/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/floppy_simpl4.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 13:36:25,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 13:36:25,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 13:36:25,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 13:36:25,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 13:36:25,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 13:36:25,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 13:36:25,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 13:36:25,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 13:36:25,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 13:36:25,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 13:36:25,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 13:36:25,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 13:36:25,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 13:36:25,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 13:36:25,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 13:36:25,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 13:36:25,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 13:36:25,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 13:36:25,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 13:36:25,764 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 13:36:25,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 13:36:25,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 13:36:25,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 13:36:25,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 13:36:25,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 13:36:25,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 13:36:25,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 13:36:25,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 13:36:25,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 13:36:25,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-06 13:36:25,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-06 13:36:25,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-06 13:36:25,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-06 13:36:25,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-06 13:36:25,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-06 13:36:25,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-06 13:36:25,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-06 13:36:25,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-06 13:36:25,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 13:36:25,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 13:36:25,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 13:36:25,783 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 13:36:25,804 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 13:36:25,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 13:36:25,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 13:36:25,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 13:36:25,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 13:36:25,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 13:36:25,806 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 13:36:25,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 13:36:25,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 13:36:25,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 13:36:25,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 13:36:25,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 13:36:25,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 13:36:25,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 13:36:25,807 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 13:36:25,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 13:36:25,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 13:36:25,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 13:36:25,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 13:36:25,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 13:36:25,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 13:36:25,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 13:36:25,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 13:36:25,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 13:36:25,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 13:36:25,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 13:36:25,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 13:36:25,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 13:36:25,810 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 13:36:25,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 13:36:26,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 13:36:26,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 13:36:26,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 13:36:26,027 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 13:36:26,027 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 13:36:26,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2022-04-06 13:36:26,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86165209e/99192e8e39db436b833dfaa2453836fc/FLAG5474b19ab [2022-04-06 13:36:26,500 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 13:36:26,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2022-04-06 13:36:26,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86165209e/99192e8e39db436b833dfaa2453836fc/FLAG5474b19ab [2022-04-06 13:36:26,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86165209e/99192e8e39db436b833dfaa2453836fc [2022-04-06 13:36:26,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 13:36:26,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 13:36:26,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 13:36:26,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 13:36:26,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 13:36:26,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:36:26" (1/1) ... [2022-04-06 13:36:26,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd58951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:36:26, skipping insertion in model container [2022-04-06 13:36:26,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:36:26" (1/1) ... [2022-04-06 13:36:26,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 13:36:26,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 13:36:26,826 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/floppy_simpl4.cil-2.c[48585,48598] [2022-04-06 13:36:26,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 13:36:26,833 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 13:36:26,890 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/floppy_simpl4.cil-2.c[48585,48598] [2022-04-06 13:36:26,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 13:36:26,900 INFO L208 MainTranslator]: Completed translation [2022-04-06 13:36:26,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:36:26 WrapperNode [2022-04-06 13:36:26,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 13:36:26,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 13:36:26,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 13:36:26,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 13:36:26,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:36:26" (1/1) ... [2022-04-06 13:36:26,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:36:26" (1/1) ... [2022-04-06 13:36:26,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:36:26" (1/1) ... [2022-04-06 13:36:26,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:36:26" (1/1) ... [2022-04-06 13:36:26,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:36:26" (1/1) ... [2022-04-06 13:36:26,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:36:26" (1/1) ... [2022-04-06 13:36:26,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:36:26" (1/1) ... [2022-04-06 13:36:26,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 13:36:26,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 13:36:26,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 13:36:26,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 13:36:26,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:36:26" (1/1) ... [2022-04-06 13:36:26,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 13:36:26,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 13:36:26,977 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 13:36:26,998 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 13:36:27,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 13:36:27,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 13:36:27,016 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 13:36:27,016 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-06 13:36:27,016 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-04-06 13:36:27,016 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-06 13:36:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-06 13:36:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-06 13:36:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-06 13:36:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-06 13:36:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-04-06 13:36:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-04-06 13:36:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-06 13:36:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-04-06 13:36:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-04-06 13:36:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-04-06 13:36:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-04-06 13:36:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-06 13:36:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 13:36:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 13:36:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-04-06 13:36:27,019 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-06 13:36:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-04-06 13:36:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-06 13:36:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 13:36:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-06 13:36:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 13:36:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 13:36:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 13:36:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 13:36:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 13:36:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 13:36:27,197 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 13:36:27,199 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 13:36:27,224 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,264 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 13:36:27,264 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 13:36:27,280 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,291 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 13:36:27,292 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 13:36:27,296 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,460 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-06 13:36:27,460 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-06 13:36:27,461 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,522 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2022-04-06 13:36:27,522 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2022-04-06 13:36:27,537 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,547 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-06 13:36:27,548 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-06 13:36:27,609 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,615 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 13:36:27,615 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 13:36:27,616 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,621 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 13:36:27,621 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 13:36:27,621 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,630 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 13:36:27,630 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 13:36:27,661 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,679 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-04-06 13:36:27,679 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-04-06 13:36:27,682 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,755 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-04-06 13:36:27,755 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-04-06 13:36:27,782 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,785 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 13:36:27,786 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 13:36:27,786 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,793 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 13:36:27,793 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 13:36:27,793 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 13:36:27,796 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 13:36:27,796 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 13:36:27,820 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 13:36:27,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 13:36:27,832 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 13:36:27,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:36:27 BoogieIcfgContainer [2022-04-06 13:36:27,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 13:36:27,836 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 13:36:27,836 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 13:36:27,837 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 13:36:27,839 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:36:27" (1/1) ... [2022-04-06 13:36:27,840 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 13:36:27,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 01:36:27 BasicIcfg [2022-04-06 13:36:27,884 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 13:36:27,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 13:36:27,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 13:36:27,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 13:36:27,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 01:36:26" (1/4) ... [2022-04-06 13:36:27,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f320e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:36:27, skipping insertion in model container [2022-04-06 13:36:27,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:36:26" (2/4) ... [2022-04-06 13:36:27,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f320e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:36:27, skipping insertion in model container [2022-04-06 13:36:27,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:36:27" (3/4) ... [2022-04-06 13:36:27,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f320e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 01:36:27, skipping insertion in model container [2022-04-06 13:36:27,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 01:36:27" (4/4) ... [2022-04-06 13:36:27,895 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.cqvasr [2022-04-06 13:36:27,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 13:36:27,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 13:36:27,931 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 13:36:27,935 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 13:36:27,935 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 13:36:27,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 389 states, 288 states have (on average 1.46875) internal successors, (423), 314 states have internal predecessors, (423), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 66 states have call predecessors, (71), 71 states have call successors, (71) [2022-04-06 13:36:27,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-06 13:36:27,954 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:27,955 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 13:36:27,955 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:27,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:27,959 INFO L85 PathProgramCache]: Analyzing trace with hash 871879161, now seen corresponding path program 1 times [2022-04-06 13:36:27,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:27,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771695471] [2022-04-06 13:36:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:27,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:28,339 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 13:36:28,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:28,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771695471] [2022-04-06 13:36:28,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771695471] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:28,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:28,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 13:36:28,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561979405] [2022-04-06 13:36:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:28,345 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 13:36:28,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:28,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 13:36:28,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-06 13:36:28,370 INFO L87 Difference]: Start difference. First operand has 389 states, 288 states have (on average 1.46875) internal successors, (423), 314 states have internal predecessors, (423), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 66 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 13:36:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:29,401 INFO L93 Difference]: Finished difference Result 666 states and 978 transitions. [2022-04-06 13:36:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 13:36:29,403 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), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-06 13:36:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:29,412 INFO L225 Difference]: With dead ends: 666 [2022-04-06 13:36:29,412 INFO L226 Difference]: Without dead ends: 422 [2022-04-06 13:36:29,417 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-06 13:36:29,419 INFO L913 BasicCegarLoop]: 496 mSDtfsCounter, 408 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:29,419 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 735 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:36:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-04-06 13:36:29,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 380. [2022-04-06 13:36:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 282 states have (on average 1.429078014184397) internal successors, (403), 306 states have internal predecessors, (403), 71 states have call successors, (71), 28 states have call predecessors, (71), 26 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-06 13:36:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 523 transitions. [2022-04-06 13:36:29,475 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 523 transitions. Word has length 20 [2022-04-06 13:36:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:29,475 INFO L478 AbstractCegarLoop]: Abstraction has 380 states and 523 transitions. [2022-04-06 13:36:29,475 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), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 13:36:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 523 transitions. [2022-04-06 13:36:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-06 13:36:29,476 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:29,476 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 13:36:29,477 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 13:36:29,477 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash 291212257, now seen corresponding path program 1 times [2022-04-06 13:36:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:29,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471413748] [2022-04-06 13:36:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:29,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:29,633 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 13:36:29,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:29,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471413748] [2022-04-06 13:36:29,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471413748] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:29,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:29,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:36:29,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012894954] [2022-04-06 13:36:29,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:29,635 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:36:29,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:29,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:36:29,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:36:29,636 INFO L87 Difference]: Start difference. First operand 380 states and 523 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:36:30,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:30,870 INFO L93 Difference]: Finished difference Result 747 states and 1022 transitions. [2022-04-06 13:36:30,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:36:30,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-04-06 13:36:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:30,874 INFO L225 Difference]: With dead ends: 747 [2022-04-06 13:36:30,874 INFO L226 Difference]: Without dead ends: 584 [2022-04-06 13:36:30,875 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:30,876 INFO L913 BasicCegarLoop]: 634 mSDtfsCounter, 717 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:30,877 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 892 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:36:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-04-06 13:36:30,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 525. [2022-04-06 13:36:30,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 405 states have (on average 1.3530864197530865) internal successors, (548), 410 states have internal predecessors, (548), 78 states have call successors, (78), 41 states have call predecessors, (78), 41 states have return successors, (90), 75 states have call predecessors, (90), 66 states have call successors, (90) [2022-04-06 13:36:30,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 716 transitions. [2022-04-06 13:36:30,910 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 716 transitions. Word has length 25 [2022-04-06 13:36:30,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:30,910 INFO L478 AbstractCegarLoop]: Abstraction has 525 states and 716 transitions. [2022-04-06 13:36:30,910 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:36:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 716 transitions. [2022-04-06 13:36:30,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-06 13:36:30,911 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:30,911 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 13:36:30,912 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 13:36:30,912 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:30,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:30,912 INFO L85 PathProgramCache]: Analyzing trace with hash 525888156, now seen corresponding path program 1 times [2022-04-06 13:36:30,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:30,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138503878] [2022-04-06 13:36:30,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:30,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,048 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 13:36:31,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:31,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138503878] [2022-04-06 13:36:31,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138503878] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:31,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:31,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:36:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128790089] [2022-04-06 13:36:31,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:31,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:36:31,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:36:31,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:36:31,050 INFO L87 Difference]: Start difference. First operand 525 states and 716 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:36:31,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:31,682 INFO L93 Difference]: Finished difference Result 695 states and 934 transitions. [2022-04-06 13:36:31,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:36:31,682 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), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-04-06 13:36:31,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:31,686 INFO L225 Difference]: With dead ends: 695 [2022-04-06 13:36:31,686 INFO L226 Difference]: Without dead ends: 676 [2022-04-06 13:36:31,686 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:31,687 INFO L913 BasicCegarLoop]: 459 mSDtfsCounter, 946 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:31,688 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 603 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:36:31,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-04-06 13:36:31,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 583. [2022-04-06 13:36:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 450 states have (on average 1.3488888888888888) internal successors, (607), 463 states have internal predecessors, (607), 82 states have call successors, (82), 46 states have call predecessors, (82), 50 states have return successors, (101), 78 states have call predecessors, (101), 72 states have call successors, (101) [2022-04-06 13:36:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 790 transitions. [2022-04-06 13:36:31,718 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 790 transitions. Word has length 31 [2022-04-06 13:36:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:31,718 INFO L478 AbstractCegarLoop]: Abstraction has 583 states and 790 transitions. [2022-04-06 13:36:31,718 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), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:36:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 790 transitions. [2022-04-06 13:36:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 13:36:31,719 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:31,719 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] [2022-04-06 13:36:31,719 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 13:36:31,719 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:31,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:31,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2004508172, now seen corresponding path program 1 times [2022-04-06 13:36:31,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:31,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214806532] [2022-04-06 13:36:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:31,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:31,831 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 13:36:31,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:31,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214806532] [2022-04-06 13:36:31,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214806532] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:31,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:31,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:36:31,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150650784] [2022-04-06 13:36:31,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:31,832 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:36:31,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:36:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:36:31,833 INFO L87 Difference]: Start difference. First operand 583 states and 790 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:36:32,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:32,777 INFO L93 Difference]: Finished difference Result 1117 states and 1501 transitions. [2022-04-06 13:36:32,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:36:32,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2022-04-06 13:36:32,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:32,782 INFO L225 Difference]: With dead ends: 1117 [2022-04-06 13:36:32,783 INFO L226 Difference]: Without dead ends: 819 [2022-04-06 13:36:32,784 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:32,793 INFO L913 BasicCegarLoop]: 541 mSDtfsCounter, 724 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:32,794 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 744 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:36:32,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-04-06 13:36:32,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 771. [2022-04-06 13:36:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 606 states have (on average 1.33993399339934) internal successors, (812), 616 states have internal predecessors, (812), 99 states have call successors, (99), 61 states have call predecessors, (99), 65 states have return successors, (136), 97 states have call predecessors, (136), 91 states have call successors, (136) [2022-04-06 13:36:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1047 transitions. [2022-04-06 13:36:32,854 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1047 transitions. Word has length 33 [2022-04-06 13:36:32,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:32,854 INFO L478 AbstractCegarLoop]: Abstraction has 771 states and 1047 transitions. [2022-04-06 13:36:32,854 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:36:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1047 transitions. [2022-04-06 13:36:32,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-06 13:36:32,859 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:32,859 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:32,860 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-06 13:36:32,860 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:32,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:32,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1331218314, now seen corresponding path program 1 times [2022-04-06 13:36:32,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:32,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934094987] [2022-04-06 13:36:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:32,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:32,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:32,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:32,981 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 13:36:32,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:32,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934094987] [2022-04-06 13:36:32,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934094987] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:32,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:32,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:36:32,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522380680] [2022-04-06 13:36:32,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:32,982 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:36:32,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:32,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:36:32,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:32,982 INFO L87 Difference]: Start difference. First operand 771 states and 1047 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:33,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:33,916 INFO L93 Difference]: Finished difference Result 865 states and 1163 transitions. [2022-04-06 