/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 19:43:55,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 19:43:55,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 19:43:55,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-14 19:43:55,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-14 19:43:55,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-14 19:43:55,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-14 19:43:55,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-14 19:43:55,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-14 19:43:55,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-14 19:43:55,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-14 19:43:55,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-14 19:43:55,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 19:43:55,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 19:43:55,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 19:43:55,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 19:43:55,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 19:43:55,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 19:43:55,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 19:43:55,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 19:43:55,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 19:43:55,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 19:43:55,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 19:43:55,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 19:43:55,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-14 19:43:55,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-14 19:43:55,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-14 19:43:55,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-14 19:43:55,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-14 19:43:55,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-02-14 19:43:55,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 19:43:55,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 19:43:55,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 19:43:55,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-14 19:43:55,128 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 19:43:55,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 19:43:55,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-14 19:43:55,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-14 19:43:55,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-14 19:43:55,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-14 19:43:55,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-14 19:43:55,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-14 19:43:55,130 INFO L138 SettingsManager]: * Use SBE=true [2022-02-14 19:43:55,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 19:43:55,131 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 19:43:55,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 19:43:55,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 19:43:55,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 19:43:55,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 19:43:55,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 19:43:55,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 19:43:55,132 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 19:43:55,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 19:43:55,132 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 19:43:55,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 19:43:55,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 19:43:55,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 19:43:55,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 19:43:55,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 19:43:55,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 19:43:55,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-14 19:43:55,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-14 19:43:55,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 19:43:55,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-14 19:43:55,134 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-14 19:43:55,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-14 19:43:55,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-14 19:43:55,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 19:43:55,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 19:43:55,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 19:43:55,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 19:43:55,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 19:43:55,353 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 19:43:55,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2022-02-14 19:43:55,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c03d4662/0f9e62fa6b31427caebaaa6a402ef5f5/FLAGf8bcfa797 [2022-02-14 19:43:55,857 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 19:43:55,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2022-02-14 19:43:55,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c03d4662/0f9e62fa6b31427caebaaa6a402ef5f5/FLAGf8bcfa797 [2022-02-14 19:43:56,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c03d4662/0f9e62fa6b31427caebaaa6a402ef5f5 [2022-02-14 19:43:56,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 19:43:56,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-14 19:43:56,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 19:43:56,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 19:43:56,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 19:43:56,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 07:43:56" (1/1) ... [2022-02-14 19:43:56,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb40ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:43:56, skipping insertion in model container [2022-02-14 19:43:56,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 07:43:56" (1/1) ... [2022-02-14 19:43:56,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 19:43:56,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 19:43:56,667 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] [2022-02-14 19:43:56,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 19:43:56,675 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 19:43:56,758 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] [2022-02-14 19:43:56,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 19:43:56,774 INFO L208 MainTranslator]: Completed translation [2022-02-14 19:43:56,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:43:56 WrapperNode [2022-02-14 19:43:56,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 19:43:56,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 19:43:56,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 19:43:56,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 19:43:56,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:43:56" (1/1) ... [2022-02-14 19:43:56,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:43:56" (1/1) ... [2022-02-14 19:43:56,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:43:56" (1/1) ... [2022-02-14 19:43:56,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:43:56" (1/1) ... [2022-02-14 19:43:56,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:43:56" (1/1) ... [2022-02-14 19:43:56,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:43:56" (1/1) ... [2022-02-14 19:43:56,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:43:56" (1/1) ... [2022-02-14 19:43:56,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 19:43:56,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 19:43:56,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 19:43:56,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 19:43:56,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:43:56" (1/1) ... [2022-02-14 19:43:56,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 19:43:56,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 19:43:56,899 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) [2022-02-14 19:43:56,906 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 [2022-02-14 19:43:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 19:43:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 19:43:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 19:43:56,933 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-14 19:43:56,933 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-02-14 19:43:56,934 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-02-14 19:43:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-02-14 19:43:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-02-14 19:43:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-02-14 19:43:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-02-14 19:43:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-02-14 19:43:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-14 19:43:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 19:43:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-14 19:43:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-14 19:43:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-14 19:43:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-14 19:43:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-02-14 19:43:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-14 19:43:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-14 19:43:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-14 19:43:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-14 19:43:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-14 19:43:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-14 19:43:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-14 19:43:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-14 19:43:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-14 19:43:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-14 19:43:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-14 19:43:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-14 19:43:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-02-14 19:43:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-02-14 19:43:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-02-14 19:43:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-02-14 19:43:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-14 19:43:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-14 19:43:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-14 19:43:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-02-14 19:43:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-14 19:43:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 19:43:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-14 19:43:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 19:43:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 19:43:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 19:43:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 19:43:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 19:43:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 19:43:57,137 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 19:43:57,139 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 19:43:57,171 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,194 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-14 19:43:57,194 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-14 19:43:57,199 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,205 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-14 19:43:57,205 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-14 19:43:57,208 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,304 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-14 19:43:57,304 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-14 19:43:57,306 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,354 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2022-02-14 19:43:57,354 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2022-02-14 19:43:57,371 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,393 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-14 19:43:57,393 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-14 19:43:57,477 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,486 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-14 19:43:57,486 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-14 19:43:57,486 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,494 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-14 19:43:57,494 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-14 19:43:57,494 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,503 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-14 19:43:57,503 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-14 19:43:57,543 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,566 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-14 19:43:57,566 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-14 19:43:57,570 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,663 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-02-14 19:43:57,663 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-02-14 19:43:57,698 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,701 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-14 19:43:57,701 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-14 19:43:57,701 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,712 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-14 19:43:57,712 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-14 19:43:57,713 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-14 19:43:57,718 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-14 19:43:57,718 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-14 19:43:57,726 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 19:43:57,738 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 19:43:57,738 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 19:43:57,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 07:43:57 BoogieIcfgContainer [2022-02-14 19:43:57,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 19:43:57,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 19:43:57,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 19:43:57,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 19:43:57,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 07:43:56" (1/3) ... [2022-02-14 19:43:57,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba8c5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 07:43:57, skipping insertion in model container [2022-02-14 19:43:57,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 07:43:56" (2/3) ... [2022-02-14 19:43:57,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba8c5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 07:43:57, skipping insertion in model container [2022-02-14 19:43:57,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 07:43:57" (3/3) ... [2022-02-14 19:43:57,750 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.c [2022-02-14 19:43:57,755 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-14 19:43:57,755 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 19:43:57,793 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 19:43:57,800 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-14 19:43:57,802 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 19:43:57,830 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) [2022-02-14 19:43:57,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-14 19:43:57,834 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:43:57,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:43:57,835 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:43:57,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:43:57,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1386555085, now seen corresponding path program 1 times [2022-02-14 19:43:57,845 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:43:57,845 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143530673] [2022-02-14 19:43:57,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:43:57,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:43:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:43:58,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:43:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:43:58,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:43:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:43:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:43:58,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:43:58,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143530673] [2022-02-14 19:43:58,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143530673] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:43:58,161 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:43:58,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-14 19:43:58,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986010442] [2022-02-14 19:43:58,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:43:58,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 19:43:58,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:43:58,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 19:43:58,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-14 19:43:58,202 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) [2022-02-14 19:43:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:43:59,349 INFO L93 Difference]: Finished difference Result 666 states and 978 transitions. [2022-02-14 19:43:59,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-14 19:43:59,352 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 [2022-02-14 19:43:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:43:59,365 INFO L225 Difference]: With dead ends: 666 [2022-02-14 19:43:59,366 INFO L226 Difference]: Without dead ends: 422 [2022-02-14 19:43:59,371 INFO L932 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 [2022-02-14 19:43:59,373 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 408 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:43:59,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 735 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-14 19:43:59,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-02-14 19:43:59,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 380. [2022-02-14 19:43:59,440 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) [2022-02-14 19:43:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 523 transitions. [2022-02-14 19:43:59,444 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 523 transitions. Word has length 20 [2022-02-14 19:43:59,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:43:59,444 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 523 transitions. [2022-02-14 19:43:59,445 INFO L471 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) [2022-02-14 19:43:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 523 transitions. [2022-02-14 19:43:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-14 19:43:59,447 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:43:59,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:43:59,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 19:43:59,448 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:43:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:43:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1836211626, now seen corresponding path program 1 times [2022-02-14 19:43:59,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:43:59,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111713989] [2022-02-14 19:43:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:43:59,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:43:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:43:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:43:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:43:59,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:43:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:43:59,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:43:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:43:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:43:59,617 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:43:59,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111713989] [2022-02-14 19:43:59,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111713989] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:43:59,618 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:43:59,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-14 19:43:59,618 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932523787] [2022-02-14 19:43:59,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:43:59,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-14 19:43:59,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:43:59,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-14 19:43:59,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-14 19:43:59,620 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) [2022-02-14 19:44:00,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:00,972 INFO L93 Difference]: Finished difference Result 747 states and 1022 transitions. [2022-02-14 19:44:00,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 19:44:00,973 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 [2022-02-14 19:44:00,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:00,979 INFO L225 Difference]: With dead ends: 747 [2022-02-14 19:44:00,980 INFO L226 Difference]: Without dead ends: 584 [2022-02-14 19:44:00,981 INFO L932 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 [2022-02-14 19:44:00,981 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 717 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:00,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 892 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-14 19:44:00,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-02-14 19:44:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 525. [2022-02-14 19:44:01,017 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) [2022-02-14 19:44:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 716 transitions. [2022-02-14 19:44:01,020 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 716 transitions. Word has length 25 [2022-02-14 19:44:01,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:01,020 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 716 transitions. [2022-02-14 19:44:01,021 INFO L471 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) [2022-02-14 19:44:01,021 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 716 transitions. [2022-02-14 19:44:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-14 19:44:01,026 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:01,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:01,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-14 19:44:01,026 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:01,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:01,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1775067862, now seen corresponding path program 1 times [2022-02-14 19:44:01,027 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:01,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860672740] [2022-02-14 19:44:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:01,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:01,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:01,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:01,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860672740] [2022-02-14 19:44:01,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860672740] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:01,167 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:01,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-14 19:44:01,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606371187] [2022-02-14 19:44:01,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:01,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-14 19:44:01,168 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:01,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-14 19:44:01,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-14 19:44:01,169 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) [2022-02-14 19:44:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:01,854 INFO L93 Difference]: Finished difference Result 695 states and 934 transitions. [2022-02-14 19:44:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 19:44:01,854 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 [2022-02-14 19:44:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:01,857 INFO L225 Difference]: With dead ends: 695 [2022-02-14 19:44:01,858 INFO L226 Difference]: Without dead ends: 676 [2022-02-14 19:44:01,858 INFO L932 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 [2022-02-14 19:44:01,859 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 946 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2022-02-14 19:44:01,859 INFO L934 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] [2022-02-14 19:44:01,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-02-14 19:44:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 583. [2022-02-14 19:44:01,888 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) [2022-02-14 19:44:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 790 transitions. [2022-02-14 19:44:01,890 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 790 transitions. Word has length 31 [2022-02-14 19:44:01,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:01,891 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 790 transitions. [2022-02-14 19:44:01,891 INFO L471 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) [2022-02-14 19:44:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 790 transitions. [2022-02-14 19:44:01,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-14 19:44:01,892 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:01,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:01,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-14 19:44:01,892 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:01,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:01,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1405496584, now seen corresponding path program 1 times [2022-02-14 19:44:01,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:01,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710997977] [2022-02-14 19:44:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:01,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:01,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:02,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:02,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:02,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:02,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710997977] [2022-02-14 19:44:02,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710997977] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:02,023 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:02,023 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-14 19:44:02,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116712581] [2022-02-14 19:44:02,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:02,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-14 19:44:02,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-14 19:44:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-14 19:44:02,025 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) [2022-02-14 19:44:02,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:02,977 INFO L93 Difference]: Finished difference Result 1117 states and 1501 transitions. [2022-02-14 19:44:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 19:44:02,977 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 [2022-02-14 19:44:02,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:02,981 INFO L225 Difference]: With dead ends: 1117 [2022-02-14 19:44:02,981 INFO L226 Difference]: Without dead ends: 819 [2022-02-14 19:44:02,982 INFO L932 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 [2022-02-14 19:44:02,983 INFO L933 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 [2022-02-14 19:44:02,983 INFO L934 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] [2022-02-14 19:44:02,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-02-14 19:44:03,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 771. [2022-02-14 19:44:03,020 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) [2022-02-14 19:44:03,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1047 transitions. [2022-02-14 19:44:03,023 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1047 transitions. Word has length 33 [2022-02-14 19:44:03,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:03,024 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 1047 transitions. [2022-02-14 19:44:03,024 INFO L471 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) [2022-02-14 19:44:03,024 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1047 transitions. [2022-02-14 19:44:03,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-14 19:44:03,025 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:03,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:03,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-14 19:44:03,025 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:03,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:03,026 INFO L85 PathProgramCache]: Analyzing trace with hash -918102906, now seen corresponding path program 1 times [2022-02-14 19:44:03,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:03,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832533247] [2022-02-14 19:44:03,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:03,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:03,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:03,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-14 19:44:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:03,141 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:03,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832533247] [2022-02-14 19:44:03,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832533247] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:03,141 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:03,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-14 19:44:03,142 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939799324] [2022-02-14 19:44:03,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:03,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-14 19:44:03,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:03,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-14 19:44:03,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-14 19:44:03,143 INFO L87 Difference]: Start difference. First operand 771 states and 1047 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-14 19:44:04,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:04,166 INFO L93 Difference]: Finished difference Result 865 states and 1163 transitions. [2022-02-14 19:44:04,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-14 19:44:04,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2022-02-14 19:44:04,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:04,170 INFO L225 Difference]: With dead ends: 865 [2022-02-14 19:44:04,170 INFO L226 Difference]: Without dead ends: 860 [2022-02-14 19:44:04,171 INFO L932 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 [2022-02-14 19:44:04,172 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 516 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:04,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 945 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-14 19:44:04,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-02-14 19:44:04,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 808. [2022-02-14 19:44:04,204 