 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 13:37:16,167 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 884 transitions. [2022-04-06 13:37:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 13:37:16,168 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:16,168 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 13:37:16,168 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-04-06 13:37:16,169 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:16,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:16,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2058592464, now seen corresponding path program 1 times [2022-04-06 13:37:16,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:16,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469531168] [2022-04-06 13:37:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:16,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 13:37:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,312 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 13:37:16,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:16,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469531168] [2022-04-06 13:37:16,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469531168] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:16,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:16,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:16,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202480239] [2022-04-06 13:37:16,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:16,313 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:16,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:16,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:16,313 INFO L87 Difference]: Start difference. First operand 703 states and 884 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 13:37:17,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:17,367 INFO L93 Difference]: Finished difference Result 786 states and 995 transitions. [2022-04-06 13:37:17,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:17,368 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 13:37:17,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:17,369 INFO L225 Difference]: With dead ends: 786 [2022-04-06 13:37:17,369 INFO L226 Difference]: Without dead ends: 747 [2022-04-06 13:37:17,370 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 13:37:17,370 INFO L913 BasicCegarLoop]: 439 mSDtfsCounter, 950 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:17,370 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 1218 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:37:17,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-04-06 13:37:17,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 698. [2022-04-06 13:37:17,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 552 states have (on average 1.2735507246376812) internal successors, (703), 568 states have internal predecessors, (703), 75 states have call successors, (75), 49 states have call predecessors, (75), 70 states have return successors, (99), 89 states have call predecessors, (99), 69 states have call successors, (99) [2022-04-06 13:37:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 877 transitions. [2022-04-06 13:37:17,436 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 877 transitions. Word has length 67 [2022-04-06 13:37:17,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:17,436 INFO L478 AbstractCegarLoop]: Abstraction has 698 states and 877 transitions. [2022-04-06 13:37:17,436 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 13:37:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 877 transitions. [2022-04-06 13:37:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 13:37:17,437 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:17,437 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 13:37:17,437 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-04-06 13:37:17,437 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash -238065346, now seen corresponding path program 1 times [2022-04-06 13:37:17,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:17,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695159223] [2022-04-06 13:37:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:17,563 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 13:37:17,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:17,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695159223] [2022-04-06 13:37:17,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695159223] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:17,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:17,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:37:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053893268] [2022-04-06 13:37:17,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:17,565 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:37:17,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:17,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:37:17,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:37:17,565 INFO L87 Difference]: Start difference. First operand 698 states and 877 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 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 13:37:18,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:18,413 INFO L93 Difference]: Finished difference Result 778 states and 992 transitions. [2022-04-06 13:37:18,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:37:18,413 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 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 68 [2022-04-06 13:37:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:18,415 INFO L225 Difference]: With dead ends: 778 [2022-04-06 13:37:18,415 INFO L226 Difference]: Without dead ends: 733 [2022-04-06 13:37:18,415 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:18,417 INFO L913 BasicCegarLoop]: 453 mSDtfsCounter, 1307 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:18,417 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1323 Valid, 830 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:37:18,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-04-06 13:37:18,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 679. [2022-04-06 13:37:18,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.2639405204460967) internal successors, (680), 553 states have internal predecessors, (680), 74 states have call successors, (74), 48 states have call predecessors, (74), 66 states have return successors, (95), 85 states have call predecessors, (95), 68 states have call successors, (95) [2022-04-06 13:37:18,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 849 transitions. [2022-04-06 13:37:18,482 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 849 transitions. Word has length 68 [2022-04-06 13:37:18,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:18,482 INFO L478 AbstractCegarLoop]: Abstraction has 679 states and 849 transitions. [2022-04-06 13:37:18,482 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 3 states have internal predecessors, (52), 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 13:37:18,482 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 849 transitions. [2022-04-06 13:37:18,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 13:37:18,483 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:18,483 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 13:37:18,483 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-04-06 13:37:18,483 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:18,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:18,484 INFO L85 PathProgramCache]: Analyzing trace with hash -653091009, now seen corresponding path program 1 times [2022-04-06 13:37:18,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:18,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278759720] [2022-04-06 13:37:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:18,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,661 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 13:37:18,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:18,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278759720] [2022-04-06 13:37:18,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278759720] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:18,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:18,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:18,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784646403] [2022-04-06 13:37:18,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:18,662 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:18,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:18,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:18,662 INFO L87 Difference]: Start difference. First operand 679 states and 849 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 13:37:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:19,983 INFO L93 Difference]: Finished difference Result 812 states and 1032 transitions. [2022-04-06 13:37:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:37:19,984 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 13:37:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:19,986 INFO L225 Difference]: With dead ends: 812 [2022-04-06 13:37:19,986 INFO L226 Difference]: Without dead ends: 803 [2022-04-06 13:37:19,986 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 13:37:19,986 INFO L913 BasicCegarLoop]: 455 mSDtfsCounter, 1020 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:19,986 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 878 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:37:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-04-06 13:37:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 679. [2022-04-06 13:37:20,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.2602230483271375) internal