/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/kbfiltr.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 02:41:16,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 02:41:16,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 02:41:16,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 02:41:16,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 02:41:16,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 02:41:16,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 02:41:16,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 02:41:16,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 02:41:16,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 02:41:16,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 02:41:16,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 02:41:16,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 02:41:16,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 02:41:16,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 02:41:16,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 02:41:16,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 02:41:16,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 02:41:16,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 02:41:16,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 02:41:16,404 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 02:41:16,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 02:41:16,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 02:41:16,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 02:41:16,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 02:41:16,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 02:41:16,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 02:41:16,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 02:41:16,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 02:41:16,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 02:41:16,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-20 02:41:16,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 02:41:16,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 02:41:16,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 02:41:16,421 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 [2022-03-20 02:41:16,446 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 02:41:16,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 02:41:16,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-20 02:41:16,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-20 02:41:16,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 02:41:16,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 02:41:16,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 02:41:16,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 02:41:16,447 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 02:41:16,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 02:41:16,448 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 02:41:16,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 02:41:16,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 02:41:16,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 02:41:16,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 02:41:16,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 02:41:16,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 02:41:16,449 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 02:41:16,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 02:41:16,449 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 02:41:16,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 02:41:16,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 02:41:16,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 02:41:16,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 02:41:16,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 02:41:16,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 02:41:16,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 02:41:16,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 02:41:16,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 02:41:16,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 02:41:16,450 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-20 02:41:16,450 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-20 02:41:16,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 02:41:16,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 02:41:16,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 02:41:16,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 02:41:16,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 02:41:16,647 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 02:41:16,648 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 02:41:16,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-03-20 02:41:16,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c538e726a/eac2417fce77420f9aaa6dfef3be88ec/FLAGc4850daa5 [2022-03-20 02:41:17,105 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 02:41:17,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-03-20 02:41:17,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c538e726a/eac2417fce77420f9aaa6dfef3be88ec/FLAGc4850daa5 [2022-03-20 02:41:17,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c538e726a/eac2417fce77420f9aaa6dfef3be88ec [2022-03-20 02:41:17,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 02:41:17,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 02:41:17,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 02:41:17,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 02:41:17,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 02:41:17,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 02:41:17" (1/1) ... [2022-03-20 02:41:17,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3bd66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:41:17, skipping insertion in model container [2022-03-20 02:41:17,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 02:41:17" (1/1) ... [2022-03-20 02:41:17,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 02:41:17,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 02:41:17,859 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/kbfiltr.i.cil-2.c[62209,62222] [2022-03-20 02:41:18,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 02:41:18,039 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 02:41:18,082 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/kbfiltr.i.cil-2.c[62209,62222] [2022-03-20 02:41:18,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 02:41:18,187 INFO L208 MainTranslator]: Completed translation [2022-03-20 02:41:18,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:41:18 WrapperNode [2022-03-20 02:41:18,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 02:41:18,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 02:41:18,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 02:41:18,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 02:41:18,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:41:18" (1/1) ... [2022-03-20 02:41:18,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:41:18" (1/1) ... [2022-03-20 02:41:18,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:41:18" (1/1) ... [2022-03-20 02:41:18,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:41:18" (1/1) ... [2022-03-20 02:41:18,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:41:18" (1/1) ... [2022-03-20 02:41:18,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:41:18" (1/1) ... [2022-03-20 02:41:18,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:41:18" (1/1) ... [2022-03-20 02:41:18,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 02:41:18,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 02:41:18,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 02:41:18,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 02:41:18,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:41:18" (1/1) ... [2022-03-20 02:41:18,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 02:41:18,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:41:18,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 02:41:18,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 02:41:18,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 02:41:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 02:41:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-03-20 02:41:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PKEYBOARD_INPUT_DATA~0~X~~POUTPUT_PACKET~0~X~~UCHAR~0~X~~PUCHAR~0~X~~PBOOLEAN~0~X~~PKEYBOARD_SCAN_STATE~0~TO~~BOOLEAN~0 [2022-03-20 02:41:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-03-20 02:41:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 02:41:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 02:41:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-03-20 02:41:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-03-20 02:41:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IoCtl [2022-03-20 02:41:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-20 02:41:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-20 02:41:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-20 02:41:18,393 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_AddDevice [2022-03-20 02:41:18,393 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-03-20 02:41:18,393 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-03-20 02:41:18,393 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-03-20 02:41:18,393 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-03-20 02:41:18,393 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InitializationRoutine [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IsrHook [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_ServiceCallback [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Unload [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-20 02:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-20 02:41:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-20 02:41:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-20 02:41:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-20 