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) [2022-02-14 19:44:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1090 transitions. [2022-02-14 19:44:04,207 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1090 transitions. Word has length 39 [2022-02-14 19:44:04,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:04,208 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 1090 transitions. [2022-02-14 19:44:04,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-14 19:44:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1090 transitions. [2022-02-14 19:44:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-14 19:44:04,209 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:04,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:04,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-14 19:44:04,209 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:04,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash 726893149, now seen corresponding path program 1 times [2022-02-14 19:44:04,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:04,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655106315] [2022-02-14 19:44:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:04,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:04,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:04,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:04,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:04,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655106315] [2022-02-14 19:44:04,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655106315] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:04,339 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:04,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-14 19:44:04,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54087121] [2022-02-14 19:44:04,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:04,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-14 19:44:04,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-14 19:44:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-14 19:44:04,341 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) [2022-02-14 19:44:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:05,407 INFO L93 Difference]: Finished difference Result 842 states and 1132 transitions. [2022-02-14 19:44:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 19:44:05,408 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 [2022-02-14 19:44:05,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:05,411 INFO L225 Difference]: With dead ends: 842 [2022-02-14 19:44:05,411 INFO L226 Difference]: Without dead ends: 839 [2022-02-14 19:44:05,412 INFO L932 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 [2022-02-14 19:44:05,413 INFO L933 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:05,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 743 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-14 19:44:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-02-14 19:44:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 819. [2022-02-14 19:44:05,452 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) [2022-02-14 19:44:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1104 transitions. [2022-02-14 19:44:05,455 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1104 transitions. Word has length 38 [2022-02-14 19:44:05,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:05,455 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1104 transitions. [2022-02-14 19:44:05,456 INFO L471 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) [2022-02-14 19:44:05,456 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1104 transitions. [2022-02-14 19:44:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-14 19:44:05,458 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:05,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:05,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-14 19:44:05,458 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:05,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2055229827, now seen corresponding path program 1 times [2022-02-14 19:44:05,458 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:05,459 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832322871] [2022-02-14 19:44:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:05,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:05,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-14 19:44:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:05,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:05,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:05,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832322871] [2022-02-14 19:44:05,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832322871] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:05,687 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:05,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-14 19:44:05,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989208200] [2022-02-14 19:44:05,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:05,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-14 19:44:05,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:05,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-14 19:44:05,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-14 19:44:05,688 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) [2022-02-14 19:44:07,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:07,486 INFO L93 Difference]: Finished difference Result 877 states and 1176 transitions. [2022-02-14 19:44:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 19:44:07,487 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 [2022-02-14 19:44:07,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:07,490 INFO L225 Difference]: With dead ends: 877 [2022-02-14 19:44:07,491 INFO L226 Difference]: Without dead ends: 871 [2022-02-14 19:44:07,491 INFO L932 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 [2022-02-14 19:44:07,493 INFO L933 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, 1.4s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:07,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 1168 Invalid, 2390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-14 19:44:07,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-02-14 19:44:07,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 819. [2022-02-14 19:44:07,537 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) [2022-02-14 19:44:07,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1103 transitions. [2022-02-14 19:44:07,541 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1103 transitions. Word has length 40 [2022-02-14 19:44:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:07,541 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1103 transitions. [2022-02-14 19:44:07,541 INFO L471 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) [2022-02-14 19:44:07,541 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1103 transitions. [2022-02-14 19:44:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-14 19:44:07,543 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:07,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:07,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-14 19:44:07,544 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1850451194, now seen corresponding path program 1 times [2022-02-14 19:44:07,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:07,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105784251] [2022-02-14 19:44:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:07,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:07,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:07,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-14 19:44:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:07,760 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:07,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105784251] [2022-02-14 19:44:07,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105784251] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:07,761 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:07,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-14 19:44:07,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478784732] [2022-02-14 19:44:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:07,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-14 19:44:07,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:07,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-14 19:44:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-14 19:44:07,765 INFO L87 Difference]: Start difference. First operand 819 states and 1103 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) [2022-02-14 19:44:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:09,226 INFO L93 Difference]: Finished difference Result 877 states and 1175 transitions. [2022-02-14 19:44:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 19:44:09,227 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 [2022-02-14 19:44:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:09,232 INFO L225 Difference]: With dead ends: 877 [2022-02-14 19:44:09,232 INFO L226 Difference]: Without dead ends: 871 [2022-02-14 19:44:09,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2022-02-14 19:44:09,233 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 1635 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 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, 1.1s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:09,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1650 Valid, 885 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-14 19:44:09,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-02-14 19:44:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 819. [2022-02-14 19:44:09,303 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) [2022-02-14 19:44:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1102 transitions. [2022-02-14 19:44:09,305 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1102 transitions. Word has length 40 [2022-02-14 19:44:09,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:09,307 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1102 transitions. [2022-02-14 19:44:09,307 INFO L471 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) [2022-02-14 19:44:09,307 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1102 transitions. [2022-02-14 19:44:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-14 19:44:09,308 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:09,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:09,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-14 19:44:09,308 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:09,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:09,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1612959141, now seen corresponding path program 1 times [2022-02-14 19:44:09,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:09,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830090469] [2022-02-14 19:44:09,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:09,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:09,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-14 19:44:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:09,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:09,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:09,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830090469] [2022-02-14 19:44:09,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830090469] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:09,447 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:09,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-14 19:44:09,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856451142] [2022-02-14 19:44:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:09,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 19:44:09,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:09,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 19:44:09,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-14 19:44:09,448 INFO L87 Difference]: Start difference. First operand 819 states and 1102 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) [2022-02-14 19:44:10,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:10,543 INFO L93 Difference]: Finished difference Result 882 states and 1180 transitions. [2022-02-14 19:44:10,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-14 19:44:10,543 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 [2022-02-14 19:44:10,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:10,547 INFO L225 Difference]: With dead ends: 882 [2022-02-14 19:44:10,547 INFO L226 Difference]: Without dead ends: 867 [2022-02-14 19:44:10,547 INFO L932 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 [2022-02-14 19:44:10,548 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 671 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:10,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 1258 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-14 19:44:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-02-14 19:44:10,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 817. [2022-02-14 19:44:10,585 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) [2022-02-14 19:44:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1098 transitions. [2022-02-14 19:44:10,588 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1098 transitions. Word has length 41 [2022-02-14 19:44:10,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:10,588 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1098 transitions. [2022-02-14 19:44:10,588 INFO L471 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) [2022-02-14 19:44:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1098 transitions. [2022-02-14 19:44:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-14 19:44:10,589 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:10,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:10,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-14 19:44:10,589 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:10,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:10,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1434972884, now seen corresponding path program 1 times [2022-02-14 19:44:10,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:10,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100204220] [2022-02-14 19:44:10,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:10,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:10,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:10,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-14 19:44:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:10,753 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:10,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100204220] [2022-02-14 19:44:10,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100204220] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:10,753 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:10,753 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-14 19:44:10,753 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027550962] [2022-02-14 19:44:10,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:10,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 19:44:10,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:10,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 19:44:10,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-14 19:44:10,754 INFO L87 Difference]: Start difference. First operand 817 states and 1098 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) [2022-02-14 19:44:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:11,917 INFO L93 Difference]: Finished difference Result 880 states and 1176 transitions. [2022-02-14 19:44:11,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-14 19:44:11,918 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 [2022-02-14 19:44:11,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:11,926 INFO L225 Difference]: With dead ends: 880 [2022-02-14 19:44:11,926 INFO L226 Difference]: Without dead ends: 860 [2022-02-14 19:44:11,927 INFO L932 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 [2022-02-14 19:44:11,927 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 515 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:11,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1301 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-14 19:44:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-02-14 19:44:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 810. [2022-02-14 19:44:11,968 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) [2022-02-14 19:44:11,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1089 transitions. [2022-02-14 19:44:11,970 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1089 transitions. Word has length 42 [2022-02-14 19:44:11,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:11,970 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 1089 transitions. [2022-02-14 19:44:11,970 INFO L471 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) [2022-02-14 19:44:11,971 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1089 transitions. [2022-02-14 19:44:11,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-14 19:44:11,971 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:11,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:11,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-14 19:44:11,972 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:11,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2069240196, now seen corresponding path program 1 times [2022-02-14 19:44:11,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:11,973 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126423114] [2022-02-14 19:44:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:11,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:12,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:12,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:12,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:12,113 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:12,113 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126423114] [2022-02-14 19:44:12,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126423114] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:12,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:12,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-14 19:44:12,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429778839] [2022-02-14 19:44:12,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:12,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-14 19:44:12,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:12,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-14 19:44:12,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-14 19:44:12,115 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) [2022-02-14 19:44:13,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:13,221 INFO L93 Difference]: Finished difference Result 857 states and 1144 transitions. [2022-02-14 19:44:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-14 19:44:13,222 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 [2022-02-14 19:44:13,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:13,225 INFO L225 Difference]: With dead ends: 857 [2022-02-14 19:44:13,225 INFO L226 Difference]: Without dead ends: 835 [2022-02-14 19:44:13,226 INFO L932 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 [2022-02-14 19:44:13,226 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 391 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:13,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1012 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-14 19:44:13,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-02-14 19:44:13,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 812. [2022-02-14 19:44:13,266 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) [2022-02-14 19:44:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1091 transitions. [2022-02-14 19:44:13,269 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1091 transitions. Word has length 42 [2022-02-14 19:44:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:13,269 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1091 transitions. [2022-02-14 19:44:13,269 INFO L471 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) [2022-02-14 19:44:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1091 transitions. [2022-02-14 19:44:13,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-02-14 19:44:13,270 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:13,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:13,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-14 19:44:13,270 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:13,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:13,270 INFO L85 PathProgramCache]: Analyzing trace with hash -289846458, now seen corresponding path program 1 times [2022-02-14 19:44:13,270 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:13,271 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416550383] [2022-02-14 19:44:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:13,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:13,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:13,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-14 19:44:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:13,396 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:13,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416550383] [2022-02-14 19:44:13,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416550383] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:13,397 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:13,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-14 19:44:13,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805912386] [2022-02-14 19:44:13,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:13,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-14 19:44:13,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:13,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-14 19:44:13,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-02-14 19:44:13,398 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) [2022-02-14 19:44:14,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:14,695 INFO L93 Difference]: Finished difference Result 908 states and 1209 transitions. [2022-02-14 19:44:14,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-14 19:44:14,695 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 [2022-02-14 19:44:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:14,706 INFO L225 Difference]: With dead ends: 908 [2022-02-14 19:44:14,706 INFO L226 Difference]: Without dead ends: 840 [2022-02-14 19:44:14,707 INFO L932 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 [2022-02-14 19:44:14,707 INFO L933 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, 1.1s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:14,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 914 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-14 19:44:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-02-14 19:44:14,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 816. [2022-02-14 19:44:14,745 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) [2022-02-14 19:44:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1096 transitions. [2022-02-14 19:44:14,748 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1096 transitions. Word has length 44 [2022-02-14 19:44:14,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:14,748 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 1096 transitions. [2022-02-14 19:44:14,748 INFO L471 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) [2022-02-14 19:44:14,748 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1096 transitions. [2022-02-14 19:44:14,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-14 19:44:14,749 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:14,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:14,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-14 19:44:14,749 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:14,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:14,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1666051445, now seen corresponding path program 1 times [2022-02-14 19:44:14,750 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:14,750 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712601034] [2022-02-14 19:44:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:14,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:14,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:14,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:14,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:14,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:14,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712601034] [2022-02-14 19:44:14,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712601034] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:14,871 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:14,871 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-14 19:44:14,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098188236] [2022-02-14 19:44:14,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:14,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-14 19:44:14,872 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:14,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-14 19:44:14,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-14 19:44:14,872 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) [2022-02-14 19:44:16,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:16,106 INFO L93 Difference]: Finished difference Result 860 states and 1147 transitions. [2022-02-14 19:44:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 19:44:16,106 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 [2022-02-14 19:44:16,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:16,109 INFO L225 Difference]: With dead ends: 860 [2022-02-14 19:44:16,109 INFO L226 Difference]: Without dead ends: 838 [2022-02-14 19:44:16,110 INFO L932 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 [2022-02-14 19:44:16,110 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 295 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:16,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 1001 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-14 19:44:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-02-14 19:44:16,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 816. [2022-02-14 19:44:16,146 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) [2022-02-14 19:44:16,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1096 transitions. [2022-02-14 19:44:16,149 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1096 transitions. Word has length 43 [2022-02-14 19:44:16,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:16,150 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 1096 transitions. [2022-02-14 19:44:16,150 INFO L471 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) [2022-02-14 19:44:16,150 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1096 transitions. [2022-02-14 19:44:16,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-14 19:44:16,151 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:16,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:16,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-14 19:44:16,151 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:16,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:16,151 INFO L85 PathProgramCache]: Analyzing trace with hash -233101078, now seen corresponding path program 1 times [2022-02-14 19:44:16,151 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:16,151 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134464780] [2022-02-14 19:44:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:16,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:16,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:16,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:16,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:16,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:16,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-14 19:44:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:16,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:16,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134464780] [2022-02-14 19:44:16,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134464780] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:16,306 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:16,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-14 19:44:16,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171970076] [2022-02-14 19:44:16,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:16,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 19:44:16,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:16,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 19:44:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-14 19:44:16,307 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) [2022-02-14 19:44:17,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:17,227 INFO L93 Difference]: Finished difference Result 861 states and 1149 transitions. [2022-02-14 19:44:17,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-14 19:44:17,227 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 [2022-02-14 19:44:17,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:17,230 INFO L225 Difference]: With dead ends: 861 [2022-02-14 19:44:17,230 INFO L226 Difference]: Without dead ends: 843 [2022-02-14 19:44:17,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-14 19:44:17,231 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 784 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:17,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 1326 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-14 19:44:17,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-02-14 19:44:17,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 814. [2022-02-14 19:44:17,271 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) [2022-02-14 19:44:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1092 transitions. [2022-02-14 19:44:17,274 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1092 transitions. Word has length 45 [2022-02-14 19:44:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:17,274 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1092 transitions. [2022-02-14 19:44:17,274 INFO L471 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) [2022-02-14 19:44:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1092 transitions. [2022-02-14 19:44:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-14 19:44:17,276 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:17,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:17,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-14 19:44:17,276 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:17,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1086119000, now seen corresponding path program 1 times [2022-02-14 19:44:17,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:17,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867724519] [2022-02-14 19:44:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:17,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:17,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:17,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:17,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:17,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:17,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-14 