successors, (678), 553 states have internal predecessors, (678), 74 states have call successors, (74), 48 states have call predecessors, (74), 66 states have return successors, (95), 85 states have call predecessors, (95), 68 states have call successors, (95) [2022-04-06 13:37:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 847 transitions. [2022-04-06 13:37:20,049 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 847 transitions. Word has length 68 [2022-04-06 13:37:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:20,050 INFO L478 AbstractCegarLoop]: Abstraction has 679 states and 847 transitions. [2022-04-06 13:37:20,050 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 13:37:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 847 transitions. [2022-04-06 13:37:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-06 13:37:20,051 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:20,051 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 13:37:20,051 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-04-06 13:37:20,051 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:20,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:20,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1034853120, now seen corresponding path program 1 times [2022-04-06 13:37:20,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:20,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683202388] [2022-04-06 13:37:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:20,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:37:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:37:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,297 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 13:37:20,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:20,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683202388] [2022-04-06 13:37:20,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683202388] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:20,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:20,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 13:37:20,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499504020] [2022-04-06 13:37:20,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:20,298 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 13:37:20,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:20,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 13:37:20,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:20,298 INFO L87 Difference]: Start difference. First operand 679 states and 847 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 13:37:22,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:22,274 INFO L93 Difference]: Finished difference Result 768 states and 974 transitions. [2022-04-06 13:37:22,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 13:37:22,274 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 13:37:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:22,278 INFO L225 Difference]: With dead ends: 768 [2022-04-06 13:37:22,278 INFO L226 Difference]: Without dead ends: 743 [2022-04-06 13:37:22,279 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 13:37:22,279 INFO L913 BasicCegarLoop]: 446 mSDtfsCounter, 765 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 4385 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 4671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 4385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:22,279 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 2589 Invalid, 4671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 4385 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 13:37:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-04-06 13:37:22,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 677. [2022-04-06 13:37:22,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 537 states have (on average 1.2588454376163873) internal successors, (676), 552 states have internal predecessors, (676), 73 states have call successors, (73), 48 states have call predecessors, (73), 66 states have return successors, (94), 84 states have call predecessors, (94), 67 states have call successors, (94) [2022-04-06 13:37:22,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 843 transitions. [2022-04-06 13:37:22,351 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 843 transitions. Word has length 74 [2022-04-06 13:37:22,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:22,351 INFO L478 AbstractCegarLoop]: Abstraction has 677 states and 843 transitions. [2022-04-06 13:37:22,351 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 13:37:22,351 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 843 transitions. [2022-04-06 13:37:22,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-06 13:37:22,352 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:22,352 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 13:37:22,352 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-04-06 13:37:22,352 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash -8057471, now seen corresponding path program 1 times [2022-04-06 13:37:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:22,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589180989] [2022-04-06 13:37:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:22,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:37:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:37:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,631 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 13:37:22,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:22,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589180989] [2022-04-06 13:37:22,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589180989] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:22,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:22,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-06 13:37:22,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791247426] [2022-04-06 13:37:22,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:22,632 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-06 13:37:22,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:22,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-06 13:37:22,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-04-06 13:37:22,633 INFO L87 Difference]: Start difference. First operand 677 states and 843 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 13:37:24,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:24,742 INFO L93 Difference]: Finished difference Result 749 states and 942 transitions. [2022-04-06 13:37:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-06 13:37:24,742 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 13:37:24,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:24,744 INFO L225 Difference]: With dead ends: 749 [2022-04-06 13:37:24,744 INFO L226 Difference]: Without dead ends: 721 [2022-04-06 13:37:24,744 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 13:37:24,744 INFO L913 BasicCegarLoop]: 438 mSDtfsCounter, 733 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 5042 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 5317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 5042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:24,745 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 2776 Invalid, 5317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 5042 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 13:37:24,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-04-06 13:37:24,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 673. [2022-04-06 13:37:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 534 states have (on average 1.2584269662921348) internal successors, (672), 549 states have internal predecessors, (672), 72 states have call successors, (72), 48 states have call predecessors, (72), 66 states have return successors, (93), 83 states have call predecessors, (93), 66 states have call successors, (93) [2022-04-06 13:37:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 837 transitions. [2022-04-06 13:37:24,806 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 837 transitions. Word has length 70 [2022-04-06 13:37:24,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:24,806 INFO L478 AbstractCegarLoop]: Abstraction has 673 states and 837 transitions. [2022-04-06 13:37:24,806 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 13:37:24,806 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 837 transitions. [2022-04-06 13:37:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 13:37:24,807 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:24,807 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 13:37:24,807 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-04-06 13:37:24,808 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:24,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:24,808 INFO L85 PathProgramCache]: Analyzing trace with hash 300413188, now seen corresponding path program 1 times [2022-04-06 13:37:24,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:24,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947290146] [2022-04-06 13:37:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:24,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,965 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 13:37:24,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:24,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947290146] [2022-04-06 13:37:24,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947290146] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:24,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:24,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:24,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009171651] [2022-04-06 