02:41:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-20 02:41:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-20 02:41:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-20 02:41:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-20 02:41:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-20 02:41:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-20 02:41:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-20 02:41:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-20 02:41:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-20 02:41:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-20 02:41:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-20 02:41:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-20 02:41:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-20 02:41:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-20 02:41:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-20 02:41:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-20 02:41:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-20 02:41:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-20 02:41:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-20 02:41:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-20 02:41:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-20 02:41:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-20 02:41:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-20 02:41:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-20 02:41:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-20 02:41:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-20 02:41:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-20 02:41:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-20 02:41:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-20 02:41:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-20 02:41:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-20 02:41:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-20 02:41:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-20 02:41:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-20 02:41:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-20 02:41:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-20 02:41:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-20 02:41:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-20 02:41:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-20 02:41:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-20 02:41:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-20 02:41:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-20 02:41:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-20 02:41:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-20 02:41:18,400 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-20 02:41:18,400 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-20 02:41:18,400 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-20 02:41:18,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-20 02:41:18,400 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-20 02:41:18,400 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-20 02:41:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 02:41:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 02:41:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 02:41:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 02:41:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 02:41:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 02:41:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 02:41:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-20 02:41:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 02:41:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-20 02:41:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-20 02:41:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-20 02:41:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-20 02:41:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-20 02:41:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-20 02:41:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-20 02:41:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-20 02:41:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-20 02:41:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-20 02:41:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-20 02:41:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-03-20 02:41:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 02:41:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 02:41:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-03-20 02:41:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-20 02:41:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-20 02:41:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-20 02:41:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-20 02:41:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-20 02:41:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-20 02:41:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-20 02:41:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-20 02:41:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-20 02:41:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-20 02:41:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-20 02:41:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-20 02:41:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-20 02:41:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-20 02:41:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-20 02:41:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-20 02:41:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-20 02:41:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-20 02:41:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-20 02:41:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-20 02:41:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-20 02:41:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-20 02:41:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-20 02:41:18,412 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-20 02:41:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_AddDevice [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IoCtl [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InitializationRoutine [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IsrHook [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_ServiceCallback [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Unload [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-20 02:41:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PKEYBOARD_INPUT_DATA~0~X~~POUTPUT_PACKET~0~X~~UCHAR~0~X~~PUCHAR~0~X~~PBOOLEAN~0~X~~PKEYBOARD_SCAN_STATE~0~TO~~BOOLEAN~0 [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-20 02:41:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-20 02:41:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-20 02:41:18,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-20 02:41:18,783 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 02:41:18,785 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 02:41:18,812 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:18,838 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:18,839 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:18,839 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:18,844 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:18,844 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:18,868 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:18,872 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:18,872 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:18,873 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:18,881 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:18,881 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:18,884 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:18,890 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:18,890 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:19,126 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:19,131 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:19,132 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:19,132 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:19,141 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:19,142 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:19,142 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:19,156 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:19,157 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:19,169 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:19,174 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:19,174 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:19,174 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:19,178 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:19,178 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:19,178 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:19,184 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:19,184 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:19,208 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:19,213 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:19,213 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:19,213 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:19,217 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:19,217 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:19,225 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:19,379 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-20 02:41:19,379 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-20 02:41:19,394 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:19,414 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-20 02:41:19,414 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-20 02:41:19,427 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:19,430 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:19,431 