19:44:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:17,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:17,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867724519] [2022-02-14 19:44:17,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867724519] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:17,452 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:17,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-14 19:44:17,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302521958] [2022-02-14 19:44:17,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:17,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-14 19:44:17,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:17,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-14 19:44:17,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-14 19:44:17,453 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) [2022-02-14 19:44:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:18,263 INFO L93 Difference]: Finished difference Result 880 states and 1173 transitions. [2022-02-14 19:44:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-14 19:44:18,266 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 [2022-02-14 19:44:18,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:18,269 INFO L225 Difference]: With dead ends: 880 [2022-02-14 19:44:18,269 INFO L226 Difference]: Without dead ends: 804 [2022-02-14 19:44:18,270 INFO L932 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 [2022-02-14 19:44:18,270 INFO L933 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 [2022-02-14 19:44:18,270 INFO L934 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] [2022-02-14 19:44:18,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-02-14 19:44:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 775. [2022-02-14 19:44:18,309 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) [2022-02-14 19:44:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1041 transitions. [2022-02-14 19:44:18,311 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1041 transitions. Word has length 46 [2022-02-14 19:44:18,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:18,311 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 1041 transitions. [2022-02-14 19:44:18,312 INFO L471 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) [2022-02-14 19:44:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1041 transitions. [2022-02-14 19:44:18,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-14 19:44:18,312 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:18,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:18,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-14 19:44:18,313 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:18,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:18,313 INFO L85 PathProgramCache]: Analyzing trace with hash 380283320, now seen corresponding path program 1 times [2022-02-14 19:44:18,313 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:18,313 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920221068] [2022-02-14 19:44:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:18,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:18,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:18,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:18,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-14 19:44:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:18,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:18,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920221068] [2022-02-14 19:44:18,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920221068] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:18,415 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:18,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-14 19:44:18,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574395185] [2022-02-14 19:44:18,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:18,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-14 19:44:18,415 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-14 19:44:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-14 19:44:18,416 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) [2022-02-14 19:44:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:19,504 INFO L93 Difference]: Finished difference Result 1134 states and 1535 transitions. [2022-02-14 19:44:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-14 19:44:19,505 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 [2022-02-14 19:44:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:19,508 INFO L225 Difference]: With dead ends: 1134 [2022-02-14 19:44:19,508 INFO L226 Difference]: Without dead ends: 1131 [2022-02-14 19:44:19,509 INFO L932 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 [2022-02-14 19:44:19,509 INFO L933 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 [2022-02-14 19:44:19,509 INFO L934 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] [2022-02-14 19:44:19,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-02-14 19:44:19,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 888. [2022-02-14 19:44:19,554 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) [2022-02-14 19:44:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1195 transitions. [2022-02-14 19:44:19,557 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1195 transitions. Word has length 47 [2022-02-14 19:44:19,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:19,557 INFO L470 AbstractCegarLoop]: Abstraction has 888 states and 1195 transitions. [2022-02-14 19:44:19,557 INFO L471 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) [2022-02-14 19:44:19,557 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1195 transitions. [2022-02-14 19:44:19,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-14 19:44:19,558 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:19,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:19,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-14 19:44:19,558 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:19,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:19,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1845769478, now seen corresponding path program 1 times [2022-02-14 19:44:19,559 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:19,559 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438613364] [2022-02-14 19:44:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:19,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:19,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:19,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:19,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:44:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:19,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:44:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:19,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:19,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438613364] [2022-02-14 19:44:19,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438613364] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:19,688 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:19,688 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-14 19:44:19,688 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882692452] [2022-02-14 19:44:19,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:19,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 19:44:19,689 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:19,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 19:44:19,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-14 19:44:19,689 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) [2022-02-14 19:44:20,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:20,818 INFO L93 Difference]: Finished difference Result 933 states and 1248 transitions. [2022-02-14 19:44:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-14 19:44:20,818 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 [2022-02-14 19:44:20,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:20,821 INFO L225 Difference]: With dead ends: 933 [2022-02-14 19:44:20,821 INFO L226 Difference]: Without dead ends: 915 [2022-02-14 19:44:20,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-14 19:44:20,822 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 308 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:20,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 1261 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-14 19:44:20,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-02-14 19:44:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 886. [2022-02-14 19:44:20,866 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) [2022-02-14 19:44:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1191 transitions. [2022-02-14 19:44:20,868 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1191 transitions. Word has length 47 [2022-02-14 19:44:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:20,868 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1191 transitions. [2022-02-14 19:44:20,868 INFO L471 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) [2022-02-14 19:44:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1191 transitions. [2022-02-14 19:44:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-14 19:44:20,869 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:20,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:20,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-14 19:44:20,869 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:20,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:20,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1334176634, now seen corresponding path program 1 times [2022-02-14 19:44:20,870 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:20,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189840907] [2022-02-14 19:44:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:20,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:20,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:21,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:21,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-14 19:44:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:21,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:21,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189840907] [2022-02-14 19:44:21,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189840907] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:21,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:21,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-14 19:44:21,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649422261] [2022-02-14 19:44:21,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:21,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 19:44:21,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:21,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 19:44:21,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-14 19:44:21,056 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) [2022-02-14 19:44:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:22,678 INFO L93 Difference]: Finished difference Result 1483 states and 1950 transitions. [2022-02-14 19:44:22,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:44:22,679 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 [2022-02-14 19:44:22,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:22,682 INFO L225 Difference]: With dead ends: 1483 [2022-02-14 19:44:22,682 INFO L226 Difference]: Without dead ends: 936 [2022-02-14 19:44:22,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-02-14 19:44:22,683 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1837 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:22,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 784 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-14 19:44:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-02-14 19:44:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 877. [2022-02-14 19:44:22,744 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) [2022-02-14 19:44:22,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1170 transitions. [2022-02-14 19:44:22,746 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1170 transitions. Word has length 48 [2022-02-14 19:44:22,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:22,746 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1170 transitions. [2022-02-14 19:44:22,747 INFO L471 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) [2022-02-14 19:44:22,747 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1170 transitions. [2022-02-14 19:44:22,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-14 19:44:22,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:22,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:22,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-14 19:44:22,748 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:22,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:22,748 INFO L85 PathProgramCache]: Analyzing trace with hash -934618588, now seen corresponding path program 1 times [2022-02-14 19:44:22,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:22,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615413167] [2022-02-14 19:44:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:22,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:22,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:22,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:22,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:22,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:22,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615413167] [2022-02-14 19:44:22,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615413167] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:22,902 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:22,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-14 19:44:22,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518256384] [2022-02-14 19:44:22,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:22,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-14 19:44:22,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:22,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-14 19:44:22,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-02-14 19:44:22,903 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) [2022-02-14 19:44:24,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:24,415 INFO L93 Difference]: Finished difference Result 1151 states and 1528 transitions. [2022-02-14 19:44:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-14 19:44:24,416 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 [2022-02-14 19:44:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:24,420 INFO L225 Difference]: With dead ends: 1151 [2022-02-14 19:44:24,420 INFO L226 Difference]: Without dead ends: 1075 [2022-02-14 19:44:24,421 INFO L932 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 [2022-02-14 19:44:24,421 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 1640 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:24,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1643 Valid, 1333 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-14 19:44:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-02-14 19:44:24,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 932. [2022-02-14 19:44:24,477 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) [2022-02-14 19:44:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1243 transitions. [2022-02-14 19:44:24,479 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1243 transitions. Word has length 50 [2022-02-14 19:44:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:24,480 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 1243 transitions. [2022-02-14 19:44:24,480 INFO L471 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) [2022-02-14 19:44:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1243 transitions. [2022-02-14 19:44:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-02-14 19:44:24,481 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:24,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:24,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-14 19:44:24,481 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:24,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:24,481 INFO L85 PathProgramCache]: Analyzing trace with hash -550624226, now seen corresponding path program 1 times [2022-02-14 19:44:24,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:24,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617576347] [2022-02-14 19:44:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:24,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:24,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:24,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:24,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-14 19:44:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:24,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:24,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617576347] [2022-02-14 19:44:24,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617576347] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:24,670 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:24,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-14 19:44:24,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323876432] [2022-02-14 19:44:24,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:24,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-14 19:44:24,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:24,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-14 19:44:24,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-14 19:44:24,671 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) [2022-02-14 19:44:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:25,727 INFO L93 Difference]: Finished difference Result 979 states and 1296 transitions. [2022-02-14 19:44:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:44:25,727 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 [2022-02-14 19:44:25,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:25,736 INFO L225 Difference]: With dead ends: 979 [2022-02-14 19:44:25,736 INFO L226 Difference]: Without dead ends: 959 [2022-02-14 19:44:25,737 INFO L932 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 [2022-02-14 19:44:25,737 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 620 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:25,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 1473 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-14 19:44:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-02-14 19:44:25,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 932. [2022-02-14 19:44:25,792 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) [2022-02-14 19:44:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1231 transitions. [2022-02-14 19:44:25,794 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1231 transitions. Word has length 50 [2022-02-14 19:44:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:25,794 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 1231 transitions. [2022-02-14 19:44:25,794 INFO L471 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) [2022-02-14 19:44:25,794 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1231 transitions. [2022-02-14 19:44:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-14 19:44:25,795 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:25,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:25,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-14 19:44:25,795 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1358171884, now seen corresponding path program 1 times [2022-02-14 19:44:25,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:25,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182229610] [2022-02-14 19:44:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:25,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:25,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:25,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:25,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-14 19:44:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:25,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:25,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182229610] [2022-02-14 19:44:25,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182229610] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:25,914 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:25,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-14 19:44:25,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972551244] [2022-02-14 19:44:25,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:25,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-14 19:44:25,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:25,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-14 19:44:25,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-14 19:44:25,916 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) [2022-02-14 19:44:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:26,926 INFO L93 Difference]: Finished difference Result 1041 states and 1345 transitions. [2022-02-14 19:44:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-14 19:44:26,927 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 [2022-02-14 19:44:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:26,929 INFO L225 Difference]: With dead ends: 1041 [2022-02-14 19:44:26,929 INFO L226 Difference]: Without dead ends: 685 [2022-02-14 19:44:26,930 INFO L932 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 [2022-02-14 19:44:26,930 INFO L933 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 [2022-02-14 19:44:26,930 INFO L934 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] [2022-02-14 19:44:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-02-14 19:44:26,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 623. [2022-02-14 19:44:26,968 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) [2022-02-14 19:44:26,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 791 transitions. [2022-02-14 19:44:26,969 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 791 transitions. Word has length 52 [2022-02-14 19:44:26,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:26,969 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 791 transitions. [2022-02-14 19:44:26,969 INFO L471 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) [2022-02-14 19:44:26,969 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 791 transitions. [2022-02-14 19:44:26,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-14 19:44:26,970 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:26,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:26,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-14 19:44:26,970 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:26,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:26,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1083541932, now seen corresponding path program 1 times [2022-02-14 19:44:26,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:26,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238955802] [2022-02-14 19:44:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:26,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:27,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:27,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:27,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:27,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:44:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:27,127 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:27,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238955802] [2022-02-14 19:44:27,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238955802] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:27,127 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:27,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-14 19:44:27,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982315698] [2022-02-14 19:44:27,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:27,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-14 19:44:27,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-14 19:44:27,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-14 19:44:27,128 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), 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) [2022-02-14 19:44:28,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:28,381 INFO L93 Difference]: Finished difference Result 681 states and 860 transitions. [2022-02-14 19:44:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 19:44:28,383 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 [2022-02-14 19:44:28,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:28,385 INFO L225 Difference]: With dead ends: 681 [2022-02-14 19:44:28,385 INFO L226 Difference]: Without dead ends: 659 [2022-02-14 19:44:28,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-02-14 19:44:28,386 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 777 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:28,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 1054 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-14 19:44:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-02-14 19:44:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 624. [2022-02-14 19:44:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 499 states have (on average 1.2745490981963927) internal successors, (636), 509 states have internal predecessors, (636), 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) [2022-02-14 19:44:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 792 transitions. [2022-02-14 19:44:28,425 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 792 transitions. Word has length 51 [2022-02-14 19:44:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:28,425 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 792 transitions. [2022-02-14 19:44:28,425 INFO L471 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) [2022-02-14 19:44:28,425 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 792 transitions. [2022-02-14 19:44:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-14 19:44:28,426 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:28,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:28,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-14 19:44:28,426 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:28,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:28,427 INFO L85 PathProgramCache]: Analyzing trace with hash 325068325, now seen corresponding path program 1 times [2022-02-14 19:44:28,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:28,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012608887] [2022-02-14 19:44:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:28,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:28,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:28,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:28,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:44:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:28,576 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:28,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012608887] [2022-02-14 19:44:28,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012608887] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:28,576 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:28,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-14 19:44:28,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005313191] [2022-02-14 19:44:28,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:28,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-14 19:44:28,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:28,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-14 19:44:28,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-14 19:44:28,578 INFO L87 Difference]: Start difference. First operand 624 states and 792 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) [2022-02-14 19:44:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:29,554 INFO L93 Difference]: Finished difference Result 676 states and 851 transitions. [2022-02-14 19:44:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:44:29,554 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 [2022-02-14 19:44:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:29,557 INFO L225 Difference]: With dead ends: 676 [2022-02-14 19:44:29,557 INFO L226 Difference]: Without dead ends: 648 [2022-02-14 19:44:29,557 INFO L932 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 [2022-02-14 19:44:29,557 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 458 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:29,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 1446 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-14 19:44:29,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-02-14 19:44:29,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 616. [2022-02-14 19:44:29,603 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) [2022-02-14 19:44:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 779 transitions. [2022-02-14 19:44:29,605 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 779 transitions. Word has length 51 [2022-02-14 19:44:29,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:29,605 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 779 transitions. [2022-02-14 19:44:29,605 INFO L471 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) [2022-02-14 19:44:29,605 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 779 transitions. [2022-02-14 19:44:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-14 19:44:29,606 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:29,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:29,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-14 19:44:29,606 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash 519788489, now seen corresponding path program 1 times [2022-02-14 19:44:29,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:29,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811059521] [2022-02-14 19:44:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:29,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:29,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:29,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:29,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:29,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:29,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:29,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:29,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811059521] [2022-02-14 19:44:29,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811059521] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:29,758 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:29,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-14 19:44:29,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622411865] [2022-02-14 19:44:29,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:29,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-14 19:44:29,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:29,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-14 19:44:29,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-14 19:44:29,762 INFO L87 Difference]: Start difference. First operand 616 states and 779 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) [2022-02-14 19:44:30,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:30,643 INFO L93 Difference]: Finished difference Result 865 states and 1111 transitions. [2022-02-14 19:44:30,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-14 19:44:30,643 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 [2022-02-14 19:44:30,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:30,646 INFO L225 Difference]: With dead ends: 865 [2022-02-14 