13:37:24,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:24,966 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:24,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:24,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:24,967 INFO L87 Difference]: Start difference. First operand 673 states and 837 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 13:37:26,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:26,491 INFO L93 Difference]: Finished difference Result 800 states and 1011 transitions. [2022-04-06 13:37:26,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:37:26,492 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 13:37:26,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:26,493 INFO L225 Difference]: With dead ends: 800 [2022-04-06 13:37:26,493 INFO L226 Difference]: Without dead ends: 796 [2022-04-06 13:37:26,493 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-04-06 13:37:26,494 INFO L913 BasicCegarLoop]: 446 mSDtfsCounter, 1448 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:26,494 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 944 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:37:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-04-06 13:37:26,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 671. [2022-04-06 13:37:26,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 532 states have (on average 1.2575187969924813) internal successors, (669), 547 states have internal predecessors, (669), 72 states have call successors, (72), 48 states have call predecessors, (72), 66 states have return successors, (93), 83 states have call predecessors, (93), 66 states have call successors, (93) [2022-04-06 13:37:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 834 transitions. [2022-04-06 13:37:26,553 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 834 transitions. Word has length 69 [2022-04-06 13:37:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:26,554 INFO L478 AbstractCegarLoop]: Abstraction has 671 states and 834 transitions. [2022-04-06 13:37:26,554 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 13:37:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 834 transitions. [2022-04-06 13:37:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 13:37:26,555 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:26,555 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 13:37:26,555 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-04-06 13:37:26,555 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:26,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:26,555 INFO L85 PathProgramCache]: Analyzing trace with hash 300444932, now seen corresponding path program 1 times [2022-04-06 13:37:26,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:26,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88458049] [2022-04-06 13:37:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:26,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,768 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 13:37:26,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:26,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88458049] [2022-04-06 13:37:26,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88458049] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:26,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:26,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 13:37:26,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319196662] [2022-04-06 13:37:26,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:26,770 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 13:37:26,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:26,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 13:37:26,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:37:26,770 INFO L87 Difference]: Start difference. First operand 671 states and 834 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 13:37:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:28,313 INFO L93 Difference]: Finished difference Result 729 states and 916 transitions. [2022-04-06 13:37:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-06 13:37:28,314 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 13:37:28,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:28,315 INFO L225 Difference]: With dead ends: 729 [2022-04-06 13:37:28,315 INFO L226 Difference]: Without dead ends: 694 [2022-04-06 13:37:28,315 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 13:37:28,316 INFO L913 BasicCegarLoop]: 387 mSDtfsCounter, 593 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 3627 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 3834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:28,316 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1583 Invalid, 3834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 3627 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 13:37:28,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-04-06 13:37:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 642. [2022-04-06 13:37:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 508 states have (on average 1.2539370078740157) internal successors, (637), 522 states have internal predecessors, (637), 71 states have call successors, (71), 47 states have call predecessors, (71), 62 states have return successors, (89), 79 states have call predecessors, (89), 65 states have call successors, (89) [2022-04-06 13:37:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 797 transitions. [2022-04-06 13:37:28,373 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 797 transitions. Word has length 69 [2022-04-06 13:37:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:28,373 INFO L478 AbstractCegarLoop]: Abstraction has 642 states and 797 transitions. [2022-04-06 13:37:28,373 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 13:37:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 797 transitions. [2022-04-06 13:37:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 13:37:28,374 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:28,374 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 13:37:28,374 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-04-06 13:37:28,374 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:28,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:28,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1365836196, now seen corresponding path program 1 times [2022-04-06 13:37:28,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:28,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814843991] [2022-04-06 13:37:28,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:28,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,515 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 13:37:28,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:28,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814843991] [2022-04-06 13:37:28,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814843991] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:28,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:28,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:28,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592224265] [2022-04-06 13:37:28,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:28,516 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:28,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:28,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:28,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:28,516 INFO L87 Difference]: Start difference. First operand 642 states and 797 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 13:37:29,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:29,440 INFO L93 Difference]: Finished difference Result 724 states and 905 transitions. [2022-04-06 13:37:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:29,440 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 13:37:29,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:29,441 INFO L225 Difference]: With dead ends: 724 [2022-04-06 13:37:29,441 INFO L226 Difference]: Without dead ends: 685 [2022-04-06 13:37:29,442 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 13:37:29,442 INFO L913 BasicCegarLoop]: 423 mSDtfsCounter, 906 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:29,442 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1169 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:37:29,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-04-06 13:37:29,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 637. [2022-04-06 13:37:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 504 states have (on average 1.253968253968254) internal successors, (632), 518 states have internal predecessors, (632), 70 states have call successors, (70), 47 states have call predecessors, (70), 62 states have return successors, (88), 78 states have call predecessors, (88), 64 states have call successors, (88) [2022-04-06 13:37:29,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 790 transitions. [2022-04-06 13:37:29,501 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 790 transitions. Word has length 69 [2022-04-06 13:37:29,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:29,501 INFO L478 AbstractCegarLoop]: Abstraction has 637 states and 790 transitions. [2022-04-06 13:37:29,501 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 13:37:29,501 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 790 transitions. [2022-04-06 13:37:29,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 13:37:29,502 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:29,502 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 13:37:29,502 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-04-06 13:37:29,502 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:29,502 INFO L85 PathProgramCache]: Analyzing trace with hash -415492251, now seen corresponding path