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:19,434 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:20,531 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-20 02:41:20,531 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-20 02:41:20,638 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:20,641 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:20,642 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:20,699 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:20,702 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:20,702 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:20,713 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:20,726 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-20 02:41:20,727 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-20 02:41:20,732 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:20,742 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-20 02:41:20,743 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-20 02:41:20,765 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:20,768 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:20,769 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:20,773 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:20,815 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-20 02:41:20,815 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-20 02:41:20,818 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:41:20,822 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:41:20,822 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:41:20,846 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 02:41:20,861 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 02:41:20,862 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-20 02:41:20,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 02:41:20 BoogieIcfgContainer [2022-03-20 02:41:20,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 02:41:20,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 02:41:20,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 02:41:20,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 02:41:20,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 02:41:17" (1/3) ... [2022-03-20 02:41:20,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775c2d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 02:41:20, skipping insertion in model container [2022-03-20 02:41:20,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:41:18" (2/3) ... [2022-03-20 02:41:20,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775c2d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 02:41:20, skipping insertion in model container [2022-03-20 02:41:20,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 02:41:20" (3/3) ... [2022-03-20 02:41:20,871 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2022-03-20 02:41:20,875 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 02:41:20,875 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 02:41:20,944 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 02:41:20,948 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 [2022-03-20 02:41:20,948 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 02:41:20,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 230 states have (on average 1.5) internal successors, (345), 248 states have internal predecessors, (345), 49 states have call successors, (49), 27 states have call predecessors, (49), 27 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) [2022-03-20 02:41:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-20 02:41:20,990 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:41:20,990 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:41:20,991 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:41:20,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:41:20,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 1 times [2022-03-20 02:41:21,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:41:21,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448878157] [2022-03-20 02:41:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:41:21,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:41:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:21,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:41:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:41:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:21,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:41:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:21,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:41:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:41:21,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:41:21,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448878157] [2022-03-20 02:41:21,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448878157] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:41:21,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:41:21,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 02:41:21,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679053686] [2022-03-20 02:41:21,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:41:21,525 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 02:41:21,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:41:21,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 02:41:21,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 02:41:21,552 INFO L87 Difference]: Start difference. First operand has 308 states, 230 states have (on average 1.5) internal successors, (345), 248 states have internal predecessors, (345), 49 states have call successors, (49), 27 states have call predecessors, (49), 27 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 02:41:23,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:41:24,977 INFO L93 Difference]: Finished difference Result 643 states and 953 transitions. [2022-03-20 02:41:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 02:41:24,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 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 31 [2022-03-20 02:41:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:41:24,987 INFO L225 Difference]: With dead ends: 643 [2022-03-20 02:41:24,987 INFO L226 Difference]: Without dead ends: 343 [2022-03-20 02:41:24,990 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-20 02:41:24,993 INFO L913 BasicCegarLoop]: 332 mSDtfsCounter, 599 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 225 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-20 02:41:24,993 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 460 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 378 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-03-20 02:41:25,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-20 02:41:25,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-03-20 02:41:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 224 states have (on average 1.4464285714285714) internal successors, (324), 240 states have internal predecessors, (324), 49 states have call successors, (49), 27 states have call predecessors, (49), 25 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-20 02:41:25,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 407 transitions. [2022-03-20 02:41:25,043 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 407 transitions. Word has length 31 [2022-03-20 02:41:25,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:41:25,043 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 407 transitions. [2022-03-20 02:41:25,043 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 02:41:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 407 transitions. [2022-03-20 02:41:25,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-20 02:41:25,044 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:41:25,044 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:41:25,044 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 02:41:25,044 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:41:25,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:41:25,045 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 1 times [2022-03-20 02:41:25,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:41:25,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796411573] [2022-03-20 02:41:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:41:25,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:41:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:25,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:41:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:41:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:25,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:41:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:25,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:41:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:41:25,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:41:25,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796411573] [2022-03-20 02:41:25,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796411573] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:41:25,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:41:25,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 02:41:25,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644788142] [2022-03-20 02:41:25,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:41:25,357 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 02:41:25,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:41:25,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 02:41:25,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-20 02:41:25,360 INFO L87 Difference]: Start difference. First operand 299 states and 407 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 02:41:28,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:30,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:32,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:34,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:37,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:41:37,646 INFO L93 Difference]: Finished difference