19:44:30,646 INFO L226 Difference]: Without dead ends: 832 [2022-02-14 19:44:30,647 INFO L932 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 [2022-02-14 19:44:30,647 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 729 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:30,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 971 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-14 19:44:30,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-02-14 19:44:30,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 659. [2022-02-14 19:44:30,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 527 states have (on average 1.2580645161290323) internal successors, (663), 530 states have internal predecessors, (663), 73 states have call successors, (73), 48 states have call predecessors, (73), 58 states have return successors, (97), 81 states have call predecessors, (97), 65 states have call successors, (97) [2022-02-14 19:44:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 833 transitions. [2022-02-14 19:44:30,703 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 833 transitions. Word has length 52 [2022-02-14 19:44:30,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:30,703 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 833 transitions. [2022-02-14 19:44:30,704 INFO L471 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) [2022-02-14 19:44:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 833 transitions. [2022-02-14 19:44:30,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-14 19:44:30,704 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:30,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:30,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-14 19:44:30,705 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:30,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:30,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1964857033, now seen corresponding path program 1 times [2022-02-14 19:44:30,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:30,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620404486] [2022-02-14 19:44:30,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:30,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:30,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:30,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:30,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:30,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:30,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:30,849 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:30,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620404486] [2022-02-14 19:44:30,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620404486] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:30,849 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:30,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-14 19:44:30,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435986868] [2022-02-14 19:44:30,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:30,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 19:44:30,850 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 19:44:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-02-14 19:44:30,850 INFO L87 Difference]: Start difference. First operand 659 states and 833 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) [2022-02-14 19:44:31,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:31,759 INFO L93 Difference]: Finished difference Result 1092 states and 1408 transitions. [2022-02-14 19:44:31,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-14 19:44:31,760 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 [2022-02-14 19:44:31,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:31,762 INFO L225 Difference]: With dead ends: 1092 [2022-02-14 19:44:31,762 INFO L226 Difference]: Without dead ends: 714 [2022-02-14 19:44:31,763 INFO L932 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 [2022-02-14 19:44:31,764 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 1072 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:31,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 872 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-14 19:44:31,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-02-14 19:44:31,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 666. [2022-02-14 19:44:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 534 states have (on average 1.2602996254681649) internal successors, (673), 537 states have internal predecessors, (673), 73 states have call successors, (73), 48 states have call predecessors, (73), 58 states have return successors, (97), 81 states have call predecessors, (97), 65 states have call successors, (97) [2022-02-14 19:44:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 843 transitions. [2022-02-14 19:44:31,811 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 843 transitions. Word has length 52 [2022-02-14 19:44:31,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:31,812 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 843 transitions. [2022-02-14 19:44:31,812 INFO L471 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) [2022-02-14 19:44:31,812 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 843 transitions. [2022-02-14 19:44:31,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-14 19:44:31,813 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:31,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:31,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-14 19:44:31,813 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:31,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:31,814 INFO L85 PathProgramCache]: Analyzing trace with hash 376509131, now seen corresponding path program 1 times [2022-02-14 19:44:31,814 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:31,814 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509218377] [2022-02-14 19:44:31,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:31,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:31,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:31,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:31,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:31,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:31,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509218377] [2022-02-14 19:44:31,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509218377] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:31,980 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:31,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-14 19:44:31,981 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795351853] [2022-02-14 19:44:31,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:31,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-14 19:44:31,981 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:31,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-14 19:44:31,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-14 19:44:31,982 INFO L87 Difference]: Start difference. First operand 666 states and 843 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) [2022-02-14 19:44:33,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:33,547 INFO L93 Difference]: Finished difference Result 731 states and 921 transitions. [2022-02-14 19:44:33,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-14 19:44:33,547 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 [2022-02-14 19:44:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:33,550 INFO L225 Difference]: With dead ends: 731 [2022-02-14 19:44:33,550 INFO L226 Difference]: Without dead ends: 610 [2022-02-14 19:44:33,551 INFO L932 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 [2022-02-14 19:44:33,553 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 985 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:33,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 1224 Invalid, 2515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-14 19:44:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-02-14 19:44:33,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 575. [2022-02-14 19:44:33,595 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) [2022-02-14 19:44:33,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 731 transitions. [2022-02-14 19:44:33,596 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 731 transitions. Word has length 52 [2022-02-14 19:44:33,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:33,596 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 731 transitions. [2022-02-14 19:44:33,597 INFO L471 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) [2022-02-14 19:44:33,597 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 731 transitions. [2022-02-14 19:44:33,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-14 19:44:33,597 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:33,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:33,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-14 19:44:33,598 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:33,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:33,598 INFO L85 PathProgramCache]: Analyzing trace with hash -614500354, now seen corresponding path program 1 times [2022-02-14 19:44:33,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:33,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848435977] [2022-02-14 19:44:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:33,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:33,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:33,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:33,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:33,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:33,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:33,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848435977] [2022-02-14 19:44:33,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848435977] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:33,758 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:33,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-14 19:44:33,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442507560] [2022-02-14 19:44:33,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:33,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-14 19:44:33,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-14 19:44:33,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-14 19:44:33,759 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) [2022-02-14 19:44:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:34,658 INFO L93 Difference]: Finished difference Result 609 states and 770 transitions. [2022-02-14 19:44:34,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:44:34,658 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 [2022-02-14 19:44:34,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:34,660 INFO L225 Difference]: With dead ends: 609 [2022-02-14 19:44:34,660 INFO L226 Difference]: Without dead ends: 605 [2022-02-14 19:44:34,661 INFO L932 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 [2022-02-14 19:44:34,661 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 635 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:34,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 1523 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-14 19:44:34,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-02-14 19:44:34,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 583. [2022-02-14 19:44:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 462 states have (on average 1.2705627705627707) internal successors, (587), 472 states have internal predecessors, (587), 69 states have call successors, (69), 44 states have call predecessors, (69), 51 states have return successors, (83), 67 states have call predecessors, (83), 61 states have call successors, (83) [2022-02-14 19:44:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 739 transitions. [2022-02-14 19:44:34,712 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 739 transitions. Word has length 53 [2022-02-14 19:44:34,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:34,712 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 739 transitions. [2022-02-14 19:44:34,712 INFO L471 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) [2022-02-14 19:44:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 739 transitions. [2022-02-14 19:44:34,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-14 19:44:34,713 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:34,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:34,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-14 19:44:34,714 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:34,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:34,714 INFO L85 PathProgramCache]: Analyzing trace with hash -614777184, now seen corresponding path program 1 times [2022-02-14 19:44:34,714 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:34,714 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458409039] [2022-02-14 19:44:34,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:34,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:34,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:34,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:34,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:34,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:34,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:34,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:34,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458409039] [2022-02-14 19:44:34,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458409039] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:34,901 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:34,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-14 19:44:34,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018484796] [2022-02-14 19:44:34,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:34,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-14 19:44:34,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-14 19:44:34,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-14 19:44:34,902 INFO L87 Difference]: Start difference. First operand 583 states and 739 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) [2022-02-14 19:44:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:36,122 INFO L93 Difference]: Finished difference Result 644 states and 823 transitions. [2022-02-14 19:44:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 19:44:36,123 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 [2022-02-14 19:44:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:36,125 INFO L225 Difference]: With dead ends: 644 [2022-02-14 19:44:36,125 INFO L226 Difference]: Without dead ends: 629 [2022-02-14 19:44:36,125 INFO L932 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 [2022-02-14 19:44:36,126 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 335 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:36,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 1745 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-14 19:44:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-02-14 19:44:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 589. [2022-02-14 19:44:36,167 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) [2022-02-14 19:44:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 751 transitions. [2022-02-14 19:44:36,168 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 751 transitions. Word has length 53 [2022-02-14 19:44:36,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:36,169 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 751 transitions. [2022-02-14 19:44:36,169 INFO L471 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) [2022-02-14 19:44:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 751 transitions. [2022-02-14 19:44:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-14 19:44:36,170 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:36,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:36,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-14 19:44:36,170 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:36,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:36,170 INFO L85 PathProgramCache]: Analyzing trace with hash -903470965, now seen corresponding path program 1 times [2022-02-14 19:44:36,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:36,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232669743] [2022-02-14 19:44:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:36,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:36,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:36,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:36,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:36,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:36,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:36,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232669743] [2022-02-14 19:44:36,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232669743] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:36,331 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:36,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-14 19:44:36,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638322482] [2022-02-14 19:44:36,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:36,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 19:44:36,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:36,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 19:44:36,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-14 19:44:36,332 INFO L87 Difference]: Start difference. First operand 589 states and 751 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) [2022-02-14 19:44:37,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:37,612 INFO L93 Difference]: Finished difference Result 758 states and 985 transitions. [2022-02-14 19:44:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-14 19:44:37,613 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 [2022-02-14 19:44:37,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:37,615 INFO L225 Difference]: With dead ends: 758 [2022-02-14 19:44:37,615 INFO L226 Difference]: Without dead ends: 740 [2022-02-14 19:44:37,616 INFO L932 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 [2022-02-14 19:44:37,616 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 1077 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:37,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 987 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-14 19:44:37,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-02-14 19:44:37,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 573. [2022-02-14 19:44:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 454 states have (on average 1.2731277533039647) internal successors, (578), 464 states have internal predecessors, (578), 68 states have call successors, (68), 44 states have call predecessors, (68), 50 states have return successors, (81), 65 states have call predecessors, (81), 60 states have call successors, (81) [2022-02-14 19:44:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 727 transitions. [2022-02-14 19:44:37,661 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 727 transitions. Word has length 54 [2022-02-14 19:44:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:37,661 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 727 transitions. [2022-02-14 19:44:37,661 INFO L471 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) [2022-02-14 19:44:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 727 transitions. [2022-02-14 19:44:37,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-14 19:44:37,662 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:37,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:37,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-14 19:44:37,662 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:37,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:37,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1947373933, now seen corresponding path program 1 times [2022-02-14 19:44:37,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:37,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511753576] [2022-02-14 19:44:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:37,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:37,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:37,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-14 19:44:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:37,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-14 19:44:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:37,825 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:37,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511753576] [2022-02-14 19:44:37,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511753576] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:37,825 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:37,826 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-14 19:44:37,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908266184] [2022-02-14 19:44:37,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:37,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 19:44:37,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:37,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 19:44:37,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-14 19:44:37,826 INFO L87 Difference]: Start difference. First operand 573 states and 727 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) [2022-02-14 19:44:38,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:38,793 INFO L93 Difference]: Finished difference Result 608 states and 766 transitions. [2022-02-14 19:44:38,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 19:44:38,793 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 [2022-02-14 19:44:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:38,795 INFO L225 Difference]: With dead ends: 608 [2022-02-14 19:44:38,795 INFO L226 Difference]: Without dead ends: 580 [2022-02-14 19:44:38,796 INFO L932 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 [2022-02-14 19:44:38,796 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 535 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:38,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 1606 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-14 19:44:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-02-14 19:44:38,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 561. [2022-02-14 19:44:38,861 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) [2022-02-14 19:44:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 711 transitions. [2022-02-14 19:44:38,862 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 711 transitions. Word has length 55 [2022-02-14 19:44:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:38,862 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 711 transitions. [2022-02-14 19:44:38,862 INFO L471 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) [2022-02-14 19:44:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 711 transitions. [2022-02-14 19:44:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-14 19:44:38,863 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:38,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:38,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-14 19:44:38,863 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:38,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:38,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1340373320, now seen corresponding path program 1 times [2022-02-14 19:44:38,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:38,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841318212] [2022-02-14 19:44:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:38,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:38,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:38,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:38,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-14 19:44:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:38,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:39,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-14 19:44:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:39,008 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:39,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841318212] [2022-02-14 19:44:39,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841318212] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:39,008 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:39,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-14 19:44:39,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478215338] [2022-02-14 19:44:39,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:39,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-14 19:44:39,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:39,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-14 19:44:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-14 19:44:39,009 INFO L87 Difference]: Start difference. First operand 561 states and 711 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-14 19:44:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:39,648 INFO L93 Difference]: Finished difference Result 898 states and 1149 transitions. [2022-02-14 19:44:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 19:44:39,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-02-14 19:44:39,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:39,653 INFO L225 Difference]: With dead ends: 898 [2022-02-14 19:44:39,653 INFO L226 Difference]: Without dead ends: 589 [2022-02-14 19:44:39,654 INFO L932 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 [2022-02-14 19:44:39,654 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 448 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:39,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 825 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-14 19:44:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-02-14 19:44:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 566. [2022-02-14 19:44:39,697 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) [2022-02-14 19:44:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 717 transitions. [2022-02-14 19:44:39,698 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 717 transitions. Word has length 58 [2022-02-14 19:44:39,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:39,698 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 717 transitions. [2022-02-14 19:44:39,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-14 19:44:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 717 transitions. [2022-02-14 19:44:39,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-14 19:44:39,699 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:39,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:39,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-14 19:44:39,700 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:39,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:39,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1752890422, now seen corresponding path program 1 times [2022-02-14 19:44:39,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:39,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242971588] [2022-02-14 19:44:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:39,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:39,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:39,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:39,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-14 19:44:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:44:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:39,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:39,903 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:39,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242971588] [2022-02-14 19:44:39,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242971588] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:39,903 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:39,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-14 19:44:39,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527379992] [2022-02-14 19:44:39,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:39,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 19:44:39,904 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:39,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 19:44:39,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-14 19:44:39,904 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) [2022-02-14 19:44:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:40,872 INFO L93 Difference]: Finished difference Result 852 states and 1088 transitions. [2022-02-14 19:44:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-14 19:44:40,873 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 [2022-02-14 19:44:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:40,875 INFO L225 Difference]: With dead ends: 852 [2022-02-14 19:44:40,875 INFO L226 Difference]: Without dead ends: 538 [2022-02-14 19:44:40,876 INFO L932 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 [2022-02-14 19:44:40,877 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 308 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:40,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 1089 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-14 19:44:40,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-02-14 19:44:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 511. [2022-02-14 19:44:40,918 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) [2022-02-14 19:44:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 639 transitions. [2022-02-14 19:44:40,919 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 639 transitions. Word has length 64 [2022-02-14 19:44:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:40,920 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 639 transitions. [2022-02-14 19:44:40,920 INFO L471 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) [2022-02-14 19:44:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 639 transitions. [2022-02-14 19:44:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-14 19:44:40,922 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:40,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:40,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-14 19:44:40,923 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:40,923 INFO L85 PathProgramCache]: Analyzing trace with hash -557797138, now seen corresponding path program 1 times [2022-02-14 19:44:40,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:40,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815513158] [2022-02-14 19:44:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:40,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:40,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:41,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:41,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:44:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:41,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-14 19:44:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:41,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:41,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815513158] [2022-02-14 19:44:41,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815513158] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:41,113 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:41,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-14 19:44:41,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802298484] [2022-02-14 19:44:41,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:41,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 