13:36:33,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:36:33,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 38 [2022-04-06 13:36:33,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:33,920 INFO L225 Difference]: With dead ends: 865 [2022-04-06 13:36:33,920 INFO L226 Difference]: Without dead ends: 860 [2022-04-06 13:36:33,920 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:33,921 INFO L913 BasicCegarLoop]: 476 mSDtfsCounter, 516 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:33,921 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 945 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:36:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-04-06 13:36:33,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 808. [2022-04-06 13:36:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 636 states have (on average 1.3333333333333333) internal successors, (848), 648 states have internal predecessors, (848), 99 states have call successors, (99), 61 states have call predecessors, (99), 72 states have return successors, (143), 100 states have call predecessors, (143), 91 states have call successors, (143) [2022-04-06 13:36:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1090 transitions. [2022-04-06 13:36:33,952 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1090 transitions. Word has length 38 [2022-04-06 13:36:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:33,952 INFO L478 AbstractCegarLoop]: Abstraction has 808 states and 1090 transitions. [2022-04-06 13:36:33,952 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:33,953 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1090 transitions. [2022-04-06 13:36:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-06 13:36:33,953 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:33,953 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] [2022-04-06 13:36:33,953 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 13:36:33,954 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:33,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:33,954 INFO L85 PathProgramCache]: Analyzing trace with hash 528133378, now seen corresponding path program 1 times [2022-04-06 13:36:33,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:33,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735190001] [2022-04-06 13:36:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:33,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:34,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:34,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:34,072 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 13:36:34,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:34,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735190001] [2022-04-06 13:36:34,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735190001] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:34,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:34,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 13:36:34,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169173760] [2022-04-06 13:36:34,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:34,073 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 13:36:34,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:34,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 13:36:34,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 13:36:34,073 INFO L87 Difference]: Start difference. First operand 808 states and 1090 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, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:36:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:35,087 INFO L93 Difference]: Finished difference Result 842 states and 1132 transitions. [2022-04-06 13:36:35,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 13:36:35,088 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, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-04-06 13:36:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:35,091 INFO L225 Difference]: With dead ends: 842 [2022-04-06 13:36:35,091 INFO L226 Difference]: Without dead ends: 839 [2022-04-06 13:36:35,091 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 13:36:35,092 INFO L913 BasicCegarLoop]: 467 mSDtfsCounter, 256 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:35,092 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 743 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:36:35,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-04-06 13:36:35,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 819. [2022-04-06 13:36:35,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 647 states have (on average 1.3323029366306027) internal successors, (862), 658 states have internal predecessors, (862), 99 states have call successors, (99), 62 states have call predecessors, (99), 72 states have return successors, (143), 100 states have call predecessors, (143), 91 states have call successors, (143) [2022-04-06 13:36:35,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1104 transitions. [2022-04-06 13:36:35,125 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1104 transitions. Word has length 38 [2022-04-06 13:36:35,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:35,125 INFO L478 AbstractCegarLoop]: Abstraction has 819 states and 1104 transitions. [2022-04-06 13:36:35,126 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, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 13:36:35,126 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1104 transitions. [2022-04-06 13:36:35,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-06 13:36:35,127 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:35,127 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 13:36:35,127 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-06 13:36:35,128 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:35,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:35,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1133526780, now seen corresponding path program 1 times [2022-04-06 13:36:35,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:35,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330939438] [2022-04-06 13:36:35,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:35,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:36:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:35,360 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 13:36:35,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:35,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330939438] [2022-04-06 13:36:35,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330939438] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:35,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:35,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176949746] [2022-04-06 13:36:35,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:35,361 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:35,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:35,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:35,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:35,362 INFO L87 Difference]: Start difference. First operand 819 states and 1104 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:37,077 INFO L93 Difference]: Finished difference Result 877 states and 1176 transitions. [2022-04-06 13:36:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:37,078 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2022-04-06 13:36:37,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:37,082 INFO L225 Difference]: With dead ends: 877 [2022-04-06 13:36:37,082 INFO L226 Difference]: Without dead ends: 871 [2022-04-06 13:36:37,083 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:36:37,084 INFO L913 BasicCegarLoop]: 455 mSDtfsCounter, 1349 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 2390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:37,084 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 1168 Invalid, 2390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 13:36:37,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-04-06 13:36:37,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 819. [2022-04-06 13:36:37,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 647 states have (on average 1.330757341576507) internal successors, (861), 658 states have internal predecessors, (861), 99 states have call successors, (99), 62 states have call predecessors, (99), 72 states have return successors, (143), 100 states have call predecessors, (143), 91 states have call successors, (143) [2022-04-06 13:36:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1103 transitions. [2022-04-06 13:36:37,124 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1103 transitions. Word has length 40 [2022-04-06 13:36:37,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:37,124 INFO L478 AbstractCegarLoop]: Abstraction has 819 states and 1103 transitions. [2022-04-06 13:36:37,124 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:37,125 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1103 transitions. [2022-04-06 13:36:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-06 13:36:37,126 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:37,126 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:37,126 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-06 13:36:37,126 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:37,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:37,127 INFO L85 PathProgramCache]: Analyzing trace with hash -174684695, now seen corresponding path program 1 times [2022-04-06 13:36:37,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:37,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715639111] [2022-04-06 13:36:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:37,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:37,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:37,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:37,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:36:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:37,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:37,315 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 13:36:37,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:37,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715639111] [2022-04-06 13:36:37,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715639111] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:37,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:37,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:37,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127328316] [2022-04-06 13:36:37,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:37,317 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:37,318 INFO L87 Difference]: Start difference. First operand 819 states and 1103 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:38,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:38,630 INFO L93 Difference]: Finished difference Result 877 states and 1175 transitions. [2022-04-06 13:36:38,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:36:38,630 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2022-04-06 13:36:38,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:38,644 INFO L225 Difference]: With dead ends: 877 [2022-04-06 13:36:38,644 INFO L226 Difference]: Without dead ends: 871 [2022-04-06 13:36:38,644 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:36:38,645 INFO L913 BasicCegarLoop]: 456 mSDtfsCounter, 1634 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:38,645 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1649 Valid, 885 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:36:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-04-06 13:36:38,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 819. [2022-04-06 13:36:38,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 647 states have (on average 1.3292117465224111) internal successors, (860), 658 states have internal predecessors, (860), 99 states have call successors, (99), 62 states have call predecessors, (99), 72 states have return successors, (143), 100 states have call predecessors, (143), 91 states have call successors, (143) [2022-04-06 13:36:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1102 transitions. [2022-04-06 13:36:38,684 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1102 transitions. Word has length 41 [2022-04-06 13:36:38,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:38,684 INFO L478 AbstractCegarLoop]: Abstraction has 819 states and 1102 transitions. [2022-04-06 13:36:38,684 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1102 transitions. [2022-04-06 13:36:38,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-06 13:36:38,686 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:38,686 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:38,686 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-06 13:36:38,686 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:38,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:38,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1816872397, now seen corresponding path program 1 times [2022-04-06 13:36:38,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:38,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911608401] [2022-04-06 13:36:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:38,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 13:36:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:38,817 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 13:36:38,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:38,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911608401] [2022-04-06 13:36:38,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911608401] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:38,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:38,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:36:38,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500194666] [2022-04-06 13:36:38,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:38,818 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:36:38,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:38,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:36:38,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:38,818 INFO L87 Difference]: Start difference. First operand 819 states and 1102 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:39,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:39,829 INFO L93 Difference]: Finished difference Result 882 states and 1180 transitions. [2022-04-06 13:36:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:39,830 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2022-04-06 13:36:39,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:39,833 INFO L225 Difference]: With dead ends: 882 [2022-04-06 13:36:39,833 INFO L226 Difference]: Without dead ends: 867 [2022-04-06 13:36:39,833 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:39,833 INFO L913 BasicCegarLoop]: 488 mSDtfsCounter, 671 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:39,834 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 1288 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:36:39,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-04-06 13:36:39,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 817. [2022-04-06 13:36:39,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 646 states have (on average 1.328173374613003) internal successors, (858), 657 states have internal predecessors, (858), 98 states have call successors, (98), 62 states have call predecessors, (98), 72 states have return successors, (142), 99 states have call predecessors, (142), 90 states have call successors, (142) [2022-04-06 13:36:39,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1098 transitions. [2022-04-06 13:36:39,871 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1098 transitions. Word has length 42 [2022-04-06 13:36:39,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:39,871 INFO L478 AbstractCegarLoop]: Abstraction has 817 states and 1098 transitions. [2022-04-06 13:36:39,871 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1098 transitions. [2022-04-06 13:36:39,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-06 13:36:39,872 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:39,872 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:39,872 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-06 13:36:39,872 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:39,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:39,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1390592098, now seen corresponding path program 1 times [2022-04-06 13:36:39,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:39,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330665063] [2022-04-06 13:36:39,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:39,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:39,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 13:36:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:40,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:36:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:40,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:40,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330665063] [2022-04-06 13:36:40,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330665063] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:40,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:40,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:36:40,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176694029] [2022-04-06 13:36:40,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:40,024 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:36:40,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:40,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:36:40,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:40,024 INFO L87 Difference]: Start difference. First operand 817 states and 1098 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:41,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:41,007 INFO L93 Difference]: Finished difference Result 880 states and 1176 transitions. [2022-04-06 13:36:41,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:41,007 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2022-04-06 13:36:41,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:41,012 INFO L225 Difference]: With dead ends: 880 [2022-04-06 13:36:41,012 INFO L226 Difference]: Without dead ends: 860 [2022-04-06 13:36:41,012 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:41,013 INFO L913 BasicCegarLoop]: 475 mSDtfsCounter, 515 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1698 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:41,014 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1300 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1698 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:36:41,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-04-06 13:36:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 810. [2022-04-06 13:36:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 642 states have (on average 1.3286604361370717) internal successors, (853), 653 states have internal predecessors, (853), 96 states have call successors, (96), 61 states have call predecessors, (96), 71 states have return successors, (140), 97 states have call predecessors, (140), 88 states have call successors, (140) [2022-04-06 13:36:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1089 transitions. [2022-04-06 13:36:41,072 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1089 transitions. Word has length 41 [2022-04-06 13:36:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:41,073 INFO L478 AbstractCegarLoop]: Abstraction has 810 states and 1089 transitions. [2022-04-06 13:36:41,073 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1089 transitions. [2022-04-06 13:36:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-06 13:36:41,074 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:41,074 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:41,074 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-06 13:36:41,074 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:41,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:41,075 INFO L85 PathProgramCache]: Analyzing trace with hash -4159802, now seen corresponding path program 1 times [2022-04-06 13:36:41,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:41,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653213543] [2022-04-06 13:36:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:41,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:41,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:41,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653213543] [2022-04-06 13:36:41,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653213543] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:41,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:41,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:36:41,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662471519] [2022-04-06 13:36:41,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:41,225 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:36:41,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:41,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:36:41,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:41,226 INFO L87 Difference]: Start difference. First operand 810 states and 1089 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 13:36:42,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:42,218 INFO L93 Difference]: Finished difference Result 857 states and 1144 transitions. [2022-04-06 13:36:42,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:36:42,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2022-04-06 13:36:42,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:42,222 INFO L225 Difference]: With dead ends: 857 [2022-04-06 13:36:42,222 INFO L226 Difference]: Without dead ends: 835 [2022-04-06 13:36:42,222 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:42,222 INFO L913 BasicCegarLoop]: 456 mSDtfsCounter, 391 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:42,223 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1012 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:36:42,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-04-06 13:36:42,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 812. [2022-04-06 13:36:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 644 states have (on average 1.3276397515527951) internal successors, (855), 655 states have internal predecessors, (855), 96 states have call successors, (96), 61 states have call predecessors, (96), 71 states have return successors, (140), 97 states have call predecessors, (140), 88 states have call successors, (140) [2022-04-06 13:36:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1091 transitions. [2022-04-06 13:36:42,258 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1091 transitions. Word has length 42 [2022-04-06 13:36:42,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:42,258 INFO L478 AbstractCegarLoop]: Abstraction has 812 states and 1091 transitions. [2022-04-06 13:36:42,258 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 13:36:42,258 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1091 transitions. [2022-04-06 13:36:42,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-06 13:36:42,259 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:42,259 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] [2022-04-06 13:36:42,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-06 13:36:42,259 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:42,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash 383655172, now seen corresponding path program 1 times [2022-04-06 13:36:42,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:42,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852518024] [2022-04-06 13:36:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:42,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 13:36:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:42,390 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 13:36:42,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:42,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852518024] [2022-04-06 13:36:42,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852518024] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:42,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:42,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:36:42,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883466253] [2022-04-06 13:36:42,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:42,391 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:36:42,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:42,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:36:42,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:36:42,392 INFO L87 Difference]: Start difference. First operand 812 states and 1091 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 13:36:43,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:43,544 INFO L93 Difference]: Finished difference Result 908 states and 1209 transitions. [2022-04-06 13:36:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:36:43,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-04-06 13:36:43,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:43,550 INFO L225 Difference]: With dead ends: 908 [2022-04-06 13:36:43,550 INFO L226 Difference]: Without dead ends: 840 [2022-04-06 13:36:43,550 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:43,551 INFO L913 BasicCegarLoop]: 432 mSDtfsCounter, 378 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:43,551 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 914 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:36:43,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-04-06 13:36:43,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 816. [2022-04-06 13:36:43,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 647 states have (on average 1.3261205564142196) internal successors, (858), 658 states have internal predecessors, (858), 96 states have call successors, (96), 61 states have call predecessors, (96), 72 states have return successors, (142), 98 states have call predecessors, (142), 88 states have call successors, (142) [2022-04-06 13:36:43,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1096 transitions. [2022-04-06 13:36:43,587 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1096 transitions. Word has length 44 [2022-04-06 13:36:43,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:43,588 INFO L478 AbstractCegarLoop]: Abstraction has 816 states and 1096 transitions. [2022-04-06 13:36:43,588 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 13:36:43,588 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1096 transitions. [2022-04-06 13:36:43,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-06 13:36:43,588 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:43,589 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] [2022-04-06 13:36:43,589 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-06 13:36:43,589 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:43,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:43,589 INFO L85 PathProgramCache]: Analyzing trace with hash -864015436, now seen corresponding path program 1 times [2022-04-06 13:36:43,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:43,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429399322] [2022-04-06 13:36:43,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:43,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:43,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:43,716 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 13:36:43,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:43,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429399322] [2022-04-06 13:36:43,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429399322] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:43,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:43,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:36:43,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277833104] [2022-04-06 13:36:43,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:43,717 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:36:43,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:43,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:36:43,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:43,718 INFO L87 Difference]: Start difference. First operand 816 states and 1096 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 13:36:44,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:44,846 INFO L93 Difference]: Finished difference Result 860 states and 1147 transitions. [2022-04-06 13:36:44,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:36:44,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2022-04-06 13:36:44,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:44,850 INFO L225 Difference]: With dead ends: 860 [2022-04-06 13:36:44,850 INFO L226 Difference]: Without dead ends: 838 [2022-04-06 13:36:44,850 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:44,853 INFO L913 BasicCegarLoop]: 461 mSDtfsCounter, 293 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:44,853 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 1010 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:36:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-04-06 13:36:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 816. [2022-04-06 13:36:44,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 647 states have (on average 1.3261205564142196) internal successors, (858), 658 states have internal predecessors, (858), 96 states have call successors, (96), 61 states have call predecessors, (96), 72 states have return successors, (142), 98 states have call predecessors, (142), 88 states have call successors, (142) [2022-04-06 13:36:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1096 transitions. [2022-04-06 13:36:44,892 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1096 transitions. Word has length 43 [2022-04-06 13:36:44,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:44,893 INFO L478 AbstractCegarLoop]: Abstraction has 816 states and 1096 transitions. [2022-04-06 13:36:44,893 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 13:36:44,893 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1096 transitions. [2022-04-06 13:36:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-06 13:36:44,894 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:44,894 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:44,894 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-06 13:36:44,894 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:44,895 INFO L85 PathProgramCache]: Analyzing trace with hash -392590886, now seen corresponding path program 1 times [2022-04-06 13:36:44,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:44,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029444558] [2022-04-06 13:36:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:44,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:44,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:44,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:45,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:45,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:45,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:45,160 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 13:36:45,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:45,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029444558] [2022-04-06 