program 1 times [2022-04-06 13:37:29,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:29,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960161579] [2022-04-06 13:37:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:29,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 13:37:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,716 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 13:37:29,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:29,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960161579] [2022-04-06 13:37:29,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960161579] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:29,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:29,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 13:37:29,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983537843] [2022-04-06 13:37:29,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:29,718 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 13:37:29,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 13:37:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:37:29,718 INFO L87 Difference]: Start difference. First operand 637 states and 790 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 13:37:31,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:31,303 INFO L93 Difference]: Finished difference Result 712 states and 893 transitions. [2022-04-06 13:37:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 13:37:31,303 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 13:37:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:31,304 INFO L225 Difference]: With dead ends: 712 [2022-04-06 13:37:31,304 INFO L226 Difference]: Without dead ends: 682 [2022-04-06 13:37:31,305 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 13:37:31,305 INFO L913 BasicCegarLoop]: 438 mSDtfsCounter, 699 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 3660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:31,305 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 2084 Invalid, 3660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 13:37:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-04-06 13:37:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 634. [2022-04-06 13:37:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 502 states have (on average 1.252988047808765) internal successors, (629), 516 states have internal predecessors, (629), 69 states have call successors, (69), 47 states have call predecessors, (69), 62 states have return successors, (87), 77 states have call predecessors, (87), 63 states have call successors, (87) [2022-04-06 13:37:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 785 transitions. [2022-04-06 13:37:31,362 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 785 transitions. Word has length 69 [2022-04-06 13:37:31,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:31,362 INFO L478 AbstractCegarLoop]: Abstraction has 634 states and 785 transitions. [2022-04-06 13:37:31,362 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 13:37:31,362 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 785 transitions. [2022-04-06 13:37:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 13:37:31,363 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:31,363 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 13:37:31,363 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-04-06 13:37:31,363 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:31,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash 135714178, now seen corresponding path program 1 times [2022-04-06 13:37:31,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:31,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122557511] [2022-04-06 13:37:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:31,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:37:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,535 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 13:37:31,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:31,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122557511] [2022-04-06 13:37:31,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122557511] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:31,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:31,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:31,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118914883] [2022-04-06 13:37:31,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:31,536 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:31,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:31,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:31,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:31,536 INFO L87 Difference]: Start difference. First operand 634 states and 785 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 13:37:32,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:32,436 INFO L93 Difference]: Finished difference Result 724 states and 902 transitions. [2022-04-06 13:37:32,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:37:32,437 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 13:37:32,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:32,438 INFO L225 Difference]: With dead ends: 724 [2022-04-06 13:37:32,438 INFO L226 Difference]: Without dead ends: 686 [2022-04-06 13:37:32,438 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 13:37:32,438 INFO L913 BasicCegarLoop]: 413 mSDtfsCounter, 1142 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:32,438 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 1019 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:37:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-04-06 13:37:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 634. [2022-04-06 13:37:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 502 states have (on average 1.250996015936255) internal successors, (628), 516 states have internal predecessors, (628), 69 states have call successors, (69), 47 states have call predecessors, (69), 62 states have return successors, (87), 77 states have call predecessors, (87), 63 states have call successors, (87) [2022-04-06 13:37:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 784 transitions. [2022-04-06 13:37:32,496 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 784 transitions. Word has length 71 [2022-04-06 13:37:32,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:32,497 INFO L478 AbstractCegarLoop]: Abstraction has 634 states and 784 transitions. [2022-04-06 13:37:32,497 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 13:37:32,497 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 784 transitions. [2022-04-06 13:37:32,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 13:37:32,498 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:32,498 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 13:37:32,498 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-04-06 13:37:32,498 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:32,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:32,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1161206177, now seen corresponding path program 1 times [2022-04-06 13:37:32,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:32,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997365210] [2022-04-06 13:37:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:32,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:37:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,751 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 13:37:32,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:32,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997365210] [2022-04-06 13:37:32,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997365210] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:32,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:32,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 13:37:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36458418] [2022-04-06 13:37:32,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:32,752 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 13:37:32,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 13:37:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:32,752 INFO L87 Difference]: Start difference. First operand 634 states and 784 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 13:37:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:34,537 INFO L93 Difference]: Finished difference Result 722 states and 908 transitions. [2022-04-06 13:37:34,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 13:37:34,537 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 13:37:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:34,538 INFO L225 Difference]: With dead ends: 722 [2022-04-06 13:37:34,538 INFO L226 Difference]: Without dead ends: 684 [2022-04-06 13:37:34,539 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 13:37:34,539 INFO L913 BasicCegarLoop]: 422 mSDtfsCounter, 723 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 4179 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 2441 SdHoareTripleChecker+Invalid, 4450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 4179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:34,539 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 2441 Invalid, 4450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 4179 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 13:37:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-04-06 13:37:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 629. [2022-04-06 13:37:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 498 states have (on average 1.2469879518072289) internal successors, (621), 512 states have internal predecessors, (621), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-04-06 13:37:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 