19:44:41,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 19:44:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-02-14 19:44:41,114 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) [2022-02-14 19:44:42,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:42,264 INFO L93 Difference]: Finished difference Result 545 states and 678 transitions. [2022-02-14 19:44:42,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-14 19:44:42,264 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 [2022-02-14 19:44:42,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:42,266 INFO L225 Difference]: With dead ends: 545 [2022-02-14 19:44:42,266 INFO L226 Difference]: Without dead ends: 524 [2022-02-14 19:44:42,267 INFO L932 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 [2022-02-14 19:44:42,267 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 644 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:42,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 1137 Invalid, 2584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-14 19:44:42,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-02-14 19:44:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 508. [2022-02-14 19:44:42,306 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) [2022-02-14 19:44:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 635 transitions. [2022-02-14 19:44:42,307 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 635 transitions. Word has length 59 [2022-02-14 19:44:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:42,307 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 635 transitions. [2022-02-14 19:44:42,308 INFO L471 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) [2022-02-14 19:44:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 635 transitions. [2022-02-14 19:44:42,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-14 19:44:42,308 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:42,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:42,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-14 19:44:42,309 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:42,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:42,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2048336817, now seen corresponding path program 1 times [2022-02-14 19:44:42,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:42,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237382485] [2022-02-14 19:44:42,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:42,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:42,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:42,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:42,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:42,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:44:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:42,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-14 19:44:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:42,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:42,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:42,468 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237382485] [2022-02-14 19:44:42,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237382485] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:42,468 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:42,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-14 19:44:42,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175791458] [2022-02-14 19:44:42,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:42,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-14 19:44:42,468 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-14 19:44:42,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-02-14 19:44:42,469 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) [2022-02-14 19:44:43,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:43,383 INFO L93 Difference]: Finished difference Result 538 states and 669 transitions. [2022-02-14 19:44:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 19:44:43,386 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 [2022-02-14 19:44:43,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:43,388 INFO L225 Difference]: With dead ends: 538 [2022-02-14 19:44:43,388 INFO L226 Difference]: Without dead ends: 520 [2022-02-14 19:44:43,388 INFO L932 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 [2022-02-14 19:44:43,389 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 421 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:43,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 1547 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1968 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-14 19:44:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-02-14 19:44:43,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 504. [2022-02-14 19:44:43,428 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) [2022-02-14 19:44:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 629 transitions. [2022-02-14 19:44:43,429 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 629 transitions. Word has length 58 [2022-02-14 19:44:43,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:43,429 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 629 transitions. [2022-02-14 19:44:43,429 INFO L471 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) [2022-02-14 19:44:43,429 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 629 transitions. [2022-02-14 19:44:43,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-14 19:44:43,430 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:43,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:43,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-14 19:44:43,430 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:43,431 INFO L85 PathProgramCache]: Analyzing trace with hash 853367933, now seen corresponding path program 1 times [2022-02-14 19:44:43,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:43,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839645812] [2022-02-14 19:44:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:43,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:43,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:43,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:43,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:44:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-14 19:44:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:43,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-14 19:44:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:43,568 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:43,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839645812] [2022-02-14 19:44:43,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839645812] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:43,568 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:43,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-14 19:44:43,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411108748] [2022-02-14 19:44:43,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:43,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-14 19:44:43,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:43,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-14 19:44:43,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-14 19:44:43,569 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) [2022-02-14 19:44:44,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:44,488 INFO L93 Difference]: Finished difference Result 539 states and 669 transitions. [2022-02-14 19:44:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:44:44,488 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 [2022-02-14 19:44:44,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:44,490 INFO L225 Difference]: With dead ends: 539 [2022-02-14 19:44:44,490 INFO L226 Difference]: Without dead ends: 515 [2022-02-14 19:44:44,491 INFO L932 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 [2022-02-14 19:44:44,491 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 568 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:44,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 875 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-14 19:44:44,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-02-14 19:44:44,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 499. [2022-02-14 19:44:44,530 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) [2022-02-14 19:44:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 621 transitions. [2022-02-14 19:44:44,531 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 621 transitions. Word has length 60 [2022-02-14 19:44:44,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:44,531 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 621 transitions. [2022-02-14 19:44:44,531 INFO L471 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) [2022-02-14 19:44:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 621 transitions. [2022-02-14 19:44:44,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-14 19:44:44,532 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:44,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:44,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-14 19:44:44,532 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:44,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1746189105, now seen corresponding path program 1 times [2022-02-14 19:44:44,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:44,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862028080] [2022-02-14 19:44:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:44,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:44,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:44,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:44,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:44,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-14 19:44:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:44,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:44:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:44,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:44,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:44:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:44,686 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:44,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862028080] [2022-02-14 19:44:44,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862028080] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:44,687 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:44,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-14 19:44:44,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74119144] [2022-02-14 19:44:44,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:44,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-14 19:44:44,689 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:44,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-14 19:44:44,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-02-14 19:44:44,690 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) [2022-02-14 19:44:45,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:45,637 INFO L93 Difference]: Finished difference Result 780 states and 980 transitions. [2022-02-14 19:44:45,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 19:44:45,637 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 [2022-02-14 19:44:45,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:45,639 INFO L225 Difference]: With dead ends: 780 [2022-02-14 19:44:45,639 INFO L226 Difference]: Without dead ends: 521 [2022-02-14 19:44:45,644 INFO L932 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 [2022-02-14 19:44:45,644 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 745 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:45,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 1089 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-14 19:44:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-02-14 19:44:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 499. [2022-02-14 19:44:45,683 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) [2022-02-14 19:44:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 619 transitions. [2022-02-14 19:44:45,684 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 619 transitions. Word has length 68 [2022-02-14 19:44:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:45,684 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 619 transitions. [2022-02-14 19:44:45,685 INFO L471 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) [2022-02-14 19:44:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 619 transitions. [2022-02-14 19:44:45,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-14 19:44:45,685 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:45,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:45,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-14 19:44:45,686 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:45,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:45,686 INFO L85 PathProgramCache]: Analyzing trace with hash -662819238, now seen corresponding path program 1 times [2022-02-14 19:44:45,686 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:45,686 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4963937] [2022-02-14 19:44:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:45,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:45,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:45,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:45,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:45,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:44:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:44:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:45,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:45,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4963937] [2022-02-14 19:44:45,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4963937] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:45,822 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:45,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-14 19:44:45,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369616304] [2022-02-14 19:44:45,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:45,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-14 19:44:45,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:45,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-14 19:44:45,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-14 19:44:45,823 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) [2022-02-14 19:44:46,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:46,696 INFO L93 Difference]: Finished difference Result 611 states and 749 transitions. [2022-02-14 19:44:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-14 19:44:46,697 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 [2022-02-14 19:44:46,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:46,699 INFO L225 Difference]: With dead ends: 611 [2022-02-14 19:44:46,699 INFO L226 Difference]: Without dead ends: 519 [2022-02-14 19:44:46,712 INFO L932 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 [2022-02-14 19:44:46,713 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 554 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:46,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 794 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-14 19:44:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-02-14 19:44:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 503. [2022-02-14 19:44:46,753 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) [2022-02-14 19:44:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 623 transitions. [2022-02-14 19:44:46,754 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 623 transitions. Word has length 63 [2022-02-14 19:44:46,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:46,754 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 623 transitions. [2022-02-14 19:44:46,754 INFO L471 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) [2022-02-14 19:44:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 623 transitions. [2022-02-14 19:44:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-14 19:44:46,755 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:46,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:46,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-14 19:44:46,755 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:46,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1616978329, now seen corresponding path program 1 times [2022-02-14 19:44:46,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:46,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151925094] [2022-02-14 19:44:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:46,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:46,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:46,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:46,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:46,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:44:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:46,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:44:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:46,933 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:46,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151925094] [2022-02-14 19:44:46,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151925094] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:46,934 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:46,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-14 19:44:46,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971769843] [2022-02-14 19:44:46,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:46,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-14 19:44:46,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:46,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-14 19:44:46,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-14 19:44:46,936 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) [2022-02-14 19:44:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:48,047 INFO L93 Difference]: Finished difference Result 529 states and 653 transitions. [2022-02-14 19:44:48,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:44:48,048 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 [2022-02-14 19:44:48,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:48,050 INFO L225 Difference]: With dead ends: 529 [2022-02-14 19:44:48,050 INFO L226 Difference]: Without dead ends: 505 [2022-02-14 19:44:48,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-02-14 19:44:48,050 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 671 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:48,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 972 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-14 19:44:48,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-02-14 19:44:48,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 489. [2022-02-14 19:44:48,104 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) [2022-02-14 19:44:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 604 transitions. [2022-02-14 19:44:48,105 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 604 transitions. Word has length 63 [2022-02-14 19:44:48,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:48,105 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 604 transitions. [2022-02-14 19:44:48,106 INFO L471 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) [2022-02-14 19:44:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 604 transitions. [2022-02-14 19:44:48,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-14 19:44:48,106 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:48,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:48,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-14 19:44:48,107 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:48,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:48,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1834799191, now seen corresponding path program 1 times [2022-02-14 19:44:48,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:48,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3251383] [2022-02-14 19:44:48,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:48,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:48,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:48,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:48,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:44:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:48,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:48,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:48,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3251383] [2022-02-14 19:44:48,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3251383] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:48,258 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:48,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-14 19:44:48,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181737719] [2022-02-14 19:44:48,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:48,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 19:44:48,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:48,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 19:44:48,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-02-14 19:44:48,259 INFO L87 Difference]: Start difference. First operand 489 states and 604 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) [2022-02-14 19:44:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:49,139 INFO L93 Difference]: Finished difference Result 522 states and 642 transitions. [2022-02-14 19:44:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:44:49,140 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 [2022-02-14 19:44:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:49,142 INFO L225 Difference]: With dead ends: 522 [2022-02-14 19:44:49,142 INFO L226 Difference]: Without dead ends: 501 [2022-02-14 19:44:49,142 INFO L932 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 [2022-02-14 19:44:49,142 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 357 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:49,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 1563 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-14 19:44:49,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-02-14 19:44:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 485. [2022-02-14 19:44:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 381 states have (on average 1.2388451443569555) internal successors, (472), 388 states have internal predecessors, (472), 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) [2022-02-14 19:44:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 598 transitions. [2022-02-14 19:44:49,181 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 598 transitions. Word has length 63 [2022-02-14 19:44:49,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:49,181 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 598 transitions. [2022-02-14 19:44:49,181 INFO L471 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) [2022-02-14 19:44:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 598 transitions. [2022-02-14 19:44:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-14 19:44:49,182 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:49,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:49,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-14 19:44:49,183 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:49,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2018781837, now seen corresponding path program 1 times [2022-02-14 19:44:49,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:49,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471596321] [2022-02-14 19:44:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:49,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:49,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:49,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-14 19:44:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:49,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:44:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:49,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:49,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:44:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:49,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:49,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471596321] [2022-02-14 19:44:49,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471596321] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:49,370 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:49,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-14 19:44:49,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719689219] [2022-02-14 19:44:49,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:49,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-14 19:44:49,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:49,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-14 19:44:49,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-14 19:44:49,371 INFO L87 Difference]: Start difference. First operand 485 states and 598 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) [2022-02-14 19:44:50,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:50,436 INFO L93 Difference]: Finished difference Result 746 states and 929 transitions. [2022-02-14 19:44:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-14 19:44:50,436 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 [2022-02-14 19:44:50,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:50,438 INFO L225 Difference]: With dead ends: 746 [2022-02-14 19:44:50,438 INFO L226 Difference]: Without dead ends: 520 [2022-02-14 19:44:50,439 INFO L932 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 [2022-02-14 19:44:50,439 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 298 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:50,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1356 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-14 19:44:50,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-02-14 19:44:50,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 485. [2022-02-14 19:44:50,478 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) [2022-02-14 19:44:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 596 transitions. [2022-02-14 19:44:50,479 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 596 transitions. Word has length 71 [2022-02-14 19:44:50,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:50,479 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 596 transitions. [2022-02-14 19:44:50,479 INFO L471 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) [2022-02-14 19:44:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 596 transitions. [2022-02-14 19:44:50,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-14 19:44:50,480 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:50,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:50,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-14 19:44:50,481 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:50,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:50,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2107854790, now seen corresponding path program 1 times [2022-02-14 19:44:50,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:50,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167888225] [2022-02-14 19:44:50,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:50,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:50,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:50,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:50,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-14 19:44:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:50,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:50,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167888225] [2022-02-14 19:44:50,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167888225] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:50,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:50,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-14 19:44:50,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666555151] [2022-02-14 19:44:50,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:50,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-14 19:44:50,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:50,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-14 19:44:50,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-14 19:44:50,657 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) [2022-02-14 19:44:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:51,526 INFO L93 Difference]: Finished difference Result 512 states and 627 transitions. [2022-02-14 19:44:51,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:44:51,526 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 [2022-02-14 19:44:51,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:51,527 INFO L225 Difference]: With dead ends: 512 [2022-02-14 19:44:51,527 INFO L226 Difference]: Without dead ends: 490 [2022-02-14 19:44:51,528 INFO L932 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 [2022-02-14 19:44:51,528 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 642 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:51,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 1479 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-14 19:44:51,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-02-14 19:44:51,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 474. [2022-02-14 19:44:51,566 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) [2022-02-14 19:44:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 581 transitions. [2022-02-14 19:44:51,567 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 581 transitions. Word has length 64 [2022-02-14 19:44:51,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:51,567 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 581 transitions. [2022-02-14 19:44:51,567 INFO L471 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) [2022-02-14 19:44:51,567 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 581 transitions. [2022-02-14 19:44:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-14 19:44:51,568 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:51,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:51,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-14 19:44:51,568 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:51,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:51,568 INFO L85 PathProgramCache]: Analyzing trace with hash 245569005, now seen corresponding path program 1 times [2022-02-14 19:44:51,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:51,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101993170] [2022-02-14 19:44:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:51,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:51,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:44:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:51,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:44:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:51,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:51,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101993170] [2022-02-14 19:44:51,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101993170] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:51,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:51,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-14 19:44:51,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047138611] [2022-02-14 19:44:51,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:51,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 19:44:51,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:51,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 19:44:51,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-02-14 19:44:51,727 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) [2022-02-14 19:44:52,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:52,569 INFO L93 Difference]: Finished difference Result 507 states and 619 transitions. [2022-02-14 19:44:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:44:52,569 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 [2022-02-14 19:44:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:52,570 INFO L225 Difference]: With dead ends: 507 [2022-02-14 19:44:52,571 INFO L226 Difference]: Without dead ends: 485 [2022-02-14 19:44:52,571 INFO L932 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 [2022-02-14 19:44:52,571 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 389 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:52,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 1502 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-14 19:44:52,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-02-14 19:44:52,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 469. [2022-02-14 19:44:52,623 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) [2022-02-14 19:44:52,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 574 transitions. [2022-02-14 19:44:52,624 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 574 transitions. Word has length 64 [2022-02-14 19:44:52,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:52,624 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 574 transitions. [2022-02-14 19:44:52,625 INFO L471 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) [2022-02-14 19:44:52,625 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 574 transitions. [2022-02-14 19:44:52,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-14 19:44:52,625 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:52,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:52,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-14 19:44:52,626 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:52,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:52,626 INFO L85 PathProgramCache]: Analyzing trace with hash -684542465, now seen corresponding path program 1 times [2022-02-14 19:44:52,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:52,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235681466] [2022-02-14 19:44:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:52,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:52,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:44:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:52,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:44:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:52,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:52,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235681466] [2022-02-14 19:44:52,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235681466] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:52,787 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:52,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-14 19:44:52,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326463625] [2022-02-14 19:44:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:52,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 19:44:52,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 19:44:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-02-14 19:44:52,788 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) [2022-02-14 19:44:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:53,723 INFO L93 Difference]: Finished difference Result 502 states and 612 transitions. [2022-02-14 19:44:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:44:53,723 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 [2022-02-14 19:44:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:53,725 INFO L225 Difference]: With dead ends: 502 [2022-02-14 19:44:53,725 INFO L226 Difference]: Without dead ends: 481 [2022-02-14 19:44:53,725 INFO L932 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 [2022-02-14 19:44:53,726 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 291 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:53,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 1490 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-14 19:44:53,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-02-14 19:44:53,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 465. [2022-02-14 19:44:53,763 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) [2022-02-14 19:44:53,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 568 transitions. [2022-02-14 19:44:53,764 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 568 transitions. Word has length 64 [2022-02-14 19:44:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:53,764 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 568 transitions. [2022-02-14 19:44:53,764 INFO L471 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) [2022-02-14 19:44:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 568 transitions. [2022-02-14 19:44:53,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-14 19:44:53,765 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:53,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:53,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-14 19:44:53,765 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:53,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:53,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1161284456, now seen corresponding path program 1 times [2022-02-14 19:44:53,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:53,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922666571] [2022-02-14 19:44:53,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:53,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:53,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:53,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:53,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-14 19:44:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:44:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:44:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:53,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:53,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922666571] [2022-02-14 19:44:53,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922666571] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:53,896 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:53,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-14 19:44:53,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718602874] [2022-02-14 19:44:53,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:53,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-14 19:44:53,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:53,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-14 19:44:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-14 19:44:53,897 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) [2022-02-14 19:44:54,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:54,638 INFO L93 Difference]: Finished difference Result 878 states and 1082 transitions. [2022-02-14 19:44:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 19:44:54,638 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 [2022-02-14 19:44:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:54,640 INFO L225 Difference]: With dead ends: 878 [2022-02-14 19:44:54,640 INFO L226 Difference]: Without dead ends: 625 [2022-02-14 19:44:54,641 INFO L932 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 [2022-02-14 19:44:54,641 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 569 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:54,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 812 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-14 19:44:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-02-14 19:44:54,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 586. [2022-02-14 19:44:54,687 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) [2022-02-14 19:44:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 716 transitions. [2022-02-14 19:44:54,688 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 716 transitions. Word has length 70 [2022-02-14 19:44:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:54,688 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 716 transitions. [2022-02-14 19:44:54,688 INFO L471 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) [2022-02-14 19:44:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 716 transitions. [2022-02-14 19:44:54,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-14 19:44:54,689 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:54,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:54,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-14 19:44:54,689 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:54,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:54,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1771054254, now seen corresponding path program 1 times [2022-02-14 19:44:54,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:54,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69074634] [2022-02-14 19:44:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:54,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:54,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:54,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:54,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:54,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:44:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:54,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-14 19:44:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:54,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:54,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69074634] [2022-02-14 19:44:54,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69074634] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:54,853 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:54,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-14 19:44:54,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468948766] [2022-02-14 19:44:54,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:54,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 19:44:54,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:54,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 19:44:54,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-02-14 19:44:54,854 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) [2022-02-14 19:44:55,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:55,753 INFO L93 Difference]: Finished difference Result 619 states and 755 transitions. [2022-02-14 19:44:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:44:55,753 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 [2022-02-14 19:44:55,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:55,755 INFO L225 Difference]: With dead ends: 619 [2022-02-14 19:44:55,755 INFO L226 Difference]: Without dead ends: 576 [2022-02-14 19:44:55,755 INFO L932 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 [2022-02-14 19:44:55,755 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 335 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:55,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 1499 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-14 19:44:55,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-02-14 19:44:55,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 560. [2022-02-14 19:44:55,799 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) [2022-02-14 19:44:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 684 transitions. [2022-02-14 19:44:55,800 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 684 transitions. Word has length 68 [2022-02-14 19:44:55,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:55,801 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 684 transitions. [2022-02-14 19:44:55,801 INFO L471 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) [2022-02-14 19:44:55,801 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 684 transitions. [2022-02-14 19:44:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-14 19:44:55,801 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:55,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:55,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-14 19:44:55,802 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:55,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash -699513037, now seen corresponding path program 1 times [2022-02-14 19:44:55,802 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:55,802 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341491215] [2022-02-14 19:44:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:55,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:55,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:55,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:55,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:55,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-14 19:44:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:55,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:44:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:55,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:44:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-14 19:44:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:56,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:56,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341491215] [2022-02-14 19:44:56,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341491215] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:56,005 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:56,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-14 19:44:56,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517914859] [2022-02-14 19:44:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:56,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-14 19:44:56,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-14 19:44:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-02-14 19:44:56,006 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) [2022-02-14 19:44:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:57,201 INFO L93 Difference]: Finished difference Result 589 states and 718 transitions. [2022-02-14 19:44:57,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-14 19:44:57,203 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 [2022-02-14 19:44:57,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:57,204 INFO L225 Difference]: With dead ends: 589 [2022-02-14 19:44:57,204 INFO L226 Difference]: Without dead ends: 535 [2022-02-14 19:44:57,205 INFO L932 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 [2022-02-14 19:44:57,205 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 353 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 2725 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:57,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 891 Invalid, 2825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2725 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-14 19:44:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-02-14 19:44:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 519. [2022-02-14 19:44:57,247 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) [2022-02-14 19:44:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 632 transitions. [2022-02-14 19:44:57,248 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 632 transitions. Word has length 71 [2022-02-14 19:44:57,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:57,248 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 632 transitions. [2022-02-14 19:44:57,248 INFO L471 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) [2022-02-14 19:44:57,248 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 632 transitions. [2022-02-14 19:44:57,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-14 19:44:57,249 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:57,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:57,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-14 19:44:57,249 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:57,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:57,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1796970753, now seen corresponding path program 1 times [2022-02-14 19:44:57,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:57,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619507222] [2022-02-14 19:44:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:57,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:57,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:57,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:57,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-14 19:44:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:57,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:44:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:57,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:44:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:57,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-02-14 19:44:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:57,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:57,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619507222] [2022-02-14 19:44:57,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619507222] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:57,413 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:57,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-14 19:44:57,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891828388] [2022-02-14 19:44:57,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:57,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-14 19:44:57,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:57,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-14 19:44:57,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-02-14 19:44:57,414 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) [2022-02-14 19:44:58,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:58,070 INFO L93 Difference]: Finished difference Result 840 states and 1028 transitions. [2022-02-14 19:44:58,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-14 19:44:58,070 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 [2022-02-14 19:44:58,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:58,072 INFO L225 Difference]: With dead ends: 840 [2022-02-14 19:44:58,072 INFO L226 Difference]: Without dead ends: 523 [2022-02-14 19:44:58,073 INFO L932 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 [2022-02-14 19:44:58,073 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 457 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:58,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1130 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-14 19:44:58,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-02-14 19:44:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 501. [2022-02-14 19:44:58,123 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) [2022-02-14 19:44:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 602 transitions. [2022-02-14 19:44:58,124 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 602 transitions. Word has length 82 [2022-02-14 19:44:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:58,124 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 602 transitions. [2022-02-14 19:44:58,124 INFO L471 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) [2022-02-14 19:44:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 602 transitions. [2022-02-14 19:44:58,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-14 19:44:58,125 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:58,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:58,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-14 19:44:58,125 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2026941125, now seen corresponding path program 1 times [2022-02-14 19:44:58,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:58,125 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222176400] [2022-02-14 19:44:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:58,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:58,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:58,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:58,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-14 19:44:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:44:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:58,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:44:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:58,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-02-14 19:44:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:58,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:58,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:58,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222176400] [2022-02-14 19:44:58,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222176400] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:58,301 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:58,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-14 19:44:58,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498362582] [2022-02-14 19:44:58,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:58,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 19:44:58,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:58,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 19:44:58,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-14 19:44:58,302 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) [2022-02-14 19:44:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:44:59,071 INFO L93 Difference]: Finished difference Result 839 states and 1046 transitions. [2022-02-14 19:44:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-14 19:44:59,072 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 [2022-02-14 19:44:59,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:44:59,073 INFO L225 Difference]: With dead ends: 839 [2022-02-14 19:44:59,073 INFO L226 Difference]: Without dead ends: 585 [2022-02-14 19:44:59,074 INFO L932 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 [2022-02-14 19:44:59,074 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 448 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-14 19:44:59,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1541 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-14 19:44:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-02-14 19:44:59,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 465. [2022-02-14 19:44:59,112 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) [2022-02-14 19:44:59,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 556 transitions. [2022-02-14 19:44:59,113 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 556 transitions. Word has length 83 [2022-02-14 19:44:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:44:59,113 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 556 transitions. [2022-02-14 19:44:59,113 INFO L471 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) [2022-02-14 19:44:59,113 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 556 transitions. [2022-02-14 19:44:59,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-14 19:44:59,114 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:44:59,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:44:59,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-14 19:44:59,114 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:44:59,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:44:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash -564339607, now seen corresponding path program 1 times [2022-02-14 19:44:59,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:44:59,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294101845] [2022-02-14 19:44:59,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:44:59,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:44:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:44:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:59,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:44:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:59,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:44:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:59,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:44:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:59,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:44:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:44:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:59,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:44:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:59,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:44:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:59,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-14 19:44:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:44:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:44:59,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:44:59,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294101845] [2022-02-14 19:44:59,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294101845] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:44:59,304 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:44:59,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-14 19:44:59,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118220999] [2022-02-14 19:44:59,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:44:59,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-14 19:44:59,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:44:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-14 19:44:59,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-02-14 19:44:59,305 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) [2022-02-14 19:45:00,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:00,121 INFO L93 Difference]: Finished difference Result 526 states and 629 transitions. [2022-02-14 19:45:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-14 19:45:00,121 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 [2022-02-14 19:45:00,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:00,124 INFO L225 Difference]: With dead ends: 526 [2022-02-14 19:45:00,124 INFO L226 Difference]: Without dead ends: 505 [2022-02-14 19:45:00,124 INFO L932 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 [2022-02-14 19:45:00,125 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 463 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:00,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1550 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-14 19:45:00,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-02-14 19:45:00,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 473. [2022-02-14 19:45:00,161 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) [2022-02-14 19:45:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 566 transitions. [2022-02-14 19:45:00,162 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 566 transitions. Word has length 88 [2022-02-14 19:45:00,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:00,162 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 566 transitions. [2022-02-14 19:45:00,162 INFO L471 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) [2022-02-14 19:45:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 566 transitions. [2022-02-14 19:45:00,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-02-14 19:45:00,163 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:00,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:45:00,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-14 19:45:00,163 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:00,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:00,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1551103562, now seen corresponding path program 1 times [2022-02-14 19:45:00,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:00,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779692708] [2022-02-14 19:45:00,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:00,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:00,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:00,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:00,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:00,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:00,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:00,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-14 19:45:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:45:00,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:00,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779692708] [2022-02-14 19:45:00,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779692708] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:00,357 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:00,357 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-14 19:45:00,357 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334814388] [2022-02-14 19:45:00,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:00,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-14 19:45:00,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:00,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-14 19:45:00,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-02-14 19:45:00,358 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) [2022-02-14 19:45:01,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:01,132 INFO L93 Difference]: Finished difference Result 526 states and 628 transitions. [2022-02-14 19:45:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-14 19:45:01,133 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 [2022-02-14 19:45:01,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:01,134 INFO L225 Difference]: With dead ends: 526 [2022-02-14 19:45:01,134 INFO L226 Difference]: Without dead ends: 505 [2022-02-14 19:45:01,135 INFO L932 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 [2022-02-14 19:45:01,135 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 343 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:01,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 1702 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-14 19:45:01,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-02-14 19:45:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 465. [2022-02-14 19:45:01,172 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) [2022-02-14 19:45:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 555 transitions. [2022-02-14 19:45:01,173 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 555 transitions. Word has length 89 [2022-02-14 19:45:01,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:01,173 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 555 transitions. [2022-02-14 19:45:01,173 INFO L471 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) [2022-02-14 19:45:01,173 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 555 transitions. [2022-02-14 19:45:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-02-14 19:45:01,174 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:01,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:45:01,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-14 19:45:01,174 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:01,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:01,175 INFO L85 PathProgramCache]: Analyzing trace with hash 945867422, now seen corresponding path program 1 times [2022-02-14 