13:36:45,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029444558] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:45,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:45,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:36:45,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037888398] [2022-04-06 13:36:45,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:45,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:36:45,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:45,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:36:45,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:45,162 INFO L87 Difference]: Start difference. First operand 816 states and 1096 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:46,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:46,031 INFO L93 Difference]: Finished difference Result 861 states and 1149 transitions. [2022-04-06 13:36:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:36:46,032 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 45 [2022-04-06 13:36:46,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:46,034 INFO L225 Difference]: With dead ends: 861 [2022-04-06 13:36:46,034 INFO L226 Difference]: Without dead ends: 843 [2022-04-06 13:36:46,035 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:46,035 INFO L913 BasicCegarLoop]: 457 mSDtfsCounter, 784 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:46,035 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 1325 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:36:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-04-06 13:36:46,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 814. [2022-04-06 13:36:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 646 states have (on average 1.325077399380805) internal successors, (856), 657 states have internal predecessors, (856), 95 states have call successors, (95), 61 states have call predecessors, (95), 72 states have return successors, (141), 97 states have call predecessors, (141), 87 states have call successors, (141) [2022-04-06 13:36:46,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1092 transitions. [2022-04-06 13:36:46,075 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1092 transitions. Word has length 45 [2022-04-06 13:36:46,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:46,075 INFO L478 AbstractCegarLoop]: Abstraction has 814 states and 1092 transitions. [2022-04-06 13:36:46,075 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:46,075 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1092 transitions. [2022-04-06 13:36:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-06 13:36:46,077 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:46,077 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 13:36:46,077 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-06 13:36:46,077 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:46,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:46,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1509958495, now seen corresponding path program 1 times [2022-04-06 13:36:46,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:46,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503038649] [2022-04-06 13:36:46,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:46,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:36:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:46,213 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 13:36:46,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:46,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503038649] [2022-04-06 13:36:46,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503038649] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:46,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:46,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:36:46,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768343020] [2022-04-06 13:36:46,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:46,214 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:36:46,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:46,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:36:46,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:46,215 INFO L87 Difference]: Start difference. First operand 814 states and 1092 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:47,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:47,025 INFO L93 Difference]: Finished difference Result 880 states and 1173 transitions. [2022-04-06 13:36:47,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:36:47,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-04-06 13:36:47,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:47,028 INFO L225 Difference]: With dead ends: 880 [2022-04-06 13:36:47,029 INFO L226 Difference]: Without dead ends: 804 [2022-04-06 13:36:47,029 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:36:47,029 INFO L913 BasicCegarLoop]: 486 mSDtfsCounter, 730 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:47,030 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 878 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:36:47,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-04-06 13:36:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 775. [2022-04-06 13:36:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 616 states have (on average 1.3246753246753247) internal successors, (816), 628 states have internal predecessors, (816), 93 states have call successors, (93), 60 states have call predecessors, (93), 65 states have return successors, (132), 88 states have call predecessors, (132), 85 states have call successors, (132) [2022-04-06 13:36:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1041 transitions. [2022-04-06 13:36:47,064 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1041 transitions. Word has length 46 [2022-04-06 13:36:47,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:47,064 INFO L478 AbstractCegarLoop]: Abstraction has 775 states and 1041 transitions. [2022-04-06 13:36:47,064 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1041 transitions. [2022-04-06 13:36:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 13:36:47,065 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:47,065 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 13:36:47,065 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-06 13:36:47,066 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:47,066 INFO L85 PathProgramCache]: Analyzing trace with hash -214129706, now seen corresponding path program 1 times [2022-04-06 13:36:47,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:47,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073342534] [2022-04-06 13:36:47,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:47,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 13:36:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:47,164 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 13:36:47,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:47,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073342534] [2022-04-06 13:36:47,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073342534] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:47,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:47,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 13:36:47,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353705503] [2022-04-06 13:36:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:47,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 13:36:47,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:47,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 13:36:47,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-06 13:36:47,165 INFO L87 Difference]: Start difference. First operand 775 states and 1041 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 13:36:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:48,199 INFO L93 Difference]: Finished difference Result 1134 states and 1535 transitions. [2022-04-06 13:36:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:36:48,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2022-04-06 13:36:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:48,208 INFO L225 Difference]: With dead ends: 1134 [2022-04-06 13:36:48,208 INFO L226 Difference]: Without dead ends: 1131 [2022-04-06 13:36:48,208 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:48,209 INFO L913 BasicCegarLoop]: 533 mSDtfsCounter, 583 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:48,209 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 782 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:36:48,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-04-06 13:36:48,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 888. [2022-04-06 13:36:48,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 707 states have (on average 1.3295615275813295) internal successors, (940), 721 states have internal predecessors, (940), 103 states have call successors, (103), 70 states have call predecessors, (103), 77 states have return successors, (152), 98 states have call predecessors, (152), 95 states have call successors, (152) [2022-04-06 13:36:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1195 transitions. [2022-04-06 13:36:48,254 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1195 transitions. Word has length 47 [2022-04-06 13:36:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:48,255 INFO L478 AbstractCegarLoop]: Abstraction has 888 states and 1195 transitions. [2022-04-06 13:36:48,255 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 13:36:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1195 transitions. [2022-04-06 13:36:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 13:36:48,256 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:48,256 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:36:48,256 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-06 13:36:48,256 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:48,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash 530917733, now seen corresponding path program 1 times [2022-04-06 13:36:48,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:48,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416066047] [2022-04-06 13:36:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:48,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:48,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:48,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:48,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:48,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:36:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:48,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:36:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:48,468 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 13:36:48,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:48,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416066047] [2022-04-06 13:36:48,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416066047] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:48,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:48,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:36:48,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149789463] [2022-04-06 13:36:48,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:48,469 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:36:48,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:48,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:36:48,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:48,470 INFO L87 Difference]: Start difference. First operand 888 states and 1195 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:49,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:49,541 INFO L93 Difference]: Finished difference Result 933 states and 1248 transitions. [2022-04-06 13:36:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 13:36:49,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-04-06 13:36:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:49,545 INFO L225 Difference]: With dead ends: 933 [2022-04-06 13:36:49,545 INFO L226 Difference]: Without dead ends: 915 [2022-04-06 13:36:49,545 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:49,546 INFO L913 BasicCegarLoop]: 448 mSDtfsCounter, 308 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:49,546 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 1260 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:36:49,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-04-06 13:36:49,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 886. [2022-04-06 13:36:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 706 states have (on average 1.3286118980169972) internal successors, (938), 720 states have internal predecessors, (938), 102 states have call successors, (102), 70 states have call predecessors, (102), 77 states have return successors, (151), 97 states have call predecessors, (151), 94 states have call successors, (151) [2022-04-06 13:36:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1191 transitions. [2022-04-06 13:36:49,588 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1191 transitions. Word has length 47 [2022-04-06 13:36:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:49,589 INFO L478 AbstractCegarLoop]: Abstraction has 886 states and 1191 transitions. [2022-04-06 13:36:49,589 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1191 transitions. [2022-04-06 13:36:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 13:36:49,590 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:49,590 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 13:36:49,590 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-06 13:36:49,590 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:49,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:49,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1920468263, now seen corresponding path program 1 times [2022-04-06 13:36:49,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:49,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742340864] [2022-04-06 13:36:49,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:49,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 13:36:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:49,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:49,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742340864] [2022-04-06 13:36:49,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742340864] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:49,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:49,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:36:49,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198140288] [2022-04-06 13:36:49,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:49,761 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:36:49,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:36:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:49,761 INFO L87 Difference]: Start difference. First operand 886 states and 1191 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-06 13:36:51,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:51,188 INFO L93 Difference]: Finished difference Result 1483 states and 1950 transitions. [2022-04-06 13:36:51,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:51,188 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2022-04-06 13:36:51,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:51,192 INFO L225 Difference]: With dead ends: 1483 [2022-04-06 13:36:51,192 INFO L226 Difference]: Without dead ends: 936 [2022-04-06 13:36:51,193 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-04-06 13:36:51,193 INFO L913 BasicCegarLoop]: 556 mSDtfsCounter, 1843 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:51,193 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 779 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 13:36:51,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-04-06 13:36:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 877. [2022-04-06 13:36:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 697 states have (on average 1.3156384505021521) internal successors, (917), 711 states have internal predecessors, (917), 102 states have call successors, (102), 70 states have call predecessors, (102), 77 states have return successors, (151), 97 states have call predecessors, (151), 94 states have call successors, (151) [2022-04-06 13:36:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1170 transitions. [2022-04-06 13:36:51,248 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1170 transitions. Word has length 48 [2022-04-06 13:36:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:51,248 INFO L478 AbstractCegarLoop]: Abstraction has 877 states and 1170 transitions. [2022-04-06 13:36:51,248 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-06 13:36:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1170 transitions. [2022-04-06 13:36:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 13:36:51,249 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:51,249 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 13:36:51,249 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-06 13:36:51,250 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:51,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:51,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1683726876, now seen corresponding path program 1 times [2022-04-06 13:36:51,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:51,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644963364] [2022-04-06 13:36:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:51,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:51,384 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 13:36:51,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:51,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644963364] [2022-04-06 13:36:51,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644963364] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:51,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:51,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:36:51,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224391406] [2022-04-06 13:36:51,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:51,385 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:36:51,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:51,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:36:51,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:36:51,386 INFO L87 Difference]: Start difference. First operand 877 states and 1170 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 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 13:36:52,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:52,755 INFO L93 Difference]: Finished difference Result 1151 states and 1528 transitions. [2022-04-06 13:36:52,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 13:36:52,755 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 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 13:36:52,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:52,760 INFO L225 Difference]: With dead ends: 1151 [2022-04-06 13:36:52,760 INFO L226 Difference]: Without dead ends: 1075 [2022-04-06 13:36:52,760 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-04-06 13:36:52,761 INFO L913 BasicCegarLoop]: 545 mSDtfsCounter, 1640 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:52,761 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1643 Valid, 1333 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:36:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-04-06 13:36:52,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 932. [2022-04-06 13:36:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 741 states have (on average 1.3090418353576248) internal successors, (970), 757 states have internal predecessors, (970), 105 states have call successors, (105), 71 states have call predecessors, (105), 85 states have return successors, (168), 104 states have call predecessors, (168), 97 states have call successors, (168) [2022-04-06 13:36:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1243 transitions. [2022-04-06 13:36:52,813 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1243 transitions. Word has length 50 [2022-04-06 13:36:52,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:52,813 INFO L478 AbstractCegarLoop]: Abstraction has 932 states and 1243 transitions. [2022-04-06 13:36:52,813 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 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 13:36:52,813 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1243 transitions. [2022-04-06 13:36:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 13:36:52,816 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:52,816 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 13:36:52,816 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-06 13:36:52,817 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:52,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:52,817 INFO L85 PathProgramCache]: Analyzing trace with hash -415030459, now seen corresponding path program 1 times [2022-04-06 13:36:52,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:52,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010118274] [2022-04-06 13:36:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:52,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:36:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:36:52,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:52,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010118274] [2022-04-06 13:36:52,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010118274] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:52,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:52,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:36:52,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328143384] [2022-04-06 13:36:52,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:52,979 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:36:52,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:52,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:36:52,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:36:52,980 INFO L87 Difference]: Start difference. First operand 932 states and 1243 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:53,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:53,957 INFO L93 Difference]: Finished difference Result 979 states and 1296 transitions. [2022-04-06 13:36:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:53,958 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-04-06 13:36:53,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:53,960 INFO L225 Difference]: With dead ends: 979 [2022-04-06 13:36:53,961 INFO L226 Difference]: Without dead ends: 959 [2022-04-06 13:36:53,961 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:36:53,961 INFO L913 BasicCegarLoop]: 452 mSDtfsCounter, 620 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:53,962 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 1521 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:36:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-04-06 13:36:54,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 932. [2022-04-06 13:36:54,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 741 states have (on average 1.2928475033738192) internal successors, (958), 757 states have internal predecessors, (958), 105 states have call successors, (105), 71 states have call predecessors, (105), 85 states have return successors, (168), 104 states have call predecessors, (168), 97 states have call successors, (168) [2022-04-06 13:36:54,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1231 transitions. [2022-04-06 13:36:54,011 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1231 transitions. Word has length 50 [2022-04-06 13:36:54,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:54,012 INFO L478 AbstractCegarLoop]: Abstraction has 932 states and 1231 transitions. [2022-04-06 13:36:54,012 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1231 transitions. [2022-04-06 13:36:54,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 13:36:54,013 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:54,013 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 13:36:54,013 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-06 13:36:54,013 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:54,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:54,013 INFO L85 PathProgramCache]: Analyzing trace with hash 527542300, now seen corresponding path program 1 times [2022-04-06 13:36:54,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:54,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600748346] [2022-04-06 13:36:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:54,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:54,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:54,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:54,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 13:36:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:54,128 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 13:36:54,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:54,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600748346] [2022-04-06 13:36:54,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600748346] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:54,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:54,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:36:54,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497855136] [2022-04-06 13:36:54,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:54,130 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:36:54,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:54,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:36:54,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:36:54,131 INFO L87 Difference]: Start difference. First operand 932 states and 1231 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 13:36:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:55,085 INFO L93 Difference]: Finished difference Result 1041 states and 1345 transitions. [2022-04-06 13:36:55,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:55,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2022-04-06 13:36:55,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:55,088 INFO L225 Difference]: With dead ends: 1041 [2022-04-06 13:36:55,088 INFO L226 Difference]: Without dead ends: 685 [2022-04-06 13:36:55,089 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:55,089 INFO L913 BasicCegarLoop]: 470 mSDtfsCounter, 747 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:55,089 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 814 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:36:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-04-06 13:36:55,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 623. [2022-04-06 13:36:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 498 states have (on average 1.2751004016064258) internal successors, (635), 509 states have internal predecessors, (635), 71 states have call successors, (71), 46 states have call predecessors, (71), 53 states have return successors, (85), 68 states have call predecessors, (85), 63 states have call successors, (85) [2022-04-06 13:36:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 791 transitions. [2022-04-06 13:36:55,127 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 791 transitions. Word has length 52 [2022-04-06 13:36:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:55,127 INFO L478 AbstractCegarLoop]: Abstraction has 623 states and 791 transitions. [2022-04-06 13:36:55,127 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 13:36:55,127 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 791 transitions. [2022-04-06 13:36:55,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 13:36:55,128 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:55,128 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 13:36:55,128 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-06 13:36:55,128 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash 868088371, now seen corresponding path program 1 times [2022-04-06 13:36:55,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:55,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877360000] [2022-04-06 13:36:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:55,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:36:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:55,264 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 13:36:55,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:55,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877360000] [2022-04-06 13:36:55,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877360000] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:55,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:55,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:36:55,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484334112] [2022-04-06 13:36:55,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:55,265 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:36:55,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:55,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:36:55,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:36:55,266 INFO L87 Difference]: Start difference. First operand 623 states and 791 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:56,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:56,280 INFO L93 Difference]: Finished difference Result 673 states and 848 transitions. [2022-04-06 13:36:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:36:56,282 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2022-04-06 13:36:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:56,284 INFO L225 Difference]: With dead ends: 673 [2022-04-06 13:36:56,284 INFO L226 Difference]: Without dead ends: 645 [2022-04-06 13:36:56,284 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:36:56,285 INFO L913 BasicCegarLoop]: 439 mSDtfsCounter, 725 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:56,285 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 1492 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:36:56,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-04-06 13:36:56,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 613. [2022-04-06 13:36:56,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 488 states have (on average 1.2704918032786885) internal successors, (620), 499 states have internal predecessors, (620), 71 states have call successors, (71), 46 states have call predecessors, (71), 53 states have return successors, (85), 68 states have call predecessors, (85), 63 states have call successors, (85) [2022-04-06 13:36:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 776 transitions. [2022-04-06 13:36:56,321 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 776 transitions. Word has length 51 [2022-04-06 13:36:56,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:56,321 INFO L478 AbstractCegarLoop]: Abstraction has 613 states and 776 transitions. [2022-04-06 13:36:56,321 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:36:56,322 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 776 transitions. [2022-04-06 13:36:56,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 13:36:56,322 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:56,322 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 13:36:56,322 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-06 13:36:56,323 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:56,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:56,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1730699339, now seen corresponding path program 1 times [2022-04-06 13:36:56,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:56,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780675144] [2022-04-06 