Result 360 states and 492 transitions. [2022-03-20 02:41:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 02:41:37,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 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 31 [2022-03-20 02:41:37,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:41:37,649 INFO L225 Difference]: With dead ends: 360 [2022-03-20 02:41:37,649 INFO L226 Difference]: Without dead ends: 343 [2022-03-20 02:41:37,649 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-20 02:41:37,650 INFO L913 BasicCegarLoop]: 313 mSDtfsCounter, 602 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 224 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:41:37,650 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 682 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1363 Invalid, 4 Unknown, 0 Unchecked, 12.1s Time] [2022-03-20 02:41:37,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-20 02:41:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-03-20 02:41:37,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 224 states have (on average 1.4419642857142858) internal successors, (323), 240 states have internal predecessors, (323), 49 states have call successors, (49), 27 states have call predecessors, (49), 25 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-20 02:41:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 406 transitions. [2022-03-20 02:41:37,686 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 406 transitions. Word has length 31 [2022-03-20 02:41:37,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:41:37,686 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 406 transitions. [2022-03-20 02:41:37,686 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 02:41:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 406 transitions. [2022-03-20 02:41:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-20 02:41:37,691 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:41:37,691 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:41:37,691 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 02:41:37,692 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:41:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:41:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 1 times [2022-03-20 02:41:37,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:41:37,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991185846] [2022-03-20 02:41:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:41:37,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:41:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:37,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:41:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:37,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:41:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:41:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:41:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:37,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:41:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:37,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:41:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:38,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:41:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:41:38,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:41:38,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991185846] [2022-03-20 02:41:38,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991185846] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:41:38,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:41:38,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 02:41:38,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918430614] [2022-03-20 02:41:38,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:41:38,071 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 02:41:38,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:41:38,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 02:41:38,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-20 02:41:38,072 INFO L87 Difference]: Start difference. First operand 299 states and 406 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, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 02:41:39,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:42,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:44,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:46,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:48,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:41:53,398 INFO L93 Difference]: Finished difference Result 599 states and 829 transitions. [2022-03-20 02:41:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 02:41:53,399 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, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2022-03-20 02:41:53,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:41:53,401 INFO L225 Difference]: With dead ends: 599 [2022-03-20 02:41:53,402 INFO L226 Difference]: Without dead ends: 348 [2022-03-20 02:41:53,402 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-03-20 02:41:53,403 INFO L913 BasicCegarLoop]: 312 mSDtfsCounter, 743 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 326 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-03-20 02:41:53,403 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 734 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1539 Invalid, 4 Unknown, 0 Unchecked, 15.0s Time] [2022-03-20 02:41:53,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-03-20 02:41:53,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 303. [2022-03-20 02:41:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 227 states have (on average 1.4361233480176212) internal successors, (326), 243 states have internal predecessors, (326), 49 states have call successors, (49), 27 states have call predecessors, (49), 26 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2022-03-20 02:41:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 410 transitions. [2022-03-20 02:41:53,422 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 410 transitions. Word has length 53 [2022-03-20 02:41:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:41:53,422 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 410 transitions. [2022-03-20 02:41:53,422 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 02:41:53,422 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 410 transitions. [2022-03-20 02:41:53,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-20 02:41:53,423 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:41:53,423 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:41:53,423 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 02:41:53,424 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:41:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:41:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 1 times [2022-03-20 02:41:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:41:53,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109518126] [2022-03-20 02:41:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:41:53,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:41:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:53,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:41:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:53,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:41:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:53,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:41:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:53,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:41:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:41:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:41:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:53,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:41:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:41:53,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:41:53,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109518126] [2022-03-20 02:41:53,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109518126] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:41:53,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:41:53,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 02:41:53,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545159058] [2022-03-20 02:41:53,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:41:53,748 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 02:41:53,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:41:53,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 02:41:53,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 02:41:53,750 INFO L87 Difference]: Start difference. First operand 303 states and 410 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 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) [2022-03-20 02:41:55,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:57,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:41:57,567 INFO L93 Difference]: Finished difference Result 492 states and 667 transitions. [2022-03-20 02:41:57,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 02:41:57,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 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 53 [2022-03-20 02:41:57,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:41:57,570 INFO L225 Difference]: With dead ends: 492 [2022-03-20 02:41:57,570 INFO L226 Difference]: Without dead ends: 431 [2022-03-20 02:41:57,584 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-20 02:41:57,585 INFO L913 BasicCegarLoop]: 365 mSDtfsCounter, 1002 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 364 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-20 02:41:57,585 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1007 Valid, 577 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 857 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-20 02:41:57,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-03-20 02:41:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 374. [2022-03-20 