19:45:01,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:01,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916634020] [2022-02-14 19:45:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:01,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:01,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:01,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:01,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:01,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-14 19:45:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:01,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:45:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:01,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-14 19:45:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:01,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-14 19:45:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:45:01,338 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:01,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916634020] [2022-02-14 19:45:01,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916634020] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:01,338 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:01,338 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-14 19:45:01,338 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870752268] [2022-02-14 19:45:01,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:01,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-14 19:45:01,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:01,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-14 19:45:01,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-02-14 19:45:01,339 INFO L87 Difference]: Start difference. First operand 465 states and 555 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 5 states have internal predecessors, (74), 5 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-02-14 19:45:02,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:02,336 INFO L93 Difference]: Finished difference Result 910 states and 1073 transitions. [2022-02-14 19:45:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-14 19:45:02,336 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 5 states have internal predecessors, (74), 5 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 92 [2022-02-14 19:45:02,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:02,338 INFO L225 Difference]: With dead ends: 910 [2022-02-14 19:45:02,338 INFO L226 Difference]: Without dead ends: 611 [2022-02-14 19:45:02,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-02-14 19:45:02,339 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 622 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:02,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 517 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-14 19:45:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-02-14 19:45:02,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 586. [2022-02-14 19:45:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 462 states have (on average 1.2034632034632036) internal successors, (556), 470 states have internal predecessors, (556), 61 states have call successors, (61), 53 states have call predecessors, (61), 62 states have return successors, (72), 63 states have call predecessors, (72), 57 states have call successors, (72) [2022-02-14 19:45:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 689 transitions. [2022-02-14 19:45:02,388 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 689 transitions. Word has length 92 [2022-02-14 19:45:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:02,388 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 689 transitions. [2022-02-14 19:45:02,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 5 states have internal predecessors, (74), 5 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-02-14 19:45:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 689 transitions. [2022-02-14 19:45:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-14 19:45:02,389 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:02,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:45:02,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-14 19:45:02,389 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:02,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:02,390 INFO L85 PathProgramCache]: Analyzing trace with hash 680283571, now seen corresponding path program 1 times [2022-02-14 19:45:02,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:02,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687717803] [2022-02-14 19:45:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:02,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:02,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:02,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:02,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-02-14 19:45:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:02,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:45:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:02,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-14 19:45:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:02,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-14 19:45:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:45:02,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:02,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687717803] [2022-02-14 19:45:02,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687717803] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:02,603 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:02,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-14 19:45:02,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548061266] [2022-02-14 19:45:02,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:02,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-14 19:45:02,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:02,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-14 19:45:02,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-02-14 19:45:02,604 INFO L87 Difference]: Start difference. First operand 586 states and 689 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) [2022-02-14 19:45:03,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:03,466 INFO L93 Difference]: Finished difference Result 590 states and 692 transitions. [2022-02-14 19:45:03,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-14 19:45:03,467 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 [2022-02-14 19:45:03,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:03,468 INFO L225 Difference]: With dead ends: 590 [2022-02-14 19:45:03,468 INFO L226 Difference]: Without dead ends: 498 [2022-02-14 19:45:03,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2022-02-14 19:45:03,469 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 415 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:03,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 644 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-14 19:45:03,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-02-14 19:45:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 496. [2022-02-14 19:45:03,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 387 states have (on average 1.20671834625323) internal successors, (467), 394 states have internal predecessors, (467), 54 states have call successors, (54), 47 states have call predecessors, (54), 54 states have return successors, (64), 55 states have call predecessors, (64), 51 states have call successors, (64) [2022-02-14 19:45:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 585 transitions. [2022-02-14 19:45:03,522 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 585 transitions. Word has length 93 [2022-02-14 19:45:03,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:03,523 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 585 transitions. [2022-02-14 19:45:03,523 INFO L471 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) [2022-02-14 19:45:03,523 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 585 transitions. [2022-02-14 19:45:03,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-02-14 19:45:03,523 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:03,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:45:03,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-14 19:45:03,524 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:03,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:03,524 INFO L85 PathProgramCache]: Analyzing trace with hash 313967105, now seen corresponding path program 1 times [2022-02-14 19:45:03,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:03,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501381031] [2022-02-14 19:45:03,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:03,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:03,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:03,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:03,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:03,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:03,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:03,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-14 19:45:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:03,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-14 19:45:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:45:03,700 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:03,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501381031] [2022-02-14 19:45:03,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501381031] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:03,700 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:03,700 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-14 19:45:03,700 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775640137] [2022-02-14 19:45:03,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:03,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 19:45:03,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:03,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 19:45:03,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-02-14 19:45:03,701 INFO L87 Difference]: Start difference. First operand 496 states and 585 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 5 states have internal predecessors, (77), 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) [2022-02-14 19:45:04,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:04,095 INFO L93 Difference]: Finished difference Result 531 states and 619 transitions. [2022-02-14 19:45:04,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 19:45:04,096 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 5 states have internal predecessors, (77), 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 99 [2022-02-14 19:45:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:04,097 INFO L225 Difference]: With dead ends: 531 [2022-02-14 19:45:04,097 INFO L226 Difference]: Without dead ends: 492 [2022-02-14 19:45:04,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-14 19:45:04,111 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 220 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:04,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 991 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-14 19:45:04,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-02-14 19:45:04,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 439. [2022-02-14 19:45:04,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 343 states have (on average 1.19533527696793) internal successors, (410), 349 states have internal predecessors, (410), 47 states have call successors, (47), 42 states have call predecessors, (47), 48 states have return successors, (55), 48 states have call predecessors, (55), 44 states have call successors, (55) [2022-02-14 19:45:04,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 512 transitions. [2022-02-14 19:45:04,151 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 512 transitions. Word has length 99 [2022-02-14 19:45:04,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:04,151 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 512 transitions. [2022-02-14 19:45:04,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 5 states have internal predecessors, (77), 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) [2022-02-14 19:45:04,151 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 512 transitions. [2022-02-14 19:45:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-02-14 19:45:04,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:04,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:45:04,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-14 19:45:04,152 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:04,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1018925480, now seen corresponding path program 1 times [2022-02-14 19:45:04,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:04,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747369385] [2022-02-14 19:45:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:04,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:04,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:04,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:04,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:04,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:04,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:04,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:04,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-14 19:45:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-14 19:45:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:45:04,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:04,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747369385] [2022-02-14 19:45:04,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747369385] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:04,350 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:04,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-14 19:45:04,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504567810] [2022-02-14 19:45:04,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:04,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-14 19:45:04,350 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:04,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-14 19:45:04,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-02-14 19:45:04,351 INFO L87 Difference]: Start difference. First operand 439 states and 512 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) [2022-02-14 19:45:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:05,259 INFO L93 Difference]: Finished difference Result 842 states and 986 transitions. [2022-02-14 19:45:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-14 19:45:05,259 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 [2022-02-14 19:45:05,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:05,261 INFO L225 Difference]: With dead ends: 842 [2022-02-14 19:45:05,261 INFO L226 Difference]: Without dead ends: 797 [2022-02-14 19:45:05,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2022-02-14 19:45:05,262 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 414 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:05,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 1636 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-14 19:45:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-02-14 19:45:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 419. [2022-02-14 19:45:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 327 states have (on average 1.1957186544342508) internal successors, (391), 332 states have internal predecessors, (391), 44 states have call successors, (44), 41 states have call predecessors, (44), 47 states have return successors, (52), 45 states have call predecessors, (52), 41 states have call successors, (52) [2022-02-14 19:45:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 487 transitions. [2022-02-14 19:45:05,306 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 487 transitions. Word has length 99 [2022-02-14 19:45:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:05,306 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 487 transitions. [2022-02-14 19:45:05,306 INFO L471 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) [2022-02-14 19:45:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 487 transitions. [2022-02-14 19:45:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-14 19:45:05,307 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:05,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:45:05,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-14 19:45:05,307 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:05,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:05,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1434876468, now seen corresponding path program 1 times [2022-02-14 19:45:05,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:05,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523267732] [2022-02-14 19:45:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-14 19:45:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:45:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-14 19:45:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-14 19:45:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:45:05,606 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:05,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523267732] [2022-02-14 19:45:05,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523267732] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:05,606 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:05,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-14 19:45:05,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118945885] [2022-02-14 19:45:05,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:05,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-14 19:45:05,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-14 19:45:05,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-02-14 19:45:05,608 INFO L87 Difference]: Start difference. First operand 419 states and 487 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) [2022-02-14 19:45:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:06,217 INFO L93 Difference]: Finished difference Result 561 states and 656 transitions. [2022-02-14 19:45:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-14 19:45:06,217 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 [2022-02-14 19:45:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:06,225 INFO L225 Difference]: With dead ends: 561 [2022-02-14 19:45:06,225 INFO L226 Difference]: Without dead ends: 438 [2022-02-14 19:45:06,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-02-14 19:45:06,226 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 176 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:06,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1148 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-14 19:45:06,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-02-14 19:45:06,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 428. [2022-02-14 19:45:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 335 states have (on average 1.182089552238806) internal successors, (396), 341 states have internal predecessors, (396), 45 states have call successors, (45), 41 states have call predecessors, (45), 47 states have return successors, (52), 45 states have call predecessors, (52), 41 states have call successors, (52) [2022-02-14 19:45:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 493 transitions. [2022-02-14 19:45:06,272 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 493 transitions. Word has length 104 [2022-02-14 19:45:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:06,273 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 493 transitions. [2022-02-14 19:45:06,273 INFO L471 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) [2022-02-14 19:45:06,273 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 493 transitions. [2022-02-14 19:45:06,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-14 19:45:06,273 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:06,274 INFO L514 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] [2022-02-14 19:45:06,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-14 19:45:06,274 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:06,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash -679170353, now seen corresponding path program 1 times [2022-02-14 19:45:06,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:06,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474361308] [2022-02-14 19:45:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:06,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-14 19:45:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-14 19:45:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:45:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-14 19:45:06,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:06,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474361308] [2022-02-14 19:45:06,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474361308] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:06,448 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:06,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-14 19:45:06,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439298147] [2022-02-14 19:45:06,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:06,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-14 19:45:06,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:06,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-14 19:45:06,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-02-14 19:45:06,449 INFO L87 Difference]: Start difference. First operand 428 states and 493 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-02-14 19:45:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:06,880 INFO L93 Difference]: Finished difference Result 749 states and 870 transitions. [2022-02-14 19:45:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 19:45:06,880 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 113 [2022-02-14 19:45:06,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:06,881 INFO L225 Difference]: With dead ends: 749 [2022-02-14 19:45:06,881 INFO L226 Difference]: Without dead ends: 440 [2022-02-14 19:45:06,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-02-14 19:45:06,882 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 137 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:06,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 698 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-14 19:45:06,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-02-14 19:45:06,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 436. [2022-02-14 19:45:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 341 states have (on average 1.1788856304985338) internal successors, (402), 347 states have internal predecessors, (402), 45 states have call successors, (45), 41 states have call predecessors, (45), 49 states have return successors, (54), 47 states have call predecessors, (54), 41 states have call successors, (54) [2022-02-14 19:45:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 501 transitions. [2022-02-14 19:45:06,926 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 501 transitions. Word has length 113 [2022-02-14 19:45:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:06,926 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 501 transitions. [2022-02-14 19:45:06,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 10 states have call predecessors, (15), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-02-14 19:45:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 501 transitions. [2022-02-14 19:45:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-02-14 19:45:06,927 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:06,927 INFO L514 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] [2022-02-14 19:45:06,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-14 19:45:06,928 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:06,928 INFO L85 PathProgramCache]: Analyzing trace with hash 857265326, now seen corresponding path program 1 times [2022-02-14 19:45:06,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:06,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253661293] [2022-02-14 19:45:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:06,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:06,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-14 19:45:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-14 19:45:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:45:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-02-14 19:45:07,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:07,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253661293] [2022-02-14 19:45:07,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253661293] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:07,117 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:07,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-14 19:45:07,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519240149] [2022-02-14 19:45:07,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:07,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 19:45:07,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 19:45:07,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-14 19:45:07,118 INFO L87 Difference]: Start difference. First operand 436 states and 501 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) [2022-02-14 19:45:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:07,483 INFO L93 Difference]: Finished difference Result 471 states and 535 transitions. [2022-02-14 19:45:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-14 19:45:07,484 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 [2022-02-14 19:45:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:07,485 INFO L225 Difference]: With dead ends: 471 [2022-02-14 19:45:07,485 INFO L226 Difference]: Without dead ends: 387 [2022-02-14 19:45:07,485 INFO L932 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 [2022-02-14 19:45:07,486 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 217 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:07,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 805 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-14 19:45:07,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-02-14 19:45:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 249. [2022-02-14 19:45:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 195 states have (on average 1.1384615384615384) internal successors, (222), 197 states have internal predecessors, (222), 26 states have call successors, (26), 26 states have call predecessors, (26), 27 states have return successors, (27), 25 states have call predecessors, (27), 24 states have call successors, (27) [2022-02-14 19:45:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 275 transitions. [2022-02-14 19:45:07,517 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 275 transitions. Word has length 113 [2022-02-14 19:45:07,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:07,517 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 275 transitions. [2022-02-14 19:45:07,517 INFO L471 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) [2022-02-14 19:45:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 275 transitions. [2022-02-14 19:45:07,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-14 19:45:07,518 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:07,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:45:07,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-14 19:45:07,518 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:07,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2021247887, now seen corresponding path program 1 times [2022-02-14 19:45:07,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:07,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192311180] [2022-02-14 19:45:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-14 19:45:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:45:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-14 19:45:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-14 19:45:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-02-14 19:45:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:45:07,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:07,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192311180] [2022-02-14 19:45:07,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192311180] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:07,731 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:07,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-14 19:45:07,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313722632] [2022-02-14 19:45:07,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:07,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-14 19:45:07,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:07,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-14 19:45:07,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-02-14 19:45:07,732 INFO L87 Difference]: Start difference. First operand 249 states and 275 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) [2022-02-14 19:45:08,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:08,157 INFO L93 Difference]: Finished difference Result 293 states and 322 transitions. [2022-02-14 19:45:08,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 19:45:08,157 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 [2022-02-14 19:45:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:08,158 INFO L225 Difference]: With dead ends: 293 [2022-02-14 19:45:08,158 INFO L226 Difference]: Without dead ends: 263 [2022-02-14 19:45:08,158 INFO L932 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 [2022-02-14 19:45:08,158 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 195 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:08,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 776 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-14 19:45:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-02-14 19:45:08,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 253. [2022-02-14 19:45:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 198 states have (on average 1.1363636363636365) internal successors, (225), 200 states have internal predecessors, (225), 26 states have call successors, (26), 26 states have call predecessors, (26), 28 states have return successors, (28), 26 states have call predecessors, (28), 24 states have call successors, (28) [2022-02-14 19:45:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 279 transitions. [2022-02-14 19:45:08,193 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 279 transitions. Word has length 120 [2022-02-14 19:45:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:08,194 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 279 transitions. [2022-02-14 19:45:08,194 INFO L471 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) [2022-02-14 19:45:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 279 transitions. [2022-02-14 19:45:08,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-14 19:45:08,194 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:08,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 19:45:08,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-14 19:45:08,195 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:08,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:08,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2092232912, now seen corresponding path program 1 times [2022-02-14 19:45:08,195 