774 transitions. [2022-04-06 13:37:34,607 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 774 transitions. Word has length 71 [2022-04-06 13:37:34,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:34,607 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 774 transitions. [2022-04-06 13:37:34,607 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 13:37:34,607 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 774 transitions. [2022-04-06 13:37:34,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 13:37:34,608 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:34,608 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 13:37:34,608 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-04-06 13:37:34,608 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:34,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:34,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1109131485, now seen corresponding path program 1 times [2022-04-06 13:37:34,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:34,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973568812] [2022-04-06 13:37:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:34,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:37:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 13:37:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:34,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:34,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973568812] [2022-04-06 13:37:34,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973568812] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:34,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:34,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:34,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102293748] [2022-04-06 13:37:34,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:34,776 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:34,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:34,776 INFO L87 Difference]: Start difference. First operand 629 states and 774 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 13:37:35,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:35,876 INFO L93 Difference]: Finished difference Result 717 states and 888 transitions. [2022-04-06 13:37:35,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:35,876 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 13:37:35,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:35,877 INFO L225 Difference]: With dead ends: 717 [2022-04-06 13:37:35,877 INFO L226 Difference]: Without dead ends: 673 [2022-04-06 13:37:35,877 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 13:37:35,878 INFO L913 BasicCegarLoop]: 402 mSDtfsCounter, 257 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:35,878 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 1320 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:37:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-04-06 13:37:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 623. [2022-04-06 13:37:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 493 states have (on average 1.2474645030425964) internal successors, (615), 507 states have internal predecessors, (615), 67 states have call successors, (67), 47 states have call predecessors, (67), 62 states have return successors, (84), 75 states have call predecessors, (84), 61 states have call successors, (84) [2022-04-06 13:37:35,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 766 transitions. [2022-04-06 13:37:35,936 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 766 transitions. Word has length 71 [2022-04-06 13:37:35,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:35,936 INFO L478 AbstractCegarLoop]: Abstraction has 623 states and 766 transitions. [2022-04-06 13:37:35,936 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 13:37:35,936 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 766 transitions. [2022-04-06 13:37:35,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 13:37:35,937 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:35,937 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 13:37:35,937 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-04-06 13:37:35,937 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:35,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:35,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1256769401, now seen corresponding path program 1 times [2022-04-06 13:37:35,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:35,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460945133] [2022-04-06 13:37:35,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:35,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,172 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 13:37:36,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:36,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460945133] [2022-04-06 13:37:36,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460945133] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:36,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:36,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 13:37:36,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532003164] [2022-04-06 13:37:36,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:36,173 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 13:37:36,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 13:37:36,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:37:36,173 INFO L87 Difference]: Start difference. First operand 623 states and 766 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 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 13:37:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:37,893 INFO L93 Difference]: Finished difference Result 854 states and 1053 transitions. [2022-04-06 13:37:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-06 13:37:37,894 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 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 71 [2022-04-06 13:37:37,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:37,895 INFO L225 Difference]: With dead ends: 854 [2022-04-06 13:37:37,895 INFO L226 Difference]: Without dead ends: 715 [2022-04-06 13:37:37,896 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-04-06 13:37:37,896 INFO L913 BasicCegarLoop]: 373 mSDtfsCounter, 956 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3701 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 4045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 3701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:37,896 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 1903 Invalid, 4045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 3701 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:37:37,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-04-06 13:37:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 629. [2022-04-06 13:37:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 499 states have (on average 1.2364729458917836) internal successors, (617), 513 states have internal predecessors, (617), 67 states have call successors, (67), 47 states have call predecessors, (67), 62 states have return successors, (84), 75 states have call predecessors, (84), 61 states have call successors, (84) [2022-04-06 13:37:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 768 transitions. [2022-04-06 13:37:37,956 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 768 transitions. Word has length 71 [2022-04-06 13:37:37,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:37,956 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 768 transitions. [2022-04-06 13:37:37,956 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 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 13:37:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 768 transitions. [2022-04-06 13:37:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 13:37:37,957 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:37,957 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 13:37:37,957 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-04-06 13:37:37,957 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:37,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:37,958 INFO L85 PathProgramCache]: Analyzing trace with hash 958622839, now seen corresponding path program 1 times [2022-04-06 13:37:37,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:37,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467798377] [2022-04-06 13:37:37,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:37,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,135 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 13:37:38,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:38,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467798377] [2022-04-06 13:37:38,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467798377] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:38,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:38,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:38,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290857667] [2022-04-06 13:37:38,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:38,135 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:38,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:38,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:38,136 INFO L87 Difference]: Start difference. First operand 629 states and 768 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 13:37:38,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:38,979 INFO L93 Difference]: Finished difference Result 717 states and 882 transitions. [2022-04-06 13:37:38,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:37:38,979 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 13:37:38,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:38,981 INFO L225 