02:41:57,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 288 states have (on average 1.3715277777777777) internal successors, (395), 292 states have internal predecessors, (395), 48 states have call successors, (48), 33 states have call predecessors, (48), 37 states have return successors, (55), 51 states have call predecessors, (55), 39 states have call successors, (55) [2022-03-20 02:41:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 498 transitions. [2022-03-20 02:41:57,608 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 498 transitions. Word has length 53 [2022-03-20 02:41:57,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:41:57,608 INFO L478 AbstractCegarLoop]: Abstraction has 374 states and 498 transitions. [2022-03-20 02:41:57,608 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 3 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) [2022-03-20 02:41:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 498 transitions. [2022-03-20 02:41:57,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 02:41:57,610 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:41:57,610 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:41:57,610 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 02:41:57,610 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:41:57,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:41:57,610 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 1 times [2022-03-20 02:41:57,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:41:57,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841315539] [2022-03-20 02:41:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:41:57,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:41:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:57,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:41:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:57,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:41:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:57,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:41:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:57,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:41:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:57,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:41:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:57,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:41:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:41:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:57,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 02:41:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:41:57,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:41:57,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841315539] [2022-03-20 02:41:57,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841315539] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:41:57,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:41:57,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 02:41:57,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865639502] [2022-03-20 02:41:57,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:41:57,889 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 02:41:57,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:41:57,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 02:41:57,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 02:41:57,890 INFO L87 Difference]: Start difference. First operand 374 states and 498 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 02:42:00,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:01,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:02,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:42:02,982 INFO L93 Difference]: Finished difference Result 569 states and 751 transitions. [2022-03-20 02:42:02,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 02:42:02,982 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), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 60 [2022-03-20 02:42:02,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:42:02,984 INFO L225 Difference]: With dead ends: 569 [2022-03-20 02:42:02,985 INFO L226 Difference]: Without dead ends: 450 [2022-03-20 02:42:02,985 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-03-20 02:42:02,986 INFO L913 BasicCegarLoop]: 318 mSDtfsCounter, 857 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 276 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-20 02:42:02,986 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 552 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 780 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-03-20 02:42:02,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-20 02:42:03,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 410. [2022-03-20 02:42:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 325 states have (on average 1.3723076923076922) internal successors, (446), 327 states have internal predecessors, (446), 44 states have call successors, (44), 33 states have call predecessors, (44), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-03-20 02:42:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 545 transitions. [2022-03-20 02:42:03,011 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 545 transitions. Word has length 60 [2022-03-20 02:42:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:42:03,011 INFO L478 AbstractCegarLoop]: Abstraction has 410 states and 545 transitions. [2022-03-20 02:42:03,011 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 02:42:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 545 transitions. [2022-03-20 02:42:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 02:42:03,012 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:42:03,012 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:42:03,013 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 02:42:03,013 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:42:03,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:42:03,013 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 1 times [2022-03-20 02:42:03,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:42:03,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517274850] [2022-03-20 02:42:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:42:03,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:42:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:42:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:03,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:42:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:42:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:03,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:03,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:42:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:03,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:42:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:03,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 02:42:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:42:03,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:42:03,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517274850] [2022-03-20 02:42:03,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517274850] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:42:03,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:42:03,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 02:42:03,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449768118] [2022-03-20 02:42:03,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:42:03,356 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 02:42:03,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:42:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 02:42:03,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 02:42:03,357 INFO L87 Difference]: Start difference. First operand 410 states and 545 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 02:42:05,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:08,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:42:08,935 INFO L93 Difference]: Finished difference Result 450 states and 594 transitions. [2022-03-20 02:42:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 02:42:08,935 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2022-03-20 02:42:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:42:08,937 INFO L225 Difference]: With dead ends: 450 [2022-03-20 02:42:08,937 INFO L226 Difference]: Without dead ends: 442 [2022-03-20 02:42:08,938 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-03-20 02:42:08,938 INFO L913 BasicCegarLoop]: 333 mSDtfsCounter, 1946 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 649 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-20 02:42:08,938 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1955 Valid, 559 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [649 Valid, 787 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-03-20 02:42:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-03-20 02:42:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 415. [2022-03-20 02:42:08,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 330 states have (on average 1.3696969696969696) internal successors, (452), 332 states have internal predecessors, (452), 44 states have call successors, (44), 33 states have call predecessors, (44), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-03-20 02:42:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 551 transitions. [2022-03-20 02:42:08,969 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 551 transitions. Word has length 60 [2022-03-20 02:42:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:42:08,970 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 551 transitions. [2022-03-20 02:42:08,970 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 02:42:08,970 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 551 transitions. [2022-03-20 02:42:08,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 02:42:08,971 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:42:08,971 