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:08,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794988405] [2022-02-14 19:45:08,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:08,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-14 19:45:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:45:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-14 19:45:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-14 19:45:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-02-14 19:45:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 19:45:08,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:08,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794988405] [2022-02-14 19:45:08,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794988405] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:08,398 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:08,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-14 19:45:08,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530663231] [2022-02-14 19:45:08,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:08,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-14 19:45:08,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:08,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-14 19:45:08,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-02-14 19:45:08,399 INFO L87 Difference]: Start difference. First operand 253 states and 279 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) [2022-02-14 19:45:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:08,877 INFO L93 Difference]: Finished difference Result 339 states and 377 transitions. [2022-02-14 19:45:08,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 19:45:08,878 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 [2022-02-14 19:45:08,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:08,878 INFO L225 Difference]: With dead ends: 339 [2022-02-14 19:45:08,878 INFO L226 Difference]: Without dead ends: 254 [2022-02-14 19:45:08,879 INFO L932 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 [2022-02-14 19:45:08,879 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 119 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:08,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 741 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-14 19:45:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-02-14 19:45:08,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2022-02-14 19:45:08,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 194 states have (on average 1.1288659793814433) internal successors, (219), 196 states have internal predecessors, (219), 26 states have call successors, (26), 26 states have call predecessors, (26), 27 states have return successors, (27), 25 states have call predecessors, (27), 24 states have call successors, (27) [2022-02-14 19:45:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 272 transitions. [2022-02-14 19:45:08,908 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 272 transitions. Word has length 120 [2022-02-14 19:45:08,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:08,908 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 272 transitions. [2022-02-14 19:45:08,908 INFO L471 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) [2022-02-14 19:45:08,908 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 272 transitions. [2022-02-14 19:45:08,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-02-14 19:45:08,909 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:08,909 INFO L514 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] [2022-02-14 19:45:08,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-14 19:45:08,909 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:08,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:08,909 INFO L85 PathProgramCache]: Analyzing trace with hash 90302461, now seen corresponding path program 1 times [2022-02-14 19:45:08,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:08,910 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937358744] [2022-02-14 19:45:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:08,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:08,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-14 19:45:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:45:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-14 19:45:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:45:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-02-14 19:45:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-14 19:45:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-02-14 19:45:09,290 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:09,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937358744] [2022-02-14 19:45:09,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937358744] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:09,290 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:09,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-14 19:45:09,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388347336] [2022-02-14 19:45:09,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:09,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-14 19:45:09,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:09,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-14 19:45:09,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-02-14 19:45:09,291 INFO L87 Difference]: Start difference. First operand 248 states and 272 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) [2022-02-14 19:45:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:10,077 INFO L93 Difference]: Finished difference Result 320 states and 360 transitions. [2022-02-14 19:45:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-14 19:45:10,077 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 [2022-02-14 19:45:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:10,078 INFO L225 Difference]: With dead ends: 320 [2022-02-14 19:45:10,078 INFO L226 Difference]: Without dead ends: 285 [2022-02-14 19:45:10,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-02-14 19:45:10,078 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 239 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:10,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 1433 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-14 19:45:10,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-02-14 19:45:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 265. [2022-02-14 19:45:10,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 209 states have (on average 1.138755980861244) internal successors, (238), 211 states have internal predecessors, (238), 26 states have call successors, (26), 26 states have call predecessors, (26), 29 states have return successors, (29), 27 states have call predecessors, (29), 24 states have call successors, (29) [2022-02-14 19:45:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 293 transitions. [2022-02-14 19:45:10,107 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 293 transitions. Word has length 150 [2022-02-14 19:45:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:10,108 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 293 transitions. [2022-02-14 19:45:10,108 INFO L471 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) [2022-02-14 19:45:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 293 transitions. [2022-02-14 19:45:10,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-14 19:45:10,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:10,109 INFO L514 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] [2022-02-14 19:45:10,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-14 19:45:10,109 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:10,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:10,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1191115682, now seen corresponding path program 1 times [2022-02-14 19:45:10,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:10,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461337061] [2022-02-14 19:45:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:10,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-14 19:45:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:45:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-14 19:45:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:45:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-14 19:45:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-14 19:45:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-02-14 19:45:10,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:10,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461337061] [2022-02-14 19:45:10,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461337061] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:10,382 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:10,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-14 19:45:10,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742029161] [2022-02-14 19:45:10,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:10,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-14 19:45:10,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-14 19:45:10,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-02-14 19:45:10,383 INFO L87 Difference]: Start difference. First operand 265 states and 293 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) [2022-02-14 19:45:10,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:10,876 INFO L93 Difference]: Finished difference Result 360 states and 402 transitions. [2022-02-14 19:45:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-14 19:45:10,876 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 [2022-02-14 19:45:10,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:10,877 INFO L225 Difference]: With dead ends: 360 [2022-02-14 19:45:10,877 INFO L226 Difference]: Without dead ends: 279 [2022-02-14 19:45:10,877 INFO L932 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 [2022-02-14 19:45:10,878 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 214 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:10,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 1117 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-14 19:45:10,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-02-14 19:45:10,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 265. [2022-02-14 19:45:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 209 states have (on average 1.1339712918660287) internal successors, (237), 211 states have internal predecessors, (237), 26 states have call successors, (26), 26 states have call predecessors, (26), 29 states have return successors, (29), 27 states have call predecessors, (29), 24 states have call successors, (29) [2022-02-14 19:45:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 292 transitions. [2022-02-14 19:45:10,908 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 292 transitions. Word has length 151 [2022-02-14 19:45:10,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:10,909 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 292 transitions. [2022-02-14 19:45:10,909 INFO L471 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) [2022-02-14 19:45:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 292 transitions. [2022-02-14 19:45:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-02-14 19:45:10,909 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:10,910 INFO L514 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] [2022-02-14 19:45:10,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-14 19:45:10,910 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:10,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:10,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1843438784, now seen corresponding path program 1 times [2022-02-14 19:45:10,910 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:10,910 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556404892] [2022-02-14 19:45:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:10,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:10,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-14 19:45:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:45:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-14 19:45:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:45:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-14 19:45:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-14 19:45:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-14 19:45:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-02-14 19:45:11,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:11,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556404892] [2022-02-14 19:45:11,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556404892] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:11,215 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:11,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-14 19:45:11,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794525516] [2022-02-14 19:45:11,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:11,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-14 19:45:11,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:11,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-14 19:45:11,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-02-14 19:45:11,216 INFO L87 Difference]: Start difference. First operand 265 states and 292 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) [2022-02-14 19:45:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:11,834 INFO L93 Difference]: Finished difference Result 306 states and 340 transitions. [2022-02-14 19:45:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-14 19:45:11,835 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 [2022-02-14 19:45:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:11,835 INFO L225 Difference]: With dead ends: 306 [2022-02-14 19:45:11,836 INFO L226 Difference]: Without dead ends: 265 [2022-02-14 19:45:11,836 INFO L932 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 [2022-02-14 19:45:11,836 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 214 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:11,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 1169 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-14 19:45:11,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-02-14 19:45:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2022-02-14 19:45:11,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 205 states have (on average 1.1219512195121952) internal successors, (230), 207 states have internal predecessors, (230), 25 states have call successors, (25), 25 states have call predecessors, (25), 28 states have return successors, (28), 26 states have call predecessors, (28), 23 states have call successors, (28) [2022-02-14 19:45:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 283 transitions. [2022-02-14 19:45:11,865 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 283 transitions. Word has length 153 [2022-02-14 19:45:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:11,865 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 283 transitions. [2022-02-14 19:45:11,865 INFO L471 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) [2022-02-14 19:45:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 283 transitions. [2022-02-14 19:45:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-02-14 19:45:11,866 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:11,866 INFO L514 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] [2022-02-14 19:45:11,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-14 19:45:11,866 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:11,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:11,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2010865059, now seen corresponding path program 1 times [2022-02-14 19:45:11,866 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:11,866 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345970201] [2022-02-14 19:45:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:11,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:11,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-14 19:45:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:45:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-14 19:45:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:45:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-02-14 19:45:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-02-14 19:45:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-02-14 19:45:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-02-14 19:45:12,090 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:12,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345970201] [2022-02-14 19:45:12,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345970201] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:12,090 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:12,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-14 19:45:12,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677353781] [2022-02-14 19:45:12,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:12,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-14 19:45:12,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:12,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-14 19:45:12,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-02-14 19:45:12,091 INFO L87 Difference]: Start difference. First operand 259 states and 283 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) [2022-02-14 19:45:12,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:12,500 INFO L93 Difference]: Finished difference Result 320 states and 349 transitions. [2022-02-14 19:45:12,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 19:45:12,500 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 [2022-02-14 19:45:12,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:12,501 INFO L225 Difference]: With dead ends: 320 [2022-02-14 19:45:12,501 INFO L226 Difference]: Without dead ends: 245 [2022-02-14 19:45:12,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2022-02-14 19:45:12,501 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 289 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:12,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 558 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-14 19:45:12,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-02-14 19:45:12,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 231. [2022-02-14 19:45:12,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 181 states have (on average 1.1049723756906078) internal successors, (200), 183 states have internal predecessors, (200), 24 states have call successors, (24), 24 states have call predecessors, (24), 25 states have return successors, (25), 23 states have call predecessors, (25), 22 states have call successors, (25) [2022-02-14 19:45:12,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 249 transitions. [2022-02-14 19:45:12,528 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 249 transitions. Word has length 158 [2022-02-14 19:45:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:12,528 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 249 transitions. [2022-02-14 19:45:12,529 INFO L471 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) [2022-02-14 19:45:12,529 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 249 transitions. [2022-02-14 19:45:12,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-02-14 19:45:12,529 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:12,529 INFO L514 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] [2022-02-14 19:45:12,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-14 19:45:12,530 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:12,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:12,530 INFO L85 PathProgramCache]: Analyzing trace with hash 473656636, now seen corresponding path program 1 times [2022-02-14 19:45:12,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:12,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039454809] [2022-02-14 19:45:12,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:12,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-14 19:45:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:45:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-14 19:45:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:45:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-14 19:45:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-02-14 19:45:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-02-14 19:45:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-02-14 19:45:12,831 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:12,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039454809] [2022-02-14 19:45:12,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039454809] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:12,831 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:12,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-14 19:45:12,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988670295] [2022-02-14 19:45:12,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:12,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-14 19:45:12,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:12,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-14 19:45:12,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-02-14 19:45:12,833 INFO L87 Difference]: Start difference. First operand 231 states and 249 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) [2022-02-14 19:45:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:13,214 INFO L93 Difference]: Finished difference Result 296 states and 320 transitions. [2022-02-14 19:45:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 19:45:13,215 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 [2022-02-14 19:45:13,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:13,215 INFO L225 Difference]: With dead ends: 296 [2022-02-14 19:45:13,215 INFO L226 Difference]: Without dead ends: 210 [2022-02-14 19:45:13,215 INFO L932 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 [2022-02-14 19:45:13,216 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 234 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:13,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 736 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-14 19:45:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-02-14 19:45:13,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-02-14 19:45:13,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 163 states have (on average 1.0920245398773005) internal successors, (178), 164 states have internal predecessors, (178), 23 states have call successors, (23), 23 states have call predecessors, (23), 23 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2022-02-14 19:45:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 224 transitions. [2022-02-14 19:45:13,238 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 224 transitions. Word has length 160 [2022-02-14 19:45:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:13,238 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 224 transitions. [2022-02-14 19:45:13,238 INFO L471 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) [2022-02-14 19:45:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 224 transitions. [2022-02-14 19:45:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-14 19:45:13,239 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:13,239 INFO L514 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] [2022-02-14 19:45:13,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-14 19:45:13,239 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:13,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash -155521920, now seen corresponding path program 1 times [2022-02-14 19:45:13,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:13,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763660145] [2022-02-14 19:45:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:13,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-14 19:45:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:45:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-14 19:45:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:45:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-14 19:45:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-14 19:45:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-14 19:45:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-14 19:45:13,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:13,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763660145] [2022-02-14 19:45:13,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763660145] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:13,509 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:13,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-14 19:45:13,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272208759] [2022-02-14 19:45:13,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:13,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-14 19:45:13,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:13,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-14 19:45:13,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-02-14 19:45:13,510 INFO L87 Difference]: Start difference. First operand 210 states and 224 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) [2022-02-14 19:45:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:14,418 INFO L93 Difference]: Finished difference Result 414 states and 443 transitions. [2022-02-14 19:45:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-14 19:45:14,418 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 [2022-02-14 19:45:14,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:14,419 INFO L225 Difference]: With dead ends: 414 [2022-02-14 19:45:14,419 INFO L226 Difference]: Without dead ends: 213 [2022-02-14 19:45:14,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=387, Invalid=1965, Unknown=0, NotChecked=0, Total=2352 [2022-02-14 19:45:14,421 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 551 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:14,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 592 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-14 19:45:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-02-14 19:45:14,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 210. [2022-02-14 19:45:14,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 163 states have (on average 1.0858895705521472) internal successors, (177), 164 states have internal predecessors, (177), 23 states have call successors, (23), 23 states have call predecessors, (23), 23 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2022-02-14 19:45:14,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 223 transitions. [2022-02-14 19:45:14,449 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 223 transitions. Word has length 161 [2022-02-14 19:45:14,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:14,449 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 223 transitions. [2022-02-14 19:45:14,449 INFO L471 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) [2022-02-14 19:45:14,449 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 223 transitions. [2022-02-14 19:45:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-02-14 19:45:14,450 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 19:45:14,450 INFO L514 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] [2022-02-14 19:45:14,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-14 19:45:14,450 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 19:45:14,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 19:45:14,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1078689346, now seen corresponding path program 1 times [2022-02-14 19:45:14,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 19:45:14,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484731876] [2022-02-14 19:45:14,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 19:45:14,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 19:45:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 19:45:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 19:45:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 19:45:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-14 19:45:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-14 19:45:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-14 19:45:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-14 19:45:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 19:45:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-14 19:45:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-14 19:45:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-14 19:45:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-14 19:45:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-14 19:45:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-14 19:45:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 19:45:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-14 19:45:14,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 19:45:14,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484731876] [2022-02-14 19:45:14,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484731876] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 19:45:14,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 19:45:14,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-14 19:45:14,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182354278] [2022-02-14 19:45:14,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 19:45:14,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-14 19:45:14,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 19:45:14,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-14 19:45:14,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-02-14 19:45:14,830 INFO L87 Difference]: Start difference. First operand 210 states and 223 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) [2022-02-14 19:45:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 19:45:15,710 INFO L93 Difference]: Finished difference Result 213 states and 227 transitions. [2022-02-14 19:45:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-14 19:45:15,711 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 [2022-02-14 19:45:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 19:45:15,711 INFO L225 Difference]: With dead ends: 213 [2022-02-14 19:45:15,711 INFO L226 Difference]: Without dead ends: 0 [2022-02-14 19:45:15,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=1715, Unknown=0, NotChecked=0, Total=1980 [2022-02-14 19:45:15,712 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 443 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-14 19:45:15,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 741 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-14 19:45:15,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-14 19:45:15,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-14 19:45:15,713 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) [2022-02-14 19:45:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-14 19:45:15,713 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2022-02-14 19:45:15,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 19:45:15,713 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-14 19:45:15,713 INFO L471 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) [2022-02-14 19:45:15,713 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-14 19:45:15,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-14 19:45:15,715 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 19:45:15,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-14 19:45:15,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.