Difference]: With dead ends: 717 [2022-04-06 13:37:38,981 INFO L226 Difference]: Without dead ends: 667 [2022-04-06 13:37:38,981 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 13:37:38,981 INFO L913 BasicCegarLoop]: 393 mSDtfsCounter, 658 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:38,982 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 999 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-04-06 13:37:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 617. [2022-04-06 13:37:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 488 states have (on average 1.2315573770491803) internal successors, (601), 502 states have internal predecessors, (601), 66 states have call successors, (66), 47 states have call predecessors, (66), 62 states have return successors, (83), 74 states have call predecessors, (83), 60 states have call successors, (83) [2022-04-06 13:37:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 750 transitions. [2022-04-06 13:37:39,042 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 750 transitions. Word has length 73 [2022-04-06 13:37:39,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:39,042 INFO L478 AbstractCegarLoop]: Abstraction has 617 states and 750 transitions. [2022-04-06 13:37:39,042 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 13:37:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 750 transitions. [2022-04-06 13:37:39,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 13:37:39,043 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:39,043 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:37:39,043 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-04-06 13:37:39,043 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:39,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:39,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1514534938, now seen corresponding path program 1 times [2022-04-06 13:37:39,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:39,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852507322] [2022-04-06 13:37:39,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:39,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,326 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 13:37:39,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:39,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852507322] [2022-04-06 13:37:39,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852507322] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:39,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:39,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:37:39,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957464305] [2022-04-06 13:37:39,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:39,327 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:37:39,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:39,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:37:39,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:39,327 INFO L87 Difference]: Start difference. First operand 617 states and 750 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 13:37:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:42,714 INFO L93 Difference]: Finished difference Result 1504 states and 1836 transitions. [2022-04-06 13:37:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-04-06 13:37:42,714 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 13:37:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:42,716 INFO L225 Difference]: With dead ends: 1504 [2022-04-06 13:37:42,716 INFO L226 Difference]: Without dead ends: 1357 [2022-04-06 13:37:42,717 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=676, Invalid=2630, Unknown=0, NotChecked=0, Total=3306 [2022-04-06 13:37:42,717 INFO L913 BasicCegarLoop]: 412 mSDtfsCounter, 3376 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 4421 mSolverCounterSat, 1144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 5565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1144 IncrementalHoareTripleChecker+Valid, 4421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:42,717 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3381 Valid, 1502 Invalid, 5565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1144 Valid, 4421 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-06 13:37:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2022-04-06 13:37:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 978. [2022-04-06 13:37:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 777 states have (on average 1.250965250965251) internal successors, (972), 800 states have internal predecessors, (972), 101 states have call successors, (101), 77 states have call predecessors, (101), 99 states have return successors, (132), 107 states have call predecessors, (132), 95 states have call successors, (132) [2022-04-06 13:37:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1205 transitions. [2022-04-06 13:37:42,814 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1205 transitions. Word has length 73 [2022-04-06 13:37:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:42,814 INFO L478 AbstractCegarLoop]: Abstraction has 978 states and 1205 transitions. [2022-04-06 13:37:42,814 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 13:37:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1205 transitions. [2022-04-06 13:37:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-06 13:37:42,815 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:42,815 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 13:37:42,815 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-04-06 13:37:42,816 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:42,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:42,816 INFO L85 PathProgramCache]: Analyzing trace with hash 100059264, now seen corresponding path program 1 times [2022-04-06 13:37:42,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:42,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345786929] [2022-04-06 13:37:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:42,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,038 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 13:37:43,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:43,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345786929] [2022-04-06 13:37:43,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345786929] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:43,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:43,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 13:37:43,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100754970] [2022-04-06 13:37:43,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:43,039 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 13:37:43,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 13:37:43,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:37:43,040 INFO L87 Difference]: Start difference. First operand 978 states and 1205 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 13:37:44,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:44,561 INFO L93 Difference]: Finished difference Result 1080 states and 1346 transitions. [2022-04-06 13:37:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 13:37:44,561 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 13:37:44,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:44,563 INFO L225 Difference]: With dead ends: 1080 [2022-04-06 13:37:44,563 INFO L226 Difference]: Without dead ends: 1038 [2022-04-06 13:37:44,563 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 13:37:44,564 INFO L913 BasicCegarLoop]: 393 mSDtfsCounter, 383 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 4035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:44,564 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 2424 Invalid, 4035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 13:37:44,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-04-06 13:37:44,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 968. [2022-04-06 13:37:44,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 771 states have (on average 1.2503242542153048) internal successors, (964), 794 states have internal predecessors, (964), 97 states have call successors, (97), 77 states have call predecessors, (97), 99 states have return successors, (128), 103 states have call predecessors, (128), 91 states have call successors, (128) [2022-04-06 13:37:44,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1189 transitions. [2022-04-06 13:37:44,651 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1189 transitions. Word has length 79 [2022-04-06 13:37:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:44,652 INFO L478 AbstractCegarLoop]: Abstraction has 968 states and 1189 transitions. [2022-04-06 13:37:44,652 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 13:37:44,652 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1189 transitions. [2022-04-06 13:37:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-06 13:37:44,653 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:44,653 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 13:37:44,653 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-04-06 13:37:44,653 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:44,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:44,653 INFO L85 PathProgramCache]: Analyzing trace with hash 226042889, now seen corresponding path program 1 times [2022-04-06 13:37:44,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:44,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623226233] [2022-04-06 13:37:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:44,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:45,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:45,133 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 