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:42:08,971 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 02:42:08,971 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:42:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:42:08,971 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 1 times [2022-03-20 02:42:08,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:42:08,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299913273] [2022-03-20 02:42:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:42:08,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:42:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:09,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:42:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:09,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:42:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:42:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:09,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:09,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:42:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:09,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:09,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:42:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:42:09,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:42:09,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299913273] [2022-03-20 02:42:09,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299913273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:42:09,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:42:09,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 02:42:09,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893759338] [2022-03-20 02:42:09,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:42:09,201 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 02:42:09,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:42:09,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 02:42:09,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 02:42:09,202 INFO L87 Difference]: Start difference. First operand 415 states and 551 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 02:42:11,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:13,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:42:13,778 INFO L93 Difference]: Finished difference Result 433 states and 574 transitions. [2022-03-20 02:42:13,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 02:42:13,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-03-20 02:42:13,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:42:13,780 INFO L225 Difference]: With dead ends: 433 [2022-03-20 02:42:13,780 INFO L226 Difference]: Without dead ends: 429 [2022-03-20 02:42:13,781 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-03-20 02:42:13,781 INFO L913 BasicCegarLoop]: 297 mSDtfsCounter, 723 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 257 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-20 02:42:13,781 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 506 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 792 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-03-20 02:42:13,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-03-20 02:42:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 414. [2022-03-20 02:42:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 330 states have (on average 1.3636363636363635) internal successors, (450), 331 states have internal predecessors, (450), 43 states have call successors, (43), 33 states have call predecessors, (43), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-03-20 02:42:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 548 transitions. [2022-03-20 02:42:13,807 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 548 transitions. Word has length 62 [2022-03-20 02:42:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:42:13,807 INFO L478 AbstractCegarLoop]: Abstraction has 414 states and 548 transitions. [2022-03-20 02:42:13,807 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-20 02:42:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 548 transitions. [2022-03-20 02:42:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 02:42:13,808 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:42:13,808 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:42:13,808 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 02:42:13,808 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:42:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:42:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 1 times [2022-03-20 02:42:13,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:42:13,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197892699] [2022-03-20 02:42:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:42:13,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:42:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:13,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:42:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:42:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:13,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:42:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:14,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:14,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:42:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:14,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:14,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:42:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:14,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 02:42:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:42:14,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:42:14,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197892699] [2022-03-20 02:42:14,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197892699] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:42:14,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:42:14,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 02:42:14,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698215136] [2022-03-20 02:42:14,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:42:14,126 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 02:42:14,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:42:14,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 02:42:14,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 02:42:14,127 INFO L87 Difference]: Start difference. First operand 414 states and 548 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 02:42:16,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:18,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:42:18,601 INFO L93 Difference]: Finished difference Result 448 states and 589 transitions. [2022-03-20 02:42:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 02:42:18,601 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2022-03-20 02:42:18,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:42:18,603 INFO L225 Difference]: With dead ends: 448 [2022-03-20 02:42:18,603 INFO L226 Difference]: Without dead ends: 440 [2022-03-20 02:42:18,603 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-03-20 02:42:18,604 INFO L913 BasicCegarLoop]: 333 mSDtfsCounter, 974 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 316 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-20 02:42:18,604 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 607 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 1089 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-03-20 02:42:18,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-03-20 02:42:18,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 415. [2022-03-20 02:42:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 331 states have (on average 1.3625377643504533) internal successors, (451), 332 states have internal predecessors, (451), 43 states have call successors, (43), 33 states have call predecessors, (43), 40 states have return successors, (55), 50 states have call predecessors, (55), 37 states have call successors, (55) [2022-03-20 02:42:18,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 549 transitions. [2022-03-20 02:42:18,630 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 549 transitions. Word has length 61 [2022-03-20 02:42:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:42:18,630 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 549 transitions. [2022-03-20 02:42:18,630 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 02:42:18,630 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 549 transitions. [2022-03-20 02:42:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 02:42:18,631 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:42:18,631 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:42:18,631 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 02:42:18,631 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:42:18,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:42:18,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 1 times [2022-03-20 02:42:18,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:42:18,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38117622] [2022-03-20 02:42:18,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:42:18,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:42:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:18,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:42:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:18,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:42:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:42:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:42:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:18,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:18,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:42:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 02:42:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:42:18,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:42:18,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38117622] [2022-03-20 