13:36:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:56,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:36:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:56,481 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 13:36:56,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:56,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780675144] [2022-04-06 13:36:56,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780675144] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:56,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:56,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:36:56,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059180243] [2022-04-06 13:36:56,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:56,482 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:36:56,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:56,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:36:56,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:36:56,482 INFO L87 Difference]: Start difference. First operand 613 states and 776 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:57,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:57,622 INFO L93 Difference]: Finished difference Result 669 states and 843 transitions. [2022-04-06 13:36:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:36:57,623 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-04-06 13:36:57,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:57,625 INFO L225 Difference]: With dead ends: 669 [2022-04-06 13:36:57,625 INFO L226 Difference]: Without dead ends: 647 [2022-04-06 13:36:57,625 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:57,626 INFO L913 BasicCegarLoop]: 400 mSDtfsCounter, 418 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:57,626 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 1022 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:36:57,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-04-06 13:36:57,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 616. [2022-04-06 13:36:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 491 states have (on average 1.2688391038696538) internal successors, (623), 501 states have internal predecessors, (623), 71 states have call successors, (71), 46 states have call predecessors, (71), 53 states have return successors, (85), 69 states have call predecessors, (85), 63 states have call successors, (85) [2022-04-06 13:36:57,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 779 transitions. [2022-04-06 13:36:57,664 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 779 transitions. Word has length 51 [2022-04-06 13:36:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:57,664 INFO L478 AbstractCegarLoop]: Abstraction has 616 states and 779 transitions. [2022-04-06 13:36:57,664 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:36:57,664 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 779 transitions. [2022-04-06 13:36:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 13:36:57,665 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:57,665 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 13:36:57,665 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-06 13:36:57,665 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:57,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:57,665 INFO L85 PathProgramCache]: Analyzing trace with hash -585236833, now seen corresponding path program 1 times [2022-04-06 13:36:57,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:57,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486127379] [2022-04-06 13:36:57,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:57,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:57,823 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 13:36:57,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:57,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486127379] [2022-04-06 13:36:57,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486127379] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:57,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:57,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:36:57,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786677917] [2022-04-06 13:36:57,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:57,824 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:36:57,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:57,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:36:57,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:36:57,825 INFO L87 Difference]: Start difference. First operand 616 states and 779 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 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 13:36:58,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:36:58,645 INFO L93 Difference]: Finished difference Result 1050 states and 1349 transitions. [2022-04-06 13:36:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 13:36:58,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 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 52 [2022-04-06 13:36:58,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:36:58,647 INFO L225 Difference]: With dead ends: 1050 [2022-04-06 13:36:58,647 INFO L226 Difference]: Without dead ends: 676 [2022-04-06 13:36:58,648 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:36:58,649 INFO L913 BasicCegarLoop]: 397 mSDtfsCounter, 1298 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:36:58,649 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 740 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:36:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-04-06 13:36:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 627. [2022-04-06 13:36:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 502 states have (on average 1.2729083665338645) internal successors, (639), 512 states have internal predecessors, (639), 71 states have call successors, (71), 46 states have call predecessors, (71), 53 states have return successors, (85), 69 states have call predecessors, (85), 63 states have call successors, (85) [2022-04-06 13:36:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 795 transitions. [2022-04-06 13:36:58,690 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 795 transitions. Word has length 52 [2022-04-06 13:36:58,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:36:58,690 INFO L478 AbstractCegarLoop]: Abstraction has 627 states and 795 transitions. [2022-04-06 13:36:58,690 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 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 13:36:58,690 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 795 transitions. [2022-04-06 13:36:58,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 13:36:58,691 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:36:58,691 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] [2022-04-06 13:36:58,691 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-06 13:36:58,691 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:36:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:36:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash 768072864, now seen corresponding path program 1 times [2022-04-06 13:36:58,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:36:58,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057507764] [2022-04-06 13:36:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:36:58,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:36:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:36:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:36:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:36:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:36:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:36:58,847 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 13:36:58,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:36:58,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057507764] [2022-04-06 13:36:58,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057507764] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:36:58,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:36:58,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:36:58,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629255590] [2022-04-06 13:36:58,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:36:58,848 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:36:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:36:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:36:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:36:58,848 INFO L87 Difference]: Start difference. First operand 627 states and 795 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 7 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 13:37:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:00,363 INFO L93 Difference]: Finished difference Result 749 states and 943 transitions. [2022-04-06 13:37:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:37:00,363 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 7 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 52 [2022-04-06 13:37:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:00,366 INFO L225 Difference]: With dead ends: 749 [2022-04-06 13:37:00,366 INFO L226 Difference]: Without dead ends: 670 [2022-04-06 13:37:00,366 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2022-04-06 13:37:00,367 INFO L913 BasicCegarLoop]: 399 mSDtfsCounter, 653 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:00,367 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 1221 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 13:37:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-04-06 13:37:00,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 620. [2022-04-06 13:37:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 495 states have (on average 1.2686868686868686) internal successors, (628), 505 states have internal predecessors, (628), 71 states have call successors, (71), 46 states have call predecessors, (71), 53 states have return successors, (85), 69 states have call predecessors, (85), 63 states have call successors, (85) [2022-04-06 13:37:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 784 transitions. [2022-04-06 13:37:00,417 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 784 transitions. Word has length 52 [2022-04-06 13:37:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:00,417 INFO L478 AbstractCegarLoop]: Abstraction has 620 states and 784 transitions. [2022-04-06 13:37:00,417 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 7 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 13:37:00,417 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 784 transitions. [2022-04-06 13:37:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 13:37:00,418 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:00,418 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 13:37:00,418 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-06 13:37:00,418 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:00,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:00,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1124310208, now seen corresponding path program 1 times [2022-04-06 13:37:00,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:00,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515001147] [2022-04-06 13:37:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:00,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:00,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:00,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:00,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:00,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:00,565 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 13:37:00,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:00,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515001147] [2022-04-06 13:37:00,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515001147] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:00,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:00,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:37:00,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196298057] [2022-04-06 13:37:00,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:00,566 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:37:00,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:00,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:37:00,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:37:00,568 INFO L87 Difference]: Start difference. First operand 620 states and 784 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:01,741 INFO L93 Difference]: Finished difference Result 815 states and 1051 transitions. [2022-04-06 13:37:01,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:37:01,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-04-06 13:37:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:01,744 INFO L225 Difference]: With dead ends: 815 [2022-04-06 13:37:01,744 INFO L226 Difference]: Without dead ends: 738 [2022-04-06 13:37:01,744 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 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 13:37:01,745 INFO L913 BasicCegarLoop]: 556 mSDtfsCounter, 450 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:01,745 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 1030 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:37:01,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-04-06 13:37:01,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 575. [2022-04-06 13:37:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 455 states have (on average 1.2747252747252746) internal successors, (580), 465 states have internal predecessors, (580), 69 states have call successors, (69), 44 states have call predecessors, (69), 50 states have return successors, (82), 66 states have call predecessors, (82), 61 states have call successors, (82) [2022-04-06 13:37:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 731 transitions. [2022-04-06 13:37:01,783 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 731 transitions. Word has length 52 [2022-04-06 13:37:01,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:01,784 INFO L478 AbstractCegarLoop]: Abstraction has 575 states and 731 transitions. [2022-04-06 13:37:01,784 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 731 transitions. [2022-04-06 13:37:01,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-06 13:37:01,784 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:01,785 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 13:37:01,785 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-06 13:37:01,785 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:01,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash 525399217, now seen corresponding path program 1 times [2022-04-06 13:37:01,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:01,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511029733] [2022-04-06 13:37:01,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:01,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:01,967 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 13:37:01,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:01,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511029733] [2022-04-06 13:37:01,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511029733] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:01,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:01,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:01,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131600341] [2022-04-06 13:37:01,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:01,968 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:01,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:01,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:01,968 INFO L87 Difference]: Start difference. First operand 575 states and 731 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:02,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:02,992 INFO L93 Difference]: Finished difference Result 638 states and 818 transitions. [2022-04-06 13:37:02,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:37:02,992 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2022-04-06 13:37:02,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:02,994 INFO L225 Difference]: With dead ends: 638 [2022-04-06 13:37:02,994 INFO L226 Difference]: Without dead ends: 634 [2022-04-06 13:37:02,994 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:02,995 INFO L913 BasicCegarLoop]: 410 mSDtfsCounter, 520 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:02,995 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1704 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:37:02,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-04-06 13:37:03,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 592. [2022-04-06 13:37:03,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 470 states have (on average 1.2659574468085106) internal successors, (595), 480 states have internal predecessors, (595), 69 states have call successors, (69), 44 states have call predecessors, (69), 52 states have return successors, (91), 68 states have call predecessors, (91), 61 states have call successors, (91) [2022-04-06 13:37:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 755 transitions. [2022-04-06 13:37:03,034 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 755 transitions. Word has length 53 [2022-04-06 13:37:03,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:03,034 INFO L478 AbstractCegarLoop]: Abstraction has 592 states and 755 transitions. [2022-04-06 13:37:03,034 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 755 transitions. [2022-04-06 13:37:03,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-06 13:37:03,035 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:03,035 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 13:37:03,035 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-04-06 13:37:03,035 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:03,036 INFO L85 PathProgramCache]: Analyzing trace with hash 525430961, now seen corresponding path program 1 times [2022-04-06 13:37:03,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:03,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675131346] [2022-04-06 13:37:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:03,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:03,335 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 13:37:03,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:03,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675131346] [2022-04-06 13:37:03,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675131346] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:03,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:03,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:03,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965903810] [2022-04-06 13:37:03,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:03,336 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:03,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:03,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:03,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:03,337 INFO L87 Difference]: Start difference. First operand 592 states and 755 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:04,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:04,259 INFO L93 Difference]: Finished difference Result 626 states and 794 transitions. [2022-04-06 13:37:04,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:37:04,260 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2022-04-06 13:37:04,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:04,261 INFO L225 Difference]: With dead ends: 626 [2022-04-06 13:37:04,261 INFO L226 Difference]: Without dead ends: 611 [2022-04-06 13:37:04,262 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:04,262 INFO L913 BasicCegarLoop]: 414 mSDtfsCounter, 559 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:04,262 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 1621 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:37:04,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-04-06 13:37:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 589. [2022-04-06 13:37:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 467 states have (on average 1.2676659528907923) internal successors, (592), 478 states have internal predecessors, (592), 69 states have call successors, (69), 44 states have call predecessors, (69), 52 states have return successors, (90), 67 states have call predecessors, (90), 61 states have call successors, (90) [2022-04-06 13:37:04,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 751 transitions. [2022-04-06 13:37:04,301 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 751 transitions. Word has length 53 [2022-04-06 13:37:04,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:04,301 INFO L478 AbstractCegarLoop]: Abstraction has 589 states and 751 transitions. [2022-04-06 13:37:04,301 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:04,301 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 751 transitions. [2022-04-06 13:37:04,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 13:37:04,302 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:04,302 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 13:37:04,302 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-06 13:37:04,302 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:04,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:04,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1791629129, now seen corresponding path program 1 times [2022-04-06 13:37:04,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:04,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084050701] [2022-04-06 13:37:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:04,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 13:37:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:04,460 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 13:37:04,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:04,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084050701] [2022-04-06 13:37:04,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084050701] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:04,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:04,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 13:37:04,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588314905] [2022-04-06 13:37:04,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:04,461 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 13:37:04,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:04,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 13:37:04,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:04,461 INFO L87 Difference]: Start difference. First operand 589 states and 751 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:37:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:05,404 INFO L93 Difference]: Finished difference Result 624 states and 790 transitions. [2022-04-06 13:37:05,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:37:05,405 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-04-06 13:37:05,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:05,406 INFO L225 Difference]: With dead ends: 624 [2022-04-06 13:37:05,406 INFO L226 Difference]: Without dead ends: 596 [2022-04-06 13:37:05,407 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:05,407 INFO L913 BasicCegarLoop]: 408 mSDtfsCounter, 604 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:05,407 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1652 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:37:05,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-04-06 13:37:05,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 577. [2022-04-06 13:37:05,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 458 states have (on average 1.2663755458515285) internal successors, (580), 469 states have internal predecessors, (580), 67 states have call successors, (67), 43 states have call predecessors, (67), 51 states have return successors, (88), 65 states have call predecessors, (88), 59 states have call successors, (88) [2022-04-06 13:37:05,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 735 transitions. [2022-04-06 13:37:05,446 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 735 transitions. Word has length 55 [2022-04-06 13:37:05,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:05,447 INFO L478 AbstractCegarLoop]: Abstraction has 577 states and 735 transitions. [2022-04-06 13:37:05,447 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:37:05,447 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 735 transitions. [2022-04-06 13:37:05,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 13:37:05,448 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:05,448 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 13:37:05,448 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-06 13:37:05,448 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:05,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:05,448 INFO L85 PathProgramCache]: Analyzing trace with hash 310114016, now seen corresponding path program 1 times [2022-04-06 13:37:05,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:05,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023802340] [2022-04-06 13:37:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:05,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:05,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:05,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:05,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:05,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:05,631 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 13:37:05,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:05,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023802340] [2022-04-06 13:37:05,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023802340] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:05,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:05,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:37:05,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520646309] [2022-04-06 13:37:05,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:05,632 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:37:05,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:05,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:37:05,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:37:05,632 INFO L87 Difference]: Start difference. First operand 577 states and 735 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:37:06,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:06,707 INFO L93 Difference]: Finished difference Result 746 states and 969 transitions. [2022-04-06 13:37:06,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:37:06,708 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2022-04-06 13:37:06,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:06,710 INFO L225 Difference]: With dead ends: 746 [2022-04-06 13:37:06,710 INFO L226 Difference]: Without dead ends: 728 [2022-04-06 13:37:06,710 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:37:06,711 INFO L913 BasicCegarLoop]: 503 mSDtfsCounter, 1355 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:06,711 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1370 Valid, 892 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:37:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-04-06 13:37:06,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 561. [2022-04-06 13:37:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 445 states have (on average 1.2719101123595506) internal successors, (566), 455 states have internal predecessors, (566), 66 states have call successors, (66), 43 states have call predecessors, (66), 49 states have return successors, (79), 63 states have call predecessors, (79), 58 states have call successors, (79) [2022-04-06 13:37:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 711 transitions. [2022-04-06 13:37:06,758 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 711 transitions. Word has length 54 [2022-04-06 13:37:06,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:06,759 INFO L478 AbstractCegarLoop]: Abstraction has 561 states and 711 transitions. [2022-04-06 13:37:06,759 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 13:37:06,759 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 711 transitions. [2022-04-06 13:37:06,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-06 13:37:06,759 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:06,760 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 13:37:06,760 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-06 13:37:06,760 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:06,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:06,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1381037997, now seen corresponding path program 1 times [2022-04-06 13:37:06,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:06,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400743456] [2022-04-06 13:37:06,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:06,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-06 13:37:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-06 13:37:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:06,874 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 13:37:06,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:06,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400743456] [2022-04-06 13:37:06,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400743456] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:06,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:06,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 13:37:06,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003641998] [2022-04-06 13:37:06,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:06,875 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 13:37:06,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:06,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 13:37:06,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-06 13:37:06,875 INFO L87 Difference]: Start difference. First operand 561 states and 711 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:37:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:07,561 INFO L93 Difference]: Finished difference Result 898 states and 1149 transitions. [2022-04-06 13:37:07,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:37:07,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 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 13:37:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:07,563 INFO L225 Difference]: With dead ends: 898 [2022-04-06 13:37:07,563 INFO L226 Difference]: Without dead ends: 589 [2022-04-06 13:37:07,564 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:07,564 INFO L913 BasicCegarLoop]: 386 mSDtfsCounter, 436 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:07,565 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 800 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:37:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-04-06 13:37:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 566. [2022-04-06 13:37:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 449 states have (on average 1.265033407572383) internal successors, (568), 460 states have internal predecessors, (568), 66 states have call successors, (66), 43 states have call predecessors, (66), 50 states have return successors, (83), 63 states have call predecessors, (83), 58 states have call successors, (83) [2022-04-06 13:37:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 717 transitions. [2022-04-06 13:37:07,606 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 717 transitions. Word has length 61 [2022-04-06 13:37:07,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:07,606 INFO L478 AbstractCegarLoop]: Abstraction has 566 states and 717 transitions. [2022-04-06 13:37:07,606 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:37:07,606 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 717 transitions. [2022-04-06 13:37:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-06 13:37:07,607 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:07,607 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] [2022-04-06 13:37:07,607 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-06 13:37:07,607 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1616264812, now seen corresponding path program 1 times [2022-04-06 13:37:07,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:07,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888571967] [2022-04-06 13:37:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:07,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 13:37:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:07,827 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 13:37:07,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:07,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888571967] [2022-04-06 13:37:07,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888571967] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:07,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:07,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:37:07,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929122300] [2022-04-06 13:37:07,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:07,828 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:37:07,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:07,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:37:07,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:37:07,828 INFO L87 Difference]: Start difference. First operand 566 states and 717 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:37:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:08,537 INFO L93 Difference]: Finished difference Result 852 states and 1088 transitions. [2022-04-06 13:37:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:37:08,537 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 64 [2022-04-06 13:37:08,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:08,539 INFO L225 Difference]: With dead ends: 852 [2022-04-06 13:37:08,539 INFO L226 Difference]: Without dead ends: 538 [2022-04-06 13:37:08,540 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:37:08,540 INFO L913 BasicCegarLoop]: 388 mSDtfsCounter, 775 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:08,540 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1072 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:08,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-04-06 13:37:08,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 511. [2022-04-06 13:37:08,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 402 states have (on average 1.2537313432835822) internal successors, (504), 410 states have internal predecessors, (504), 63 states have call successors, (63), 42 states have call predecessors, (63), 45 states have return successors, (72), 59 states have call predecessors, (72), 56 states have call successors, (72) [2022-04-06 13:37:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 639 transitions. [2022-04-06 13:37:08,580 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 639 transitions. Word has length 64 [2022-04-06 13:37:08,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:08,580 INFO L478 AbstractCegarLoop]: Abstraction has 511 states and 639 transitions. [2022-04-06 13:37:08,581 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:37:08,581 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 639 transitions. [2022-04-06 13:37:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-06 13:37:08,581 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:08,581 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 13:37:08,582 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-04-06 13:37:08,582 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1336270132, now seen corresponding path program 1 times [2022-04-06 13:37:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:08,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753462777] [2022-04-06 13:37:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:08,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 13:37:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:08,743 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 13:37:08,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:08,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753462777] [2022-04-06 13:37:08,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753462777] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:08,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:08,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 13:37:08,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312311144] [2022-04-06 13:37:08,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:08,744 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 13:37:08,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:08,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 13:37:08,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:08,744 INFO L87 Difference]: Start difference. First operand 511 states and 639 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 6 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 13:37:09,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:09,925 INFO L93 Difference]: Finished difference Result 545 states and 678 transitions. [2022-04-06 13:37:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:37:09,925 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 6 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 13:37:09,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:09,927 INFO L225 Difference]: With dead ends: 545 [2022-04-06 13:37:09,927 INFO L226 Difference]: Without dead ends: 524 [2022-04-06 13:37:09,927 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:09,928 INFO L913 BasicCegarLoop]: 367 mSDtfsCounter, 518 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 2654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:09,928 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1064 Invalid, 2654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:37:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-04-06 13:37:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 508. [2022-04-06 13:37:09,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 399 states have (on average 1.255639097744361) internal successors, (501), 408 states have internal predecessors, (501), 63 states have call successors, (63), 42 states have call predecessors, (63), 45 states have return successors, (71), 58 states have call predecessors, (71), 56 states have call successors, (71) [2022-04-06 13:37:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 635 transitions. [2022-04-06 13:37:09,966 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 635 transitions. Word has length 59 [2022-04-06 13:37:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:09,966 INFO L478 AbstractCegarLoop]: Abstraction has 508 states and 635 transitions. [2022-04-06 13:37:09,967 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 6 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 13:37:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 635 transitions. [2022-04-06 13:37:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 13:37:09,967 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:09,968 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 13:37:09,968 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-04-06 13:37:09,968 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:09,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:09,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1613674778, now seen corresponding path program 1 times [2022-04-06 13:37:09,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:09,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55453826] [2022-04-06 13:37:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:09,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 13:37:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:10,110 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 13:37:10,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:10,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55453826] [2022-04-06 13:37:10,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55453826] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:10,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:10,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:10,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163632072] [2022-04-06 13:37:10,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:10,111 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:10,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:10,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:10,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:10,111 INFO L87 Difference]: Start difference. First operand 508 states and 635 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:10,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:10,953 INFO L93 Difference]: Finished difference Result 538 states and 669 transitions. [2022-04-06 13:37:10,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:37:10,954 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 58 [2022-04-06 13:37:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:10,955 INFO L225 Difference]: With dead ends: 538 [2022-04-06 13:37:10,955 INFO L226 Difference]: Without dead ends: 520 [2022-04-06 13:37:10,956 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:10,956 INFO L913 BasicCegarLoop]: 391 mSDtfsCounter, 487 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:10,956 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1502 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:37:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-04-06 13:37:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 504. [2022-04-06 13:37:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 396 states have (on average 1.255050505050505) internal successors, (497), 405 states have internal predecessors, (497), 62 states have call successors, (62), 42 states have call predecessors, (62), 45 states have return successors, (70), 57 states have call predecessors, (70), 55 states have call successors, (70) [2022-04-06 13:37:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 629 transitions. [2022-04-06 13:37:10,993 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 629 transitions. Word has length 58 [2022-04-06 13:37:10,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:10,993 INFO L478 AbstractCegarLoop]: Abstraction has 504 states and 629 transitions. [2022-04-06 13:37:10,993 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:10,994 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 629 transitions. [2022-04-06 13:37:10,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 13:37:10,994 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:10,994 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 13:37:10,994 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-04-06 13:37:10,995 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:10,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2114727091, now seen corresponding path program 1 times [2022-04-06 13:37:10,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:10,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227020171] [2022-04-06 13:37:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:10,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:37:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 13:37:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:11,131 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 13:37:11,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:11,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227020171] [2022-04-06 13:37:11,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227020171] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:11,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:11,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:11,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185950610] [2022-04-06 13:37:11,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:11,132 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:11,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:11,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:11,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:11,132 INFO L87 Difference]: Start difference. First operand 504 states and 629 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 3 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 13:37:12,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:12,100 INFO L93 Difference]: Finished difference Result 539 states and 669 transitions. [2022-04-06 13:37:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:37:12,100 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 3 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 13:37:12,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:12,102 INFO L225 Difference]: With dead ends: 539 [2022-04-06 13:37:12,102 INFO L226 Difference]: Without dead ends: 515 [2022-04-06 13:37:12,102 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:37:12,102 INFO L913 BasicCegarLoop]: 362 mSDtfsCounter, 453 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:12,102 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 913 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2015 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:37:12,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-04-06 13:37:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 499. [2022-04-06 13:37:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 393 states have (on average 1.251908396946565) internal successors, (492), 401 states have internal predecessors, (492), 61 states have call successors, (61), 42 states have call predecessors, (61), 44 states have return successors, (68), 56 states have call predecessors, (68), 54 states have call successors, (68) [2022-04-06 13:37:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 621 transitions. [2022-04-06 13:37:12,139 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 621 transitions. Word has length 60 [2022-04-06 13:37:12,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:12,140 INFO L478 AbstractCegarLoop]: Abstraction has 499 states and 621 transitions. [2022-04-06 13:37:12,140 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 3 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 13:37:12,140 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 621 transitions. [2022-04-06 13:37:12,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 13:37:12,141 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:12,141 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 13:37:12,141 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-04-06 13:37:12,141 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1861314870, now seen corresponding path program 1 times [2022-04-06 13:37:12,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:12,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599279367] [2022-04-06 13:37:12,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:12,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 13:37:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:12,286 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 13:37:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:12,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599279367] [2022-04-06 13:37:12,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599279367] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:12,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:12,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:12,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090695279] [2022-04-06 13:37:12,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:12,286 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:12,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:12,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:12,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:12,287 INFO L87 Difference]: Start difference. First operand 499 states and 621 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:37:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:13,160 INFO L93 Difference]: Finished difference Result 780 states and 980 transitions. [2022-04-06 13:37:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:37:13,160 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-04-06 13:37:13,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:13,162 INFO L225 Difference]: With dead ends: 780 [2022-04-06 13:37:13,162 INFO L226 Difference]: Without dead ends: 521 [2022-04-06 13:37:13,163 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:13,163 INFO L913 BasicCegarLoop]: 357 mSDtfsCounter, 745 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:13,163 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 1040 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-04-06 13:37:13,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 499. [2022-04-06 13:37:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 393 states have (on average 1.2468193384223918) internal successors, (490), 401 states have internal predecessors, (490), 61 states have call successors, (61), 42 states have call predecessors, (61), 44 states have return successors, (68), 56 states have call predecessors, (68), 54 states have call successors, (68) [2022-04-06 13:37:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 619 transitions. [2022-04-06 13:37:13,202 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 619 transitions. Word has length 68 [2022-04-06 13:37:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:13,202 INFO L478 AbstractCegarLoop]: Abstraction has 499 states and 619 transitions. [2022-04-06 13:37:13,202 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:37:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 619 transitions. [2022-04-06 13:37:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 13:37:13,203 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:13,203 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:13,203 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-06 13:37:13,203 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:13,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:13,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1116193296, now seen corresponding path program 1 times [2022-04-06 13:37:13,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:13,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107526208] [2022-04-06 13:37:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:13,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:13,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:13,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107526208] [2022-04-06 13:37:13,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107526208] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:13,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:13,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 13:37:13,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664630008] [2022-04-06 13:37:13,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:13,338 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 13:37:13,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:13,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 13:37:13,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-06 13:37:13,338 INFO L87 Difference]: Start difference. First operand 499 states and 619 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:37:14,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:14,274 INFO L93 Difference]: Finished difference Result 611 states and 749 transitions. [2022-04-06 13:37:14,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 13:37:14,275 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 63 [2022-04-06 13:37:14,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:14,277 INFO L225 Difference]: With dead ends: 611 [2022-04-06 13:37:14,277 INFO L226 Difference]: Without dead ends: 519 [2022-04-06 13:37:14,277 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:14,278 INFO L913 BasicCegarLoop]: 359 mSDtfsCounter, 501 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:14,278 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 812 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:37:14,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-04-06 13:37:14,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 503. [2022-04-06 13:37:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 396 states have (on average 1.244949494949495) internal successors, (493), 404 states have internal predecessors, (493), 61 states have call successors, (61), 42 states have call predecessors, (61), 45 states have return successors, (69), 57 states have call predecessors, (69), 54 states have call successors, (69) [2022-04-06 13:37:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 623 transitions. [2022-04-06 13:37:14,315 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 623 transitions. Word has length 63 [2022-04-06 13:37:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:14,315 INFO L478 AbstractCegarLoop]: Abstraction has 503 states and 623 transitions. [2022-04-06 13:37:14,315 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:37:14,316 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 623 transitions. [2022-04-06 13:37:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 13:37:14,316 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:14,316 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 13:37:14,316 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-04-06 13:37:14,317 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:14,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:14,317 INFO L85 PathProgramCache]: Analyzing trace with hash -929996240, now seen corresponding path program 1 times [2022-04-06 13:37:14,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:14,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862530267] [2022-04-06 13:37:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:14,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:14,543 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 13:37:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:14,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862530267] [2022-04-06 13:37:14,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862530267] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:14,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:14,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:14,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847419964] [2022-04-06 13:37:14,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:14,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:14,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:14,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:14,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:14,544 INFO L87 Difference]: Start difference. First operand 503 states and 623 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:37:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:15,694 INFO L93 Difference]: Finished difference Result 529 states and 653 transitions. [2022-04-06 13:37:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:37:15,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 63 [2022-04-06 13:37:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:15,699 INFO L225 Difference]: With dead ends: 529 [2022-04-06 13:37:15,699 INFO L226 Difference]: Without dead ends: 505 [2022-04-06 13:37:15,700 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:37:15,700 INFO L913 BasicCegarLoop]: 352 mSDtfsCounter, 502 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:15,700 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 991 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:37:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-04-06 13:37:15,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 489. [2022-04-06 13:37:15,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 384 states have (on average 1.2395833333333333) internal successors, (476), 391 states have internal predecessors, (476), 60 states have call successors, (60), 42 states have call predecessors, (60), 44 states have return successors, (68), 56 states have call predecessors, (68), 54 states have call successors, (68) [2022-04-06 13:37:15,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 604 transitions. [2022-04-06 13:37:15,743 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 604 transitions. Word has length 63 [2022-04-06 13:37:15,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:15,743 INFO L478 AbstractCegarLoop]: Abstraction has 489 states and 604 transitions. [2022-04-06 13:37:15,743 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 13:37:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 604 transitions. [2022-04-06 13:37:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 13:37:15,744 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:15,744 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 13:37:15,744 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-04-06 13:37:15,745 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:15,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:15,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1704717596, now seen corresponding path program 1 times [2022-04-06 13:37:15,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:15,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635716682] [2022-04-06 13:37:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:15,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 13:37:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:15,916 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 13:37:15,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:15,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635716682] [2022-04-06 13:37:15,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635716682] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:15,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:15,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 13:37:15,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519609957] [2022-04-06 13:37:15,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:15,917 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 13:37:15,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:15,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 13:37:15,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-06 13:37:15,918 INFO L87 Difference]: Start difference. First operand 489 states and 604 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 13:37:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:16,741 INFO L93 Difference]: Finished difference Result 750 states and 936 transitions. [2022-04-06 13:37:16,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 13:37:16,741 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), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2022-04-06 13:37:16,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:16,756 INFO L225 Difference]: With dead ends: 750 [2022-04-06 13:37:16,757 INFO L226 Difference]: Without dead ends: 524 [2022-04-06 13:37:16,757 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:16,758 INFO L913 BasicCegarLoop]: 375 mSDtfsCounter, 435 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:16,758 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 1369 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:37:16,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-04-06 13:37:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 489. [2022-04-06 13:37:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 384 states have (on average 1.234375) internal successors, (474), 391 states have internal predecessors, (474), 60 states have call successors, (60), 42 states have call predecessors, (60), 44 states have return successors, (68), 56 states have call predecessors, (68), 54 states have call successors, (68) [2022-04-06 13:37:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 602 transitions. [2022-04-06 13:37:16,798 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 602 transitions. Word has length 71 [2022-04-06 13:37:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:16,798 INFO L478 AbstractCegarLoop]: Abstraction has 489 states and 602 transitions. [2022-04-06 13:37:16,798 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), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-06 13:37:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 602 transitions. [2022-04-06 13:37:16,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 13:37:16,799 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:16,799 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 13:37:16,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-04-06 13:37:16,799 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:16,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1439851345, now seen corresponding path program 1 times [2022-04-06 13:37:16,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:16,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916387415] [2022-04-06 13:37:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:16,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:16,959 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 13:37:16,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:16,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916387415] [2022-04-06 13:37:16,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916387415] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:16,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:16,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 13:37:16,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510703018] [2022-04-06 13:37:16,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:16,960 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 13:37:16,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:16,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 13:37:16,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:16,961 INFO L87 Difference]: Start difference. First operand 489 states and 602 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:17,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:17,894 INFO L93 Difference]: Finished difference Result 522 states and 640 transitions. [2022-04-06 13:37:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:37:17,895 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2022-04-06 13:37:17,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:17,896 INFO L225 Difference]: With dead ends: 522 [2022-04-06 13:37:17,896 INFO L226 Difference]: Without dead ends: 501 [2022-04-06 13:37:17,897 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:17,897 INFO L913 BasicCegarLoop]: 369 mSDtfsCounter, 599 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:17,897 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 1611 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:37:17,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-04-06 13:37:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 485. [2022-04-06 13:37:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 381 states have (on average 1.2335958005249343) internal successors, (470), 388 states have internal predecessors, (470), 59 states have call successors, (59), 42 states have call predecessors, (59), 44 states have return successors, (67), 55 states have call predecessors, (67), 53 states have call successors, (67) [2022-04-06 13:37:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 596 transitions. [2022-04-06 13:37:17,935 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 596 transitions. Word has length 63 [2022-04-06 13:37:17,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:17,935 INFO L478 AbstractCegarLoop]: Abstraction has 485 states and 596 transitions. [2022-04-06 13:37:17,935 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 596 transitions. [2022-04-06 13:37:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-06 13:37:17,936 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:17,936 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] [2022-04-06 13:37:17,936 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-04-06 13:37:17,936 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1734732644, now seen corresponding path program 1 times [2022-04-06 13:37:17,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:17,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761112679] [2022-04-06 13:37:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:17,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 13:37:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:18,100 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 13:37:18,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:18,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761112679] [2022-04-06 13:37:18,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761112679] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:18,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:18,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:18,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749254139] [2022-04-06 13:37:18,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:18,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:18,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:18,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:18,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:18,101 INFO L87 Difference]: Start difference. First operand 485 states and 596 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:19,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:19,035 INFO L93 Difference]: Finished difference Result 512 states and 627 transitions. [2022-04-06 13:37:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:37:19,035 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2022-04-06 13:37:19,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:19,037 INFO L225 Difference]: With dead ends: 512 [2022-04-06 13:37:19,037 INFO L226 Difference]: Without dead ends: 490 [2022-04-06 13:37:19,037 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:19,037 INFO L913 BasicCegarLoop]: 375 mSDtfsCounter, 425 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:19,038 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1498 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:37:19,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-04-06 13:37:19,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 474. [2022-04-06 13:37:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 372 states have (on average 1.2311827956989247) internal successors, (458), 379 states have internal predecessors, (458), 58 states have call successors, (58), 42 states have call predecessors, (58), 43 states have return successors, (65), 53 states have call predecessors, (65), 52 states have call successors, (65) [2022-04-06 13:37:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 581 transitions. [2022-04-06 13:37:19,074 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 581 transitions. Word has length 64 [2022-04-06 13:37:19,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:19,074 INFO L478 AbstractCegarLoop]: Abstraction has 474 states and 581 transitions. [2022-04-06 13:37:19,074 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:19,074 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 581 transitions. [2022-04-06 13:37:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-06 13:37:19,075 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:19,075 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] [2022-04-06 13:37:19,075 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-04-06 13:37:19,075 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:19,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:19,075 INFO L85 PathProgramCache]: Analyzing trace with hash -144637562, now seen corresponding path program 1 times [2022-04-06 13:37:19,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:19,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143125416] [2022-04-06 13:37:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:19,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:19,239 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 13:37:19,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:19,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143125416] [2022-04-06 13:37:19,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143125416] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:19,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:19,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 13:37:19,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643117334] [2022-04-06 13:37:19,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:19,240 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 13:37:19,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:19,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 13:37:19,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:19,241 INFO L87 Difference]: Start difference. First operand 474 states and 581 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:20,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:20,098 INFO L93 Difference]: Finished difference Result 507 states and 619 transitions. [2022-04-06 13:37:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:37:20,099 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2022-04-06 13:37:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:20,100 INFO L225 Difference]: With dead ends: 507 [2022-04-06 13:37:20,100 INFO L226 Difference]: Without dead ends: 485 [2022-04-06 13:37:20,100 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:20,101 INFO L913 BasicCegarLoop]: 367 mSDtfsCounter, 455 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 2034 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:20,101 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1662 Invalid, 2182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2034 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:37:20,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-04-06 13:37:20,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 469. [2022-04-06 13:37:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 368 states have (on average 1.2309782608695652) internal successors, (453), 375 states have internal predecessors, (453), 57 states have call successors, (57), 42 states have call predecessors, (57), 43 states have return successors, (64), 52 states have call predecessors, (64), 51 states have call successors, (64) [2022-04-06 13:37:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 574 transitions. [2022-04-06 13:37:20,137 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 574 transitions. Word has length 64 [2022-04-06 13:37:20,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:20,137 INFO L478 AbstractCegarLoop]: Abstraction has 469 states and 574 transitions. [2022-04-06 13:37:20,137 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 574 transitions. [2022-04-06 13:37:20,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-06 13:37:20,138 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:20,138 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] [2022-04-06 13:37:20,138 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-04-06 13:37:20,138 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:20,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1120155272, now seen corresponding path program 1 times [2022-04-06 13:37:20,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:20,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428319953] [2022-04-06 13:37:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:20,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:20,314 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 13:37:20,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:20,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428319953] [2022-04-06 13:37:20,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428319953] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:20,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:20,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 13:37:20,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796594175] [2022-04-06 13:37:20,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:20,315 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 13:37:20,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 13:37:20,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:20,316 INFO L87 Difference]: Start difference. First operand 469 states and 574 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:21,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:21,275 INFO L93 Difference]: Finished difference Result 502 states and 612 transitions. [2022-04-06 13:37:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:37:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2022-04-06 13:37:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:21,277 INFO L225 Difference]: With dead ends: 502 [2022-04-06 13:37:21,277 INFO L226 Difference]: Without dead ends: 481 [2022-04-06 13:37:21,277 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:21,277 INFO L913 BasicCegarLoop]: 347 mSDtfsCounter, 291 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:21,278 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 1534 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:37:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-04-06 13:37:21,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 465. [2022-04-06 13:37:21,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 365 states have (on average 1.2301369863013698) internal successors, (449), 372 states have internal predecessors, (449), 56 states have call successors, (56), 42 states have call predecessors, (56), 43 states have return successors, (63), 51 states have call predecessors, (63), 50 states have call successors, (63) [2022-04-06 13:37:21,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 568 transitions. [2022-04-06 13:37:21,314 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 568 transitions. Word has length 64 [2022-04-06 13:37:21,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:21,315 INFO L478 AbstractCegarLoop]: Abstraction has 465 states and 568 transitions. [2022-04-06 13:37:21,315 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:21,315 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 568 transitions. [2022-04-06 13:37:21,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-06 13:37:21,316 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:21,316 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 13:37:21,316 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-04-06 13:37:21,316 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:21,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:21,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1809242026, now seen corresponding path program 1 times [2022-04-06 13:37:21,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:21,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305292270] [2022-04-06 13:37:21,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:21,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 13:37:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:21,440 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 13:37:21,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:21,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305292270] [2022-04-06 13:37:21,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305292270] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:21,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:21,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 13:37:21,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496396127] [2022-04-06 13:37:21,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:21,441 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 13:37:21,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:21,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 13:37:21,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-06 13:37:21,442 INFO L87 Difference]: Start difference. First operand 465 states and 568 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:37:22,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:22,226 INFO L93 Difference]: Finished difference Result 878 states and 1082 transitions. [2022-04-06 13:37:22,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 13:37:22,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-04-06 13:37:22,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:22,228 INFO L225 Difference]: With dead ends: 878 [2022-04-06 13:37:22,228 INFO L226 Difference]: Without dead ends: 625 [2022-04-06 13:37:22,229 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:22,229 INFO L913 BasicCegarLoop]: 408 mSDtfsCounter, 525 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:22,229 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 990 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:22,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-04-06 13:37:22,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 586. [2022-04-06 13:37:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 458 states have (on average 1.220524017467249) internal successors, (559), 467 states have internal predecessors, (559), 69 states have call successors, (69), 52 states have call predecessors, (69), 58 states have return successors, (88), 67 states have call predecessors, (88), 64 states have call successors, (88) [2022-04-06 13:37:22,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 716 transitions. [2022-04-06 13:37:22,274 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 716 transitions. Word has length 70 [2022-04-06 13:37:22,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:22,275 INFO L478 AbstractCegarLoop]: Abstraction has 586 states and 716 transitions. [2022-04-06 13:37:22,275 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 13:37:22,275 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 716 transitions. [2022-04-06 13:37:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 13:37:22,276 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:22,276 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 13:37:22,276 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-04-06 13:37:22,276 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:22,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1680266649, now seen corresponding path program 1 times [2022-04-06 13:37:22,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:22,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650072436] [2022-04-06 13:37:22,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:22,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-06 13:37:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:22,416 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 13:37:22,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:22,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650072436] [2022-04-06 13:37:22,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650072436] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:22,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:22,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 13:37:22,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066910881] [2022-04-06 13:37:22,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:22,417 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 13:37:22,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:22,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 13:37:22,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:22,417 INFO L87 Difference]: Start difference. First operand 586 states and 716 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:23,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:23,279 INFO L93 Difference]: Finished difference Result 619 states and 755 transitions. [2022-04-06 13:37:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 13:37:23,280 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 68 [2022-04-06 13:37:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:23,281 INFO L225 Difference]: With dead ends: 619 [2022-04-06 13:37:23,281 INFO L226 Difference]: Without dead ends: 576 [2022-04-06 13:37:23,281 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:23,282 INFO L913 BasicCegarLoop]: 339 mSDtfsCounter, 447 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:23,282 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1465 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:37:23,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-04-06 13:37:23,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 560. [2022-04-06 13:37:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 437 states have (on average 1.2196796338672768) internal successors, (533), 446 states have internal predecessors, (533), 66 states have call successors, (66), 50 states have call predecessors, (66), 56 states have return successors, (85), 64 states have call predecessors, (85), 61 states have call successors, (85) [2022-04-06 13:37:23,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 684 transitions. [2022-04-06 13:37:23,324 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 684 transitions. Word has length 68 [2022-04-06 13:37:23,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:23,325 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 684 transitions. [2022-04-06 13:37:23,325 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 13:37:23,325 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 684 transitions. [2022-04-06 13:37:23,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 13:37:23,325 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:23,325 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 13:37:23,326 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-04-06 13:37:23,326 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:23,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:23,326 INFO L85 PathProgramCache]: Analyzing trace with hash -815860561, now seen corresponding path program 1 times [2022-04-06 13:37:23,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:23,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496152159] [2022-04-06 13:37:23,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:23,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 13:37:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 13:37:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:37:23,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:23,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496152159] [2022-04-06 13:37:23,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496152159] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:23,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:23,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:37:23,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004519227] [2022-04-06 13:37:23,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:23,498 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:37:23,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:37:23,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:37:23,499 INFO L87 Difference]: Start difference. First operand 560 states and 684 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (9), 8 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 13:37:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:24,701 INFO L93 Difference]: Finished difference Result 589 states and 718 transitions. [2022-04-06 13:37:24,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 13:37:24,701 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (9), 8 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 71 [2022-04-06 13:37:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:24,702 INFO L225 Difference]: With dead ends: 589 [2022-04-06 13:37:24,703 INFO L226 Difference]: Without dead ends: 535 [2022-04-06 13:37:24,703 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:24,703 INFO L913 BasicCegarLoop]: 305 mSDtfsCounter, 287 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 2741 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:24,703 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 875 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2741 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 13:37:24,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-04-06 13:37:24,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 519. [2022-04-06 13:37:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 403 states have (on average 1.2133995037220844) internal successors, (489), 412 states have internal predecessors, (489), 62 states have call successors, (62), 47 states have call predecessors, (62), 53 states have return successors, (81), 60 states have call predecessors, (81), 57 states have call successors, (81) [2022-04-06 13:37:24,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 632 transitions. [2022-04-06 13:37:24,745 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 632 transitions. Word has length 71 [2022-04-06 13:37:24,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:24,745 INFO L478 AbstractCegarLoop]: Abstraction has 519 states and 632 transitions. [2022-04-06 13:37:24,745 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (9), 8 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 13:37:24,745 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 632 transitions. [2022-04-06 13:37:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-04-06 13:37:24,746 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:24,746 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:24,746 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-04-06 13:37:24,746 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:24,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:24,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1160220987, now seen corresponding path program 1 times [2022-04-06 13:37:24,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:24,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802575808] [2022-04-06 13:37:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:24,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 13:37:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-06 13:37:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:24,906 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 13:37:24,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:24,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802575808] [2022-04-06 13:37:24,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802575808] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:24,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:24,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 13:37:24,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59599698] [2022-04-06 13:37:24,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:24,907 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 13:37:24,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:24,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 13:37:24,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-04-06 13:37:24,908 INFO L87 Difference]: Start difference. First operand 519 states and 632 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 13:37:25,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:25,544 INFO L93 Difference]: Finished difference Result 840 states and 1028 transitions. [2022-04-06 13:37:25,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:37:25,544 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2022-04-06 13:37:25,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:25,547 INFO L225 Difference]: With dead ends: 840 [2022-04-06 13:37:25,548 INFO L226 Difference]: Without dead ends: 523 [2022-04-06 13:37:25,548 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:37:25,549 INFO L913 BasicCegarLoop]: 388 mSDtfsCounter, 724 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:25,550 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 999 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 13:37:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-04-06 13:37:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 501. [2022-04-06 13:37:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 389 states have (on average 1.2133676092544987) internal successors, (472), 397 states have internal predecessors, (472), 60 states have call successors, (60), 47 states have call predecessors, (60), 51 states have return successors, (70), 57 states have call predecessors, (70), 55 states have call successors, (70) [2022-04-06 13:37:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 602 transitions. [2022-04-06 13:37:25,592 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 602 transitions. Word has length 82 [2022-04-06 13:37:25,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:25,592 INFO L478 AbstractCegarLoop]: Abstraction has 501 states and 602 transitions. [2022-04-06 13:37:25,592 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 13:37:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 602 transitions. [2022-04-06 13:37:25,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-04-06 13:37:25,593 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:25,593 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:25,593 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-04-06 13:37:25,593 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:25,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:25,594 INFO L85 PathProgramCache]: Analyzing trace with hash 633938585, now seen corresponding path program 1 times [2022-04-06 13:37:25,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:25,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483634376] [2022-04-06 13:37:25,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:25,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 13:37:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-06 13:37:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:25,800 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 13:37:25,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:25,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483634376] [2022-04-06 13:37:25,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483634376] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:25,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:25,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 13:37:25,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129562496] [2022-04-06 13:37:25,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:25,801 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 13:37:25,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 13:37:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:25,801 INFO L87 Difference]: Start difference. First operand 501 states and 602 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 13:37:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:26,534 INFO L93 Difference]: Finished difference Result 839 states and 1046 transitions. [2022-04-06 13:37:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 13:37:26,534 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-04-06 13:37:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:26,536 INFO L225 Difference]: With dead ends: 839 [2022-04-06 13:37:26,536 INFO L226 Difference]: Without dead ends: 585 [2022-04-06 13:37:26,537 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-04-06 13:37:26,537 INFO L913 BasicCegarLoop]: 339 mSDtfsCounter, 455 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:26,537 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 1533 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-04-06 13:37:26,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 465. [2022-04-06 13:37:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 365 states have (on average 1.2136986301369863) internal successors, (443), 371 states have internal predecessors, (443), 53 states have call successors, (53), 41 states have call predecessors, (53), 46 states have return successors, (60), 53 states have call predecessors, (60), 49 states have call successors, (60) [2022-04-06 13:37:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 556 transitions. [2022-04-06 13:37:26,575 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 556 transitions. Word has length 83 [2022-04-06 13:37:26,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:26,575 INFO L478 AbstractCegarLoop]: Abstraction has 465 states and 556 transitions. [2022-04-06 13:37:26,576 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 13:37:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 556 transitions. [2022-04-06 13:37:26,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-06 13:37:26,576 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:26,576 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:26,577 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-04-06 13:37:26,577 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:26,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:26,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1833243044, now seen corresponding path program 1 times [2022-04-06 13:37:26,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:26,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336991588] [2022-04-06 13:37:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:26,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:26,751 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 13 [2022-04-06 13:37:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:26,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 13:37:26,767 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 13:37:26,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:26,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336991588] [2022-04-06 13:37:26,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336991588] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:26,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:26,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:37:26,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006674686] [2022-04-06 13:37:26,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:26,769 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:37:26,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:26,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:37:26,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:26,770 INFO L87 Difference]: Start difference. First operand 465 states and 556 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (11), 9 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 13:37:27,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:27,684 INFO L93 Difference]: Finished difference Result 526 states and 629 transitions. [2022-04-06 13:37:27,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:37:27,685 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (11), 9 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 88 [2022-04-06 13:37:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:27,686 INFO L225 Difference]: With dead ends: 526 [2022-04-06 13:37:27,686 INFO L226 Difference]: Without dead ends: 505 [2022-04-06 13:37:27,686 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-04-06 13:37:27,687 INFO L913 BasicCegarLoop]: 289 mSDtfsCounter, 359 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:27,687 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 1596 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 13:37:27,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-04-06 13:37:27,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 473. [2022-04-06 13:37:27,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 372 states have (on average 1.2096774193548387) internal successors, (450), 378 states have internal predecessors, (450), 53 states have call successors, (53), 41 states have call predecessors, (53), 47 states have return successors, (63), 54 states have call predecessors, (63), 49 states have call successors, (63) [2022-04-06 13:37:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 566 transitions. [2022-04-06 13:37:27,724 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 566 transitions. Word has length 88 [2022-04-06 13:37:27,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:27,724 INFO L478 AbstractCegarLoop]: Abstraction has 473 states and 566 transitions. [2022-04-06 13:37:27,724 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (11), 9 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 13:37:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 566 transitions. [2022-04-06 13:37:27,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-06 13:37:27,725 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:27,725 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:27,725 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-04-06 13:37:27,726 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:27,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:27,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2018356459, now seen corresponding path program 1 times [2022-04-06 13:37:27,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:27,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051503823] [2022-04-06 13:37:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:27,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:27,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:27,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:27,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:27,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:27,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:27,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:27,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:27,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 13:37:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:27,900 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 13:37:27,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:27,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051503823] [2022-04-06 13:37:27,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051503823] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:27,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:27,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:37:27,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276275372] [2022-04-06 13:37:27,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:27,901 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:37:27,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:27,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:37:27,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:27,902 INFO L87 Difference]: Start difference. First operand 473 states and 566 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (11), 9 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 13:37:28,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:28,640 INFO L93 Difference]: Finished difference Result 526 states and 628 transitions. [2022-04-06 13:37:28,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 13:37:28,641 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (11), 9 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 89 [2022-04-06 13:37:28,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:28,642 INFO L225 Difference]: With dead ends: 526 [2022-04-06 13:37:28,642 INFO L226 Difference]: Without dead ends: 505 [2022-04-06 13:37:28,643 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:28,643 INFO L913 BasicCegarLoop]: 305 mSDtfsCounter, 459 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:28,643 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 1691 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:28,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-04-06 13:37:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 465. [2022-04-06 13:37:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 365 states have (on average 1.210958904109589) internal successors, (442), 371 states have internal predecessors, (442), 53 states have call successors, (53), 41 states have call predecessors, (53), 46 states have return successors, (60), 53 states have call predecessors, (60), 49 states have call successors, (60) [2022-04-06 13:37:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 555 transitions. [2022-04-06 13:37:28,680 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 555 transitions. Word has length 89 [2022-04-06 13:37:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:28,680 INFO L478 AbstractCegarLoop]: Abstraction has 465 states and 555 transitions. [2022-04-06 13:37:28,680 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (11), 9 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 13:37:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 555 transitions. [2022-04-06 13:37:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-04-06 13:37:28,681 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:28,681 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:28,682 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-04-06 13:37:28,682 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:28,682 INFO L85 PathProgramCache]: Analyzing trace with hash -72110269, now seen corresponding path program 1 times [2022-04-06 13:37:28,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:28,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597917487] [2022-04-06 13:37:28,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:28,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 13:37:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-06 13:37:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:28,863 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 13:37:28,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:28,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597917487] [2022-04-06 13:37:28,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597917487] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:28,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:28,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 13:37:28,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593369206] [2022-04-06 13:37:28,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:28,864 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 13:37:28,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:28,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 13:37:28,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:28,864 INFO L87 Difference]: Start difference. First operand 465 states and 555 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-06 13:37:29,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:29,461 INFO L93 Difference]: Finished difference Result 522 states and 617 transitions. [2022-04-06 13:37:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 13:37:29,461 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2022-04-06 13:37:29,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:29,463 INFO L225 Difference]: With dead ends: 522 [2022-04-06 13:37:29,463 INFO L226 Difference]: Without dead ends: 483 [2022-04-06 13:37:29,463 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:29,463 INFO L913 BasicCegarLoop]: 274 mSDtfsCounter, 331 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:29,464 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 1063 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:37:29,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-04-06 13:37:29,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 459. [2022-04-06 13:37:29,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 361 states have (on average 1.2132963988919667) internal successors, (438), 367 states have internal predecessors, (438), 51 states have call successors, (51), 41 states have call predecessors, (51), 46 states have return successors, (57), 51 states have call predecessors, (57), 47 states have call successors, (57) [2022-04-06 13:37:29,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 546 transitions. [2022-04-06 13:37:29,503 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 546 transitions. Word has length 98 [2022-04-06 13:37:29,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:29,503 INFO L478 AbstractCegarLoop]: Abstraction has 459 states and 546 transitions. [2022-04-06 13:37:29,503 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (12), 10 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-06 13:37:29,503 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 546 transitions. [2022-04-06 13:37:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-04-06 13:37:29,504 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:29,504 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:29,504 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-04-06 13:37:29,504 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:29,504 INFO L85 PathProgramCache]: Analyzing trace with hash 221001860, now seen corresponding path program 1 times [2022-04-06 13:37:29,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:29,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20280522] [2022-04-06 13:37:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:29,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:29,515 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 13:37:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:37:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 13:37:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-06 13:37:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:29,667 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 13:37:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:29,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20280522] [2022-04-06 13:37:29,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20280522] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:29,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:29,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 13:37:29,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9101159] [2022-04-06 13:37:29,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:29,668 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 13:37:29,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:29,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 13:37:29,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-06 13:37:29,668 INFO L87 Difference]: Start difference. First operand 459 states and 546 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 6 states have internal predecessors, (74), 5 states have call successors, (10), 9 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-06 13:37:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:31,795 INFO L93 Difference]: Finished difference Result 1616 states and 1898 transitions. [2022-04-06 13:37:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-04-06 13:37:31,796 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 6 states have internal predecessors, (74), 5 states have call successors, (10), 9 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 92 [2022-04-06 13:37:31,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:31,798 INFO L225 Difference]: With dead ends: 1616 [2022-04-06 13:37:31,798 INFO L226 Difference]: Without dead ends: 1310 [2022-04-06 13:37:31,802 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=374, Invalid=1108, Unknown=0, NotChecked=0, Total=1482 [2022-04-06 13:37:31,803 INFO L913 BasicCegarLoop]: 577 mSDtfsCounter, 1523 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:31,803 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 883 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 2603 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 13:37:31,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-04-06 13:37:31,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1036. [2022-04-06 13:37:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 820 states have (on average 1.197560975609756) internal successors, (982), 833 states have internal predecessors, (982), 103 states have call successors, (103), 93 states have call predecessors, (103), 112 states have return successors, (128), 111 states have call predecessors, (128), 99 states have call successors, (128) [2022-04-06 13:37:31,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1213 transitions. [2022-04-06 13:37:31,900 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1213 transitions. Word has length 92 [2022-04-06 13:37:31,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:31,900 INFO L478 AbstractCegarLoop]: Abstraction has 1036 states and 1213 transitions. [2022-04-06 13:37:31,900 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 6 states have internal predecessors, (74), 5 states have call successors, (10), 9 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-04-06 13:37:31,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1213 transitions. [2022-04-06 13:37:31,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-04-06 13:37:31,901 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:31,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:37:31,901 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-04-06 13:37:31,902 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:31,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:31,902 INFO L85 PathProgramCache]: Analyzing trace with hash 457485908, now seen corresponding path program 1 times [2022-04-06 13:37:31,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:31,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590382705] [2022-04-06 13:37:31,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:31,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 13:37:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-06 13:37:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:32,103 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 13:37:32,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:32,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590382705] [2022-04-06 13:37:32,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590382705] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:32,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:32,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:37:32,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374113776] [2022-04-06 13:37:32,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:32,104 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:37:32,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:32,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:37:32,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:37:32,104 INFO L87 Difference]: Start difference. First operand 1036 states and 1213 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-04-06 13:37:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:33,392 INFO L93 Difference]: Finished difference Result 1962 states and 2306 transitions. [2022-04-06 13:37:33,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-06 13:37:33,392 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-04-06 13:37:33,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:33,400 INFO L225 Difference]: With dead ends: 1962 [2022-04-06 13:37:33,400 INFO L226 Difference]: Without dead ends: 1897 [2022-04-06 13:37:33,401 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2022-04-06 13:37:33,401 INFO L913 BasicCegarLoop]: 461 mSDtfsCounter, 698 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:33,401 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 2058 Invalid, 2268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 13:37:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2022-04-06 13:37:33,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1000. [2022-04-06 13:37:33,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 792 states have (on average 1.196969696969697) internal successors, (948), 803 states have internal predecessors, (948), 97 states have call successors, (97), 91 states have call predecessors, (97), 110 states have return successors, (122), 105 states have call predecessors, (122), 93 states have call successors, (122) [2022-04-06 13:37:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1167 transitions. [2022-04-06 13:37:33,525 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1167 transitions. Word has length 99 [2022-04-06 13:37:33,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:33,525 INFO L478 AbstractCegarLoop]: Abstraction has 1000 states and 1167 transitions. [2022-04-06 13:37:33,525 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-04-06 13:37:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1167 transitions. [2022-04-06 13:37:33,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-04-06 13:37:33,527 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:33,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:37:33,527 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-04-06 13:37:33,527 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:33,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:33,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1879720238, now seen corresponding path program 1 times [2022-04-06 13:37:33,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:33,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830858346] [2022-04-06 13:37:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:33,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 13:37:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 13:37:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 13:37:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:33,700 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 13:37:33,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:33,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830858346] [2022-04-06 13:37:33,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830858346] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:33,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:33,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 13:37:33,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132511869] [2022-04-06 13:37:33,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:33,702 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 13:37:33,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:33,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 13:37:33,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-04-06 13:37:33,702 INFO L87 Difference]: Start difference. First operand 1000 states and 1167 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-06 13:37:34,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:34,657 INFO L93 Difference]: Finished difference Result 1010 states and 1176 transitions. [2022-04-06 13:37:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 13:37:34,657 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 93 [2022-04-06 13:37:34,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:34,659 INFO L225 Difference]: With dead ends: 1010 [2022-04-06 13:37:34,659 INFO L226 Difference]: Without dead ends: 804 [2022-04-06 13:37:34,660 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:34,660 INFO L913 BasicCegarLoop]: 227 mSDtfsCounter, 602 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:34,660 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 568 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 13:37:34,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-04-06 13:37:34,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 796. [2022-04-06 13:37:34,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 624 states have (on average 1.2003205128205128) internal successors, (749), 633 states have internal predecessors, (749), 81 states have call successors, (81), 76 states have call predecessors, (81), 90 states have return successors, (100), 86 states have call predecessors, (100), 78 states have call successors, (100) [2022-04-06 13:37:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 930 transitions. [2022-04-06 13:37:34,745 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 930 transitions. Word has length 93 [2022-04-06 13:37:34,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:34,746 INFO L478 AbstractCegarLoop]: Abstraction has 796 states and 930 transitions. [2022-04-06 13:37:34,746 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-06 13:37:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 930 transitions. [2022-04-06 13:37:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-04-06 13:37:34,747 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:34,747 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:37:34,747 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-04-06 13:37:34,747 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:34,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:34,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1426092271, now seen corresponding path program 1 times [2022-04-06 13:37:34,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:34,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851922578] [2022-04-06 13:37:34,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:34,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-06 13:37:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:34,995 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 13:37:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:34,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851922578] [2022-04-06 13:37:34,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851922578] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:34,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:34,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:37:34,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785599968] [2022-04-06 13:37:34,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:34,996 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:37:34,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:34,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:37:34,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:34,996 INFO L87 Difference]: Start difference. First operand 796 states and 930 transitions. Second operand has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 13:37:35,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:35,611 INFO L93 Difference]: Finished difference Result 1048 states and 1235 transitions. [2022-04-06 13:37:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 13:37:35,612 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2022-04-06 13:37:35,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:35,613 INFO L225 Difference]: With dead ends: 1048 [2022-04-06 13:37:35,613 INFO L226 Difference]: Without dead ends: 834 [2022-04-06 13:37:35,614 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-04-06 13:37:35,617 INFO L913 BasicCegarLoop]: 179 mSDtfsCounter, 337 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:35,617 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 1069 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 13:37:35,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-04-06 13:37:35,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 814. [2022-04-06 13:37:35,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 640 states have (on average 1.1859375) internal successors, (759), 651 states have internal predecessors, (759), 83 states have call successors, (83), 76 states have call predecessors, (83), 90 states have return successors, (100), 86 states have call predecessors, (100), 78 states have call successors, (100) [2022-04-06 13:37:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 942 transitions. [2022-04-06 13:37:35,708 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 942 transitions. Word has length 104 [2022-04-06 13:37:35,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:35,708 INFO L478 AbstractCegarLoop]: Abstraction has 814 states and 942 transitions. [2022-04-06 13:37:35,708 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (14), 12 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 13:37:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 942 transitions. [2022-04-06 13:37:35,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-04-06 13:37:35,709 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:35,709 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:37:35,709 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-04-06 13:37:35,709 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:35,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:35,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1466232135, now seen corresponding path program 1 times [2022-04-06 13:37:35,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:35,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643346621] [2022-04-06 13:37:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:35,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 13:37:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-06 13:37:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-04-06 13:37:35,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:35,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643346621] [2022-04-06 13:37:35,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643346621] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:35,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:35,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 13:37:35,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082419686] [2022-04-06 13:37:35,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:35,897 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 13:37:35,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:35,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 13:37:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-04-06 13:37:35,897 INFO L87 Difference]: Start difference. First operand 814 states and 942 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) [2022-04-06 13:37:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:36,384 INFO L93 Difference]: Finished difference Result 867 states and 993 transitions. [2022-04-06 13:37:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 13:37:36,384 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) Word has length 113 [2022-04-06 13:37:36,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:36,386 INFO L225 Difference]: With dead ends: 867 [2022-04-06 13:37:36,386 INFO L226 Difference]: Without dead ends: 717 [2022-04-06 13:37:36,386 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-04-06 13:37:36,386 INFO L913 BasicCegarLoop]: 181 mSDtfsCounter, 153 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:36,386 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 897 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 13:37:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-04-06 13:37:36,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 449. [2022-04-06 13:37:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 354 states have (on average 1.1440677966101696) internal successors, (405), 358 states have internal predecessors, (405), 46 states have call successors, (46), 46 states have call predecessors, (46), 48 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2022-04-06 13:37:36,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 499 transitions. [2022-04-06 13:37:36,444 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 499 transitions. Word has length 113 [2022-04-06 13:37:36,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:36,444 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 499 transitions. [2022-04-06 13:37:36,444 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) [2022-04-06 13:37:36,444 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 499 transitions. [2022-04-06 13:37:36,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-04-06 13:37:36,445 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:36,445 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:36,445 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-04-06 13:37:36,445 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:36,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:36,446 INFO L85 PathProgramCache]: Analyzing trace with hash -165727650, now seen corresponding path program 1 times [2022-04-06 13:37:36,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:36,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435823251] [2022-04-06 13:37:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:36,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-06 13:37:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-06 13:37:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:36,661 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 13:37:36,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:36,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435823251] [2022-04-06 13:37:36,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435823251] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:36,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:36,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:37:36,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880545716] [2022-04-06 13:37:36,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:36,661 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:37:36,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:37:36,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:37:36,662 INFO L87 Difference]: Start difference. First operand 449 states and 499 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 13:37:37,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:37,119 INFO L93 Difference]: Finished difference Result 520 states and 576 transitions. [2022-04-06 13:37:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:37:37,120 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2022-04-06 13:37:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:37,121 INFO L225 Difference]: With dead ends: 520 [2022-04-06 13:37:37,121 INFO L226 Difference]: Without dead ends: 477 [2022-04-06 13:37:37,121 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:37,122 INFO L913 BasicCegarLoop]: 175 mSDtfsCounter, 183 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:37,122 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 701 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 13:37:37,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-04-06 13:37:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 457. [2022-04-06 13:37:37,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 360 states have (on average 1.1416666666666666) internal successors, (411), 364 states have internal predecessors, (411), 46 states have call successors, (46), 46 states have call predecessors, (46), 50 states have return successors, (50), 46 states have call predecessors, (50), 44 states have call successors, (50) [2022-04-06 13:37:37,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 507 transitions. [2022-04-06 13:37:37,177 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 507 transitions. Word has length 120 [2022-04-06 13:37:37,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:37,178 INFO L478 AbstractCegarLoop]: Abstraction has 457 states and 507 transitions. [2022-04-06 13:37:37,178 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 13:37:37,178 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 507 transitions. [2022-04-06 13:37:37,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-04-06 13:37:37,178 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:37,179 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:37,179 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-04-06 13:37:37,179 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:37,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:37,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1709722050, now seen corresponding path program 1 times [2022-04-06 13:37:37,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:37,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131313369] [2022-04-06 13:37:37,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:37,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-06 13:37:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-06 13:37:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,388 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 13:37:37,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:37,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131313369] [2022-04-06 13:37:37,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131313369] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:37,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:37,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:37:37,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756414521] [2022-04-06 13:37:37,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:37,388 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:37:37,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:37:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:37:37,389 INFO L87 Difference]: Start difference. First operand 457 states and 507 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 13:37:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:37,806 INFO L93 Difference]: Finished difference Result 612 states and 686 transitions. [2022-04-06 13:37:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:37:37,806 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2022-04-06 13:37:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:37,807 INFO L225 Difference]: With dead ends: 612 [2022-04-06 13:37:37,807 INFO L226 Difference]: Without dead ends: 469 [2022-04-06 13:37:37,808 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:37,808 INFO L913 BasicCegarLoop]: 174 mSDtfsCounter, 274 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:37,808 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 742 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 13:37:37,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-04-06 13:37:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 457. [2022-04-06 13:37:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 360 states have (on average 1.136111111111111) internal successors, (409), 364 states have internal predecessors, (409), 46 states have call successors, (46), 46 states have call predecessors, (46), 50 states have return successors, (50), 46 states have call predecessors, (50), 44 states have call successors, (50) [2022-04-06 13:37:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 505 transitions. [2022-04-06 13:37:37,863 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 505 transitions. Word has length 120 [2022-04-06 13:37:37,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:37,864 INFO L478 AbstractCegarLoop]: Abstraction has 457 states and 505 transitions. [2022-04-06 13:37:37,864 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 12 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 13:37:37,864 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 505 transitions. [2022-04-06 13:37:37,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-04-06 13:37:37,864 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:37,865 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:37,865 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-04-06 13:37:37,865 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash -232533850, now seen corresponding path program 1 times [2022-04-06 13:37:37,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:37,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762945558] [2022-04-06 13:37:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:37,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:37,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-06 13:37:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-06 13:37:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-06 13:37:38,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:38,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762945558] [2022-04-06 13:37:38,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762945558] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:38,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:38,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-06 13:37:38,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812937158] [2022-04-06 13:37:38,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:38,246 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-06 13:37:38,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:38,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-06 13:37:38,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-04-06 13:37:38,247 INFO L87 Difference]: Start difference. First operand 457 states and 505 transitions. Second operand has 25 states, 25 states have (on average 4.04) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 13:37:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:39,099 INFO L93 Difference]: Finished difference Result 584 states and 664 transitions. [2022-04-06 13:37:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-06 13:37:39,099 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 150 [2022-04-06 13:37:39,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:39,100 INFO L225 Difference]: With dead ends: 584 [2022-04-06 13:37:39,101 INFO L226 Difference]: Without dead ends: 531 [2022-04-06 13:37:39,101 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-04-06 13:37:39,101 INFO L913 BasicCegarLoop]: 167 mSDtfsCounter, 284 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:39,101 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 1428 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:39,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-04-06 13:37:39,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 491. [2022-04-06 13:37:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 390 states have (on average 1.146153846153846) internal successors, (447), 394 states have internal predecessors, (447), 46 states have call successors, (46), 46 states have call predecessors, (46), 54 states have return successors, (54), 50 states have call predecessors, (54), 44 states have call successors, (54) [2022-04-06 13:37:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 547 transitions. [2022-04-06 13:37:39,161 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 547 transitions. Word has length 150 [2022-04-06 13:37:39,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:39,161 INFO L478 AbstractCegarLoop]: Abstraction has 491 states and 547 transitions. [2022-04-06 13:37:39,161 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 13:37:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 547 transitions. [2022-04-06 13:37:39,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-04-06 13:37:39,162 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:39,162 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:37:39,162 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-04-06 13:37:39,162 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:39,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:39,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2130033855, now seen corresponding path program 1 times [2022-04-06 13:37:39,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:39,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494929791] [2022-04-06 13:37:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:39,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-06 13:37:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 13:37:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-04-06 13:37:39,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:39,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494929791] [2022-04-06 13:37:39,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494929791] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:39,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:39,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 13:37:39,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247473882] [2022-04-06 13:37:39,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:39,415 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 13:37:39,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:39,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 13:37:39,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-04-06 13:37:39,416 INFO L87 Difference]: Start difference. First operand 491 states and 547 transitions. Second operand has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (16), 12 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 13:37:39,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:39,952 INFO L93 Difference]: Finished difference Result 664 states and 748 transitions. [2022-04-06 13:37:39,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 13:37:39,953 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (16), 12 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 151 [2022-04-06 13:37:39,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:39,954 INFO L225 Difference]: With dead ends: 664 [2022-04-06 13:37:39,954 INFO L226 Difference]: Without dead ends: 519 [2022-04-06 13:37:39,954 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-04-06 13:37:39,954 INFO L913 BasicCegarLoop]: 186 mSDtfsCounter, 284 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:39,955 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 1190 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 13:37:39,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-04-06 13:37:40,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 491. [2022-04-06 13:37:40,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 390 states have (on average 1.141025641025641) internal successors, (445), 394 states have internal predecessors, (445), 46 states have call successors, (46), 46 states have call predecessors, (46), 54 states have return successors, (54), 50 states have call predecessors, (54), 44 states have call successors, (54) [2022-04-06 13:37:40,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 545 transitions. [2022-04-06 13:37:40,012 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 545 transitions. Word has length 151 [2022-04-06 13:37:40,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:40,012 INFO L478 AbstractCegarLoop]: Abstraction has 491 states and 545 transitions. [2022-04-06 13:37:40,012 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (16), 12 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 13:37:40,012 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 545 transitions. [2022-04-06 13:37:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-04-06 13:37:40,013 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:40,013 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:40,013 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-04-06 13:37:40,013 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:40,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1959969322, now seen corresponding path program 1 times [2022-04-06 13:37:40,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:40,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193315758] [2022-04-06 13:37:40,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:40,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-06 13:37:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-06 13:37:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-06 13:37:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-04-06 13:37:40,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:40,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193315758] [2022-04-06 13:37:40,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193315758] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:40,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:40,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 13:37:40,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102822419] [2022-04-06 13:37:40,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:40,330 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 13:37:40,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:40,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 13:37:40,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-04-06 13:37:40,330 INFO L87 Difference]: Start difference. First operand 491 states and 545 transitions. Second operand has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-06 13:37:41,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:41,089 INFO L93 Difference]: Finished difference Result 556 states and 624 transitions. [2022-04-06 13:37:41,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 13:37:41,090 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) Word has length 153 [2022-04-06 13:37:41,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:41,091 INFO L225 Difference]: With dead ends: 556 [2022-04-06 13:37:41,091 INFO L226 Difference]: Without dead ends: 491 [2022-04-06 13:37:41,091 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-04-06 13:37:41,091 INFO L913 BasicCegarLoop]: 167 mSDtfsCounter, 144 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:41,092 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 1170 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:41,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-04-06 13:37:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 479. [2022-04-06 13:37:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 382 states have (on average 1.1282722513089005) internal successors, (431), 386 states have internal predecessors, (431), 44 states have call successors, (44), 44 states have call predecessors, (44), 52 states have return successors, (52), 48 states have call predecessors, (52), 42 states have call successors, (52) [2022-04-06 13:37:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 527 transitions. [2022-04-06 13:37:41,149 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 527 transitions. Word has length 153 [2022-04-06 13:37:41,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:41,149 INFO L478 AbstractCegarLoop]: Abstraction has 479 states and 527 transitions. [2022-04-06 13:37:41,149 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (17), 12 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-06 13:37:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 527 transitions. [2022-04-06 13:37:41,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-04-06 13:37:41,150 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:41,151 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:41,151 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-04-06 13:37:41,151 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:41,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:41,151 INFO L85 PathProgramCache]: Analyzing trace with hash -249606396, now seen corresponding path program 1 times [2022-04-06 13:37:41,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:41,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073025582] [2022-04-06 13:37:41,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:41,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-06 13:37:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-06 13:37:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-06 13:37:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-04-06 13:37:41,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:41,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073025582] [2022-04-06 13:37:41,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073025582] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:41,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:41,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 13:37:41,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956107260] [2022-04-06 13:37:41,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:41,382 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 13:37:41,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:41,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 13:37:41,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-04-06 13:37:41,382 INFO L87 Difference]: Start difference. First operand 479 states and 527 transitions. Second operand has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 5 states have internal predecessors, (101), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-04-06 13:37:41,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:41,813 INFO L93 Difference]: Finished difference Result 584 states and 642 transitions. [2022-04-06 13:37:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:37:41,813 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 5 states have internal predecessors, (101), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 158 [2022-04-06 13:37:41,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:41,814 INFO L225 Difference]: With dead ends: 584 [2022-04-06 13:37:41,814 INFO L226 Difference]: Without dead ends: 451 [2022-04-06 13:37:41,815 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2022-04-06 13:37:41,815 INFO L913 BasicCegarLoop]: 146 mSDtfsCounter, 320 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:41,815 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 587 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 13:37:41,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-04-06 13:37:41,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 423. [2022-04-06 13:37:41,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 334 states have (on average 1.1107784431137724) internal successors, (371), 338 states have internal predecessors, (371), 42 states have call successors, (42), 42 states have call predecessors, (42), 46 states have return successors, (46), 42 states have call predecessors, (46), 40 states have call successors, (46) [2022-04-06 13:37:41,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 459 transitions. [2022-04-06 13:37:41,879 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 459 transitions. Word has length 158 [2022-04-06 13:37:41,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:41,879 INFO L478 AbstractCegarLoop]: Abstraction has 423 states and 459 transitions. [2022-04-06 13:37:41,879 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 5 states have internal predecessors, (101), 4 states have call successors, (17), 12 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-04-06 13:37:41,879 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 459 transitions. [2022-04-06 13:37:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-04-06 13:37:41,880 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:41,880 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:37:41,880 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-04-06 13:37:41,880 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2090831252, now seen corresponding path program 1 times [2022-04-06 13:37:41,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:41,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597601427] [2022-04-06 13:37:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:41,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-06 13:37:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-06 13:37:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-06 13:37:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-06 13:37:42,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:42,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597601427] [2022-04-06 13:37:42,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597601427] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:42,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:42,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 13:37:42,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744463363] [2022-04-06 13:37:42,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:42,138 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 13:37:42,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:42,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 13:37:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-04-06 13:37:42,139 INFO L87 Difference]: Start difference. First operand 423 states and 459 transitions. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-06 13:37:42,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:42,484 INFO L93 Difference]: Finished difference Result 536 states and 584 transitions. [2022-04-06 13:37:42,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 13:37:42,485 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 160 [2022-04-06 13:37:42,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:42,486 INFO L225 Difference]: With dead ends: 536 [2022-04-06 13:37:42,486 INFO L226 Difference]: Without dead ends: 381 [2022-04-06 13:37:42,486 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-04-06 13:37:42,486 INFO L913 BasicCegarLoop]: 149 mSDtfsCounter, 196 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:42,486 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 730 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 13:37:42,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-04-06 13:37:42,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-04-06 13:37:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 298 states have (on average 1.0973154362416107) internal successors, (327), 300 states have internal predecessors, (327), 40 states have call successors, (40), 40 states have call predecessors, (40), 42 states have return successors, (42), 40 states have call predecessors, (42), 38 states have call successors, (42) [2022-04-06 13:37:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 409 transitions. [2022-04-06 13:37:42,529 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 409 transitions. Word has length 160 [2022-04-06 13:37:42,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:42,529 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 409 transitions. [2022-04-06 13:37:42,529 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-06 13:37:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 409 transitions. [2022-04-06 13:37:42,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-04-06 13:37:42,530 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:42,530 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:37:42,530 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-04-06 13:37:42,530 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:42,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:42,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1980774501, now seen corresponding path program 1 times [2022-04-06 13:37:42,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:42,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547051176] [2022-04-06 13:37:42,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:42,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-06 13:37:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 13:37:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 13:37:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-04-06 13:37:42,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:42,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547051176] [2022-04-06 13:37:42,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547051176] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:42,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:42,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 13:37:42,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305725292] [2022-04-06 13:37:42,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:42,829 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 13:37:42,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:42,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 13:37:42,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-04-06 13:37:42,829 INFO L87 Difference]: Start difference. First operand 381 states and 409 transitions. Second operand has 20 states, 20 states have (on average 5.35) internal successors, (107), 8 states have internal predecessors, (107), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-06 13:37:43,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:43,820 INFO L93 Difference]: Finished difference Result 762 states and 821 transitions. [2022-04-06 13:37:43,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-04-06 13:37:43,820 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.35) internal successors, (107), 8 states have internal predecessors, (107), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 161 [2022-04-06 13:37:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:43,822 INFO L225 Difference]: With dead ends: 762 [2022-04-06 13:37:43,822 INFO L226 Difference]: Without dead ends: 387 [2022-04-06 13:37:43,822 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=387, Invalid=1965, Unknown=0, NotChecked=0, Total=2352 [2022-04-06 13:37:43,823 INFO L913 BasicCegarLoop]: 139 mSDtfsCounter, 435 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:43,823 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 597 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 13:37:43,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-04-06 13:37:43,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 381. [2022-04-06 13:37:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 298 states have (on average 1.0939597315436242) internal successors, (326), 300 states have internal predecessors, (326), 40 states have call successors, (40), 40 states have call predecessors, (40), 42 states have return successors, (42), 40 states have call predecessors, (42), 38 states have call successors, (42) [2022-04-06 13:37:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 408 transitions. [2022-04-06 13:37:43,866 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 408 transitions. Word has length 161 [2022-04-06 13:37:43,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:43,866 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 408 transitions. [2022-04-06 13:37:43,866 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.35) internal successors, (107), 8 states have internal predecessors, (107), 5 states have call successors, (17), 13 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-06 13:37:43,866 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 408 transitions. [2022-04-06 13:37:43,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-04-06 13:37:43,867 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:37:43,867 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:37:43,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-04-06 13:37:43,867 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:37:43,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:37:43,868 INFO L85 PathProgramCache]: Analyzing trace with hash -628292860, now seen corresponding path program 1 times [2022-04-06 13:37:43,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:37:43,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284196130] [2022-04-06 13:37:43,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:37:43,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:37:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:37:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 13:37:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 13:37:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 13:37:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 13:37:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 13:37:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 13:37:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 13:37:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 13:37:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 13:37:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 13:37:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-06 13:37:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-06 13:37:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-06 13:37:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:37:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-04-06 13:37:44,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:37:44,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284196130] [2022-04-06 13:37:44,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284196130] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:37:44,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:37:44,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-04-06 13:37:44,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85795021] [2022-04-06 13:37:44,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:37:44,243 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-06 13:37:44,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:37:44,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-06 13:37:44,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-04-06 13:37:44,243 INFO L87 Difference]: Start difference. First operand 381 states and 408 transitions. Second operand has 25 states, 25 states have (on average 4.28) internal successors, (107), 11 states have internal predecessors, (107), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-06 13:37:45,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:37:45,113 INFO L93 Difference]: Finished difference Result 387 states and 416 transitions. [2022-04-06 13:37:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-04-06 13:37:45,113 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.28) internal successors, (107), 11 states have internal predecessors, (107), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 161 [2022-04-06 13:37:45,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:37:45,113 INFO L225 Difference]: With dead ends: 387 [2022-04-06 13:37:45,113 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 13:37:45,114 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=1715, Unknown=0, NotChecked=0, Total=1980 [2022-04-06 13:37:45,115 INFO L913 BasicCegarLoop]: 126 mSDtfsCounter, 432 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 13:37:45,115 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 673 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 13:37:45,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 13:37:45,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 13:37:45,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 13:37:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 13:37:45,116 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2022-04-06 13:37:45,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:37:45,116 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 13:37:45,116 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.28) internal successors, (107), 11 states have internal predecessors, (107), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2022-04-06 13:37:45,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 13:37:45,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 13:37:45,118 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 13:37:45,121 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-04-06 13:37:45,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.