13:37:45,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:45,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623226233] [2022-04-06 13:37:45,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623226233] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:45,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:45,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:37:45,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444720553] [2022-04-06 13:37:45,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:45,134 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:37:45,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:37:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:45,135 INFO L87 Difference]: Start difference. First operand 968 states and 1189 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 13:37:46,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:46,968 INFO L93 Difference]: Finished difference Result 1040 states and 1294 transitions. [2022-04-06 13:37:46,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:37:46,969 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 13:37:46,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:46,971 INFO L225 Difference]: With dead ends: 1040 [2022-04-06 13:37:46,971 INFO L226 Difference]: Without dead ends: 955 [2022-04-06 13:37:46,971 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 13:37:46,971 INFO L913 BasicCegarLoop]: 373 mSDtfsCounter, 184 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 4171 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 4242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:46,972 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 2265 Invalid, 4242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 4171 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 13:37:46,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-04-06 13:37:47,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 876. [2022-04-06 13:37:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 695 states have (on average 1.260431654676259) internal successors, (876), 715 states have internal predecessors, (876), 90 states have call successors, (90), 71 states have call predecessors, (90), 90 states have return successors, (118), 95 states have call predecessors, (118), 85 states have call successors, (118) [2022-04-06 13:37:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1084 transitions. [2022-04-06 13:37:47,070 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1084 transitions. Word has length 72 [2022-04-06 13:37:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:47,071 INFO L478 AbstractCegarLoop]: Abstraction has 876 states and 1084 transitions. [2022-04-06 13:37:47,071 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 13:37:47,071 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1084 transitions. [2022-04-06 13:37:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 13:37:47,072 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:47,072 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 13:37:47,072 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-04-06 13:37:47,072 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:47,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:47,072 INFO L85 PathProgramCache]: Analyzing trace with hash -293312583, now seen corresponding path program 1 times [2022-04-06 13:37:47,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:47,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919626141] [2022-04-06 13:37:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:47,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:47,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:47,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:47,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:47,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:47,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:47,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:47,239 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 13:37:47,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:47,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919626141] [2022-04-06 13:37:47,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919626141] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:47,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:47,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 13:37:47,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406581237] [2022-04-06 13:37:47,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:47,240 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 13:37:47,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:47,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 13:37:47,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:47,240 INFO L87 Difference]: Start difference. First operand 876 states and 1084 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 13:37:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:49,090 INFO L93 Difference]: Finished difference Result 1263 states and 1556 transitions. [2022-04-06 13:37:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-06 13:37:49,090 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 13:37:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:49,099 INFO L225 Difference]: With dead ends: 1263 [2022-04-06 13:37:49,099 INFO L226 Difference]: Without dead ends: 1133 [2022-04-06 13:37:49,100 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-04-06 13:37:49,100 INFO L913 BasicCegarLoop]: 635 mSDtfsCounter, 1953 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:49,100 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 1586 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 13:37:49,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-04-06 13:37:49,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 978. [2022-04-06 13:37:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 776 states have (on average 1.2487113402061856) internal successors, (969), 791 states have internal predecessors, (969), 105 states have call successors, (105), 76 states have call predecessors, (105), 96 states have return successors, (135), 114 states have call predecessors, (135), 100 states have call successors, (135) [2022-04-06 13:37:49,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1209 transitions. [2022-04-06 13:37:49,207 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1209 transitions. Word has length 73 [2022-04-06 13:37:49,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:49,207 INFO L478 AbstractCegarLoop]: Abstraction has 978 states and 1209 transitions. [2022-04-06 13:37:49,208 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 13:37:49,208 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1209 transitions. [2022-04-06 13:37:49,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-06 13:37:49,209 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:49,209 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 13:37:49,209 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-04-06 13:37:49,209 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:49,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:49,209 INFO L85 PathProgramCache]: Analyzing trace with hash -7999414, now seen corresponding path program 1 times [2022-04-06 13:37:49,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:49,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81619933] [2022-04-06 13:37:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:49,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:49,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:49,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:49,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:37:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:49,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:49,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:49,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 13:37:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:49,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:49,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:49,397 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 13:37:49,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:49,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81619933] [2022-04-06 13:37:49,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81619933] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:49,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:49,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:37:49,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430307888] [2022-04-06 13:37:49,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:49,397 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:37:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:37:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:37:49,398 INFO L87 Difference]: Start difference. First operand 978 states and 1209 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 13:37:50,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:50,395 INFO L93 Difference]: Finished difference Result 1123 states and 1401 transitions. [2022-04-06 13:37:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:37:50,395 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 13:37:50,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:50,397 INFO L225 Difference]: With dead ends: 1123 [2022-04-06 13:37:50,397 INFO L226 Difference]: Without dead ends: 1038 [2022-04-06 13:37:50,397 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 13:37:50,398 INFO L913 BasicCegarLoop]: 355 mSDtfsCounter, 349 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:50,398 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1266 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:37:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-04-06 13:37:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 960. [2022-04-06 13:37:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 762 states have (on average 1.2480314960629921) internal successors, (951), 777 states have internal predecessors, (951), 101 states have call successors, (101), 76 states have call predecessors, (101), 96 states have return successors, (129), 110 states have call predecessors, (129), 96 states have call successors, (129) [2022-04-06 13:37:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1181 transitions. [2022-04-06 13:37:50,517 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1181 transitions. Word has length 75 [2022-04-06 13:37:50,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:50,517 INFO L478 AbstractCegarLoop]: Abstraction has 960 states and 1181 transitions. [2022-04-06 13:37:50,517 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 13:37:50,517 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1181 transitions. [2022-04-06 13:37:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 13:37:50,518 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:50,518 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 13:37:50,518 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-04-06 13:37:50,518 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:50,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:50,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1981078137, now seen corresponding path program 1 times [2022-04-06 13:37:50,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:50,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756511469] [2022-04-06 13:37:50,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:50,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 13:37:50,528 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 13:37:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 13:37:50,568 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 13:37:50,568 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-06 13:37:50,569 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 13:37:50,570 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-04-06 13:37:50,572 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] [2022-04-06 13:37:50,573 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 13:37:50,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 01:37:50 BasicIcfg [2022-04-06 13:37:50,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 13:37:50,645 INFO L158 Benchmark]: Toolchain (without parser) took 135411.88ms. Allocated memory was 189.8MB in the beginning and 423.6MB in the end (delta: 233.8MB). Free memory was 130.4MB in the beginning and 326.5MB in the end (delta: -196.1MB). Peak memory consumption was 38.0MB. Max. memory is 8.0GB. [2022-04-06 13:37:50,645 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory was 148.6MB in the beginning and 148.6MB in the end (delta: 75.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 13:37:50,645 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.30ms. Allocated memory was 189.8MB in the beginning and 268.4MB in the end (delta: 78.6MB). Free memory was 130.1MB in the beginning and 220.1MB in the end (delta: -90.0MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-04-06 13:37:50,645 INFO L158 Benchmark]: Boogie Preprocessor took 96.07ms. Allocated memory is still 268.4MB. Free memory was 220.1MB in the beginning and 214.9MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-04-06 13:37:50,645 INFO L158 Benchmark]: RCFGBuilder took 929.88ms. Allocated memory is still 268.4MB. Free memory was 214.9MB in the beginning and 148.8MB in the end (delta: 66.1MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. [2022-04-06 13:37:50,646 INFO L158 Benchmark]: IcfgTransformer took 49.35ms. Allocated memory is still 268.4MB. Free memory was 148.8MB in the beginning and 140.9MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-04-06 13:37:50,646 INFO L158 Benchmark]: TraceAbstraction took 133799.90ms. Allocated memory was 268.4MB in the beginning and 423.6MB in the end (delta: 155.2MB). Free memory was 140.4MB in the beginning and 326.5MB in the end (delta: -186.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 13:37:50,646 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory was 148.6MB in the beginning and 148.6MB in the end (delta: 75.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 532.30ms. Allocated memory was 189.8MB in the beginning and 268.4MB in the end (delta: 78.6MB). Free memory was 130.1MB in the beginning and 220.1MB in the end (delta: -90.0MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 96.07ms. Allocated memory is still 268.4MB. Free memory was 220.1MB in the beginning and 214.9MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 929.88ms. Allocated memory is still 268.4MB. Free memory was 214.9MB in the beginning and 148.8MB in the end (delta: 66.1MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. * IcfgTransformer took 49.35ms. Allocated memory is still 268.4MB. Free memory was 148.8MB in the beginning and 140.9MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 133799.90ms. Allocated memory was 268.4MB in the beginning and 423.6MB in the end (delta: 155.2MB). Free memory was 140.4MB in the beginning and 326.5MB in the end (delta: -186.1MB). There was no memory consumed. 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 - CounterExampleResult [Line: 59]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; VAL [\old(compFptr)=147535, \old(compRegistered)=147529, \old(customIrp)=147518, \old(DC)=147533, \old(DeviceUsageTypePaging)=147522, \old(Executive)=147515, \old(IPC)=147524, \old(KernelMode)=147520, \old(lowerDriverReturn)=147513, \old(MPR1)=147526, \old(MPR3)=147536, \old(myStatus)=147532, \old(NP)=147516, \old(pended)=147519, \old(pirp)=147527, \old(routine)=147514, \old(s)=147521, \old(setEventCalled)=147517, \old(SKIP1)=147523, \old(SKIP2)=147530, \old(Suspended)=147528, \old(UNLOADED)=147534, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=0, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=0, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1755] CALL _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=1, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=5, UNLOADED=0] [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1755] RET _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1772] CALL stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1772] RET stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND FALSE !(myStatus >= 0) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1587] return (myStatus); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=4, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=-1073741637, compFptr=0, compRegistered=1, Context=4, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=-4, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=-1073741637, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1944] returnVal2 = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1981] return (returnVal2); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp8=18446744072635809979, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=4, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=-3, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=0, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioHPCdrDeviceControl(DeviceObject, Irp)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioDeviceControl(devobj, pirp)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND FALSE !(\read(we_should_unload)) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1825] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1826] COND FALSE !(s == NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1833] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1834] COND FALSE !(s == MPR3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1841] COND TRUE s != UNLOADED VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1842] COND TRUE status != -1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1843] COND TRUE s != SKIP2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1844] COND FALSE !(s != IPC) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1857] COND FALSE !(pended != 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1869] COND TRUE status != 259 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=0, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1871] CALL errorFn() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 30 procedures, 517 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 133.7s, OverallIterations: 67, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 116.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69203 SdHoareTripleChecker+Valid, 100.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68784 mSDsluCounter, 116935 SdHoareTripleChecker+Invalid, 85.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78304 mSDsCounter, 23996 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 193675 IncrementalHoareTripleChecker+Invalid, 217671 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23996 mSolverCounterUnsat, 38631 mSDtfsCounter, 193675 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1741 GetRequests, 647 SyntacticMatches, 14 SemanticMatches, 1080 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2730 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=978occurred in iteration=62, InterpolantAutomatonStates: 890, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 66 MinimizatonAttempts, 8532 StatesRemovedByMinimization, 66 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 3941 NumberOfCodeBlocks, 3941 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 3802 ConstructedInterpolants, 0 QuantifiedInterpolants, 20031 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 66 InterpolantComputations, 66 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2022-04-06 13:37:50,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...