02:42:18,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38117622] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:42:18,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:42:18,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 02:42:18,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525193457] [2022-03-20 02:42:18,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:42:18,885 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 02:42:18,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:42:18,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 02:42:18,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-20 02:42:18,886 INFO L87 Difference]: Start difference. First operand 415 states and 549 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 02:42:21,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:22,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:42:22,965 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2022-03-20 02:42:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 02:42:22,965 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2022-03-20 02:42:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:42:22,976 INFO L225 Difference]: With dead ends: 442 [2022-03-20 02:42:22,976 INFO L226 Difference]: Without dead ends: 389 [2022-03-20 02:42:22,976 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-03-20 02:42:22,977 INFO L913 BasicCegarLoop]: 334 mSDtfsCounter, 1512 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 512 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-20 02:42:22,977 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 572 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 881 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-03-20 02:42:22,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-20 02:42:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-03-20 02:42:23,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 296 states have (on average 1.3817567567567568) internal successors, (409), 302 states have internal predecessors, (409), 42 states have call successors, (42), 32 states have call predecessors, (42), 32 states have return successors, (42), 37 states have call predecessors, (42), 36 states have call successors, (42) [2022-03-20 02:42:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 493 transitions. [2022-03-20 02:42:23,026 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 493 transitions. Word has length 62 [2022-03-20 02:42:23,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:42:23,027 INFO L478 AbstractCegarLoop]: Abstraction has 371 states and 493 transitions. [2022-03-20 02:42:23,027 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 02:42:23,027 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 493 transitions. [2022-03-20 02:42:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-20 02:42:23,028 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:42:23,028 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:42:23,028 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 02:42:23,028 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:42:23,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:42:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 1 times [2022-03-20 02:42:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:42:23,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935987060] [2022-03-20 02:42:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:42:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:42:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:23,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:42:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:23,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:42:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:23,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:42:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:23,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:42:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:23,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:23,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:42:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:23,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 02:42:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 02:42:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:42:23,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:42:23,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935987060] [2022-03-20 02:42:23,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935987060] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:42:23,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:42:23,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 02:42:23,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778541010] [2022-03-20 02:42:23,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:42:23,424 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 02:42:23,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:42:23,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 02:42:23,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-20 02:42:23,425 INFO L87 Difference]: Start difference. First operand 371 states and 493 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 02:42:25,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:29,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:42:29,016 INFO L93 Difference]: Finished difference Result 417 states and 550 transitions. [2022-03-20 02:42:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 02:42:29,016 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), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2022-03-20 02:42:29,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:42:29,018 INFO L225 Difference]: With dead ends: 417 [2022-03-20 02:42:29,018 INFO L226 Difference]: Without dead ends: 409 [2022-03-20 02:42:29,018 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-03-20 02:42:29,019 INFO L913 BasicCegarLoop]: 278 mSDtfsCounter, 1450 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 465 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:42:29,019 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1462 Valid, 572 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1173 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-03-20 02:42:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-20 02:42:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2022-03-20 02:42:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 309 states have (on average 1.3754045307443366) internal successors, (425), 314 states have internal predecessors, (425), 42 states have call successors, (42), 32 states have call predecessors, (42), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-03-20 02:42:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 511 transitions. [2022-03-20 02:42:29,046 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 511 transitions. Word has length 72 [2022-03-20 02:42:29,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:42:29,046 INFO L478 AbstractCegarLoop]: Abstraction has 386 states and 511 transitions. [2022-03-20 02:42:29,046 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 02:42:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 511 transitions. [2022-03-20 02:42:29,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 02:42:29,047 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:42:29,047 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:42:29,047 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 02:42:29,048 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:42:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:42:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 1 times [2022-03-20 02:42:29,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:42:29,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335975490] [2022-03-20 02:42:29,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:42:29,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:42:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:29,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:42:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:29,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:42:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:29,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:42:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:29,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:29,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:42:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:29,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:29,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:42:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 02:42:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:29,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 02:42:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:42:29,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:42:29,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335975490] [2022-03-20 02:42:29,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335975490] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:42:29,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:42:29,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 02:42:29,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151801062] [2022-03-20 02:42:29,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:42:29,422 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 02:42:29,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:42:29,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 02:42:29,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-20 02:42:29,423 INFO L87 Difference]: Start difference. First operand 386 states and 511 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 02:42:30,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:32,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:34,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:36,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:38,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:40,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:42:45,890 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2022-03-20 02:42:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 02:42:45,890 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2022-03-20 02:42:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:42:45,892 INFO L225 Difference]: With dead ends: 417 [2022-03-20 02:42:45,892 INFO L226 Difference]: Without dead ends: 409 [2022-03-20 02:42:45,892 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-03-20 02:42:45,893 INFO L913 BasicCegarLoop]: 280 mSDtfsCounter, 1129 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 364 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-03-20 02:42:45,893 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1141 Valid, 654 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1597 Invalid, 5 Unknown, 0 Unchecked, 15.9s Time] [2022-03-20 02:42:45,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-20 02:42:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 387. [2022-03-20 02:42:45,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 310 states have (on average 1.3741935483870968) internal successors, (426), 315 states have internal predecessors, (426), 42 states have call successors, (42), 32 states have call predecessors, (42), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-03-20 02:42:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 512 transitions. [2022-03-20 02:42:45,921 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 512 transitions. Word has length 73 [2022-03-20 02:42:45,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:42:45,921 INFO L478 AbstractCegarLoop]: Abstraction has 387 states and 512 transitions. [2022-03-20 02:42:45,921 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 02:42:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 512 transitions. [2022-03-20 02:42:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-20 02:42:45,922 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:42:45,922 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:42:45,922 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 02:42:45,922 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:42:45,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:42:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 1 times [2022-03-20 02:42:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:42:45,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295537720] [2022-03-20 02:42:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:42:45,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:42:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:42:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:46,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:42:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:46,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:42:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:46,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:46,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:42:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:46,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:42:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:46,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 02:42:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:46,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 02:42:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:42:46,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:42:46,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295537720] [2022-03-20 02:42:46,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295537720] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:42:46,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:42:46,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 02:42:46,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814526888] [2022-03-20 02:42:46,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:42:46,184 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 02:42:46,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:42:46,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 02:42:46,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-20 02:42:46,184 INFO L87 Difference]: Start difference. First operand 387 states and 512 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-20 02:42:48,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:42:50,453 INFO L93 Difference]: Finished difference Result 419 states and 554 transitions. [2022-03-20 02:42:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 02:42:50,453 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 74 [2022-03-20 02:42:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:42:50,466 INFO L225 Difference]: With dead ends: 419 [2022-03-20 02:42:50,466 INFO L226 Difference]: Without dead ends: 396 [2022-03-20 02:42:50,467 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-03-20 02:42:50,467 INFO L913 BasicCegarLoop]: 274 mSDtfsCounter, 744 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 240 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-03-20 02:42:50,467 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 434 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 768 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-03-20 02:42:50,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-03-20 02:42:50,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 381. [2022-03-20 02:42:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 305 states have (on average 1.3639344262295081) internal successors, (416), 309 states have internal predecessors, (416), 41 states have call successors, (41), 32 states have call predecessors, (41), 34 states have return successors, (44), 39 states have call predecessors, (44), 36 states have call successors, (44) [2022-03-20 02:42:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 501 transitions. [2022-03-20 02:42:50,498 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 501 transitions. Word has length 74 [2022-03-20 02:42:50,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:42:50,500 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 501 transitions. [2022-03-20 02:42:50,500 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (11), 9 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-20 02:42:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 501 transitions. [2022-03-20 02:42:50,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-20 02:42:50,501 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:42:50,502 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:42:50,502 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-20 02:42:50,502 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:42:50,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:42:50,502 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 1 times [2022-03-20 02:42:50,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:42:50,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015600557] [2022-03-20 02:42:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:42:50,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:42:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:42:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:42:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:42:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:42:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:50,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:42:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 02:42:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 02:42:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:42:50,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:42:50,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015600557] [2022-03-20 02:42:50,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015600557] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:42:50,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:42:50,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 02:42:50,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076484794] [2022-03-20 02:42:50,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:42:50,771 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 02:42:50,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:42:50,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 02:42:50,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-20 02:42:50,772 INFO L87 Difference]: Start difference. First operand 381 states and 501 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 02:42:52,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:42:54,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:42:54,990 INFO L93 Difference]: Finished difference Result 437 states and 561 transitions. [2022-03-20 02:42:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 02:42:54,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2022-03-20 02:42:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:42:54,992 INFO L225 Difference]: With dead ends: 437 [2022-03-20 02:42:54,992 INFO L226 Difference]: Without dead ends: 374 [2022-03-20 02:42:54,992 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-03-20 02:42:54,993 INFO L913 BasicCegarLoop]: 313 mSDtfsCounter, 977 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 315 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-20 02:42:54,993 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 566 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 841 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-03-20 02:42:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-03-20 02:42:55,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2022-03-20 02:42:55,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 274 states have (on average 1.3503649635036497) internal successors, (370), 278 states have internal predecessors, (370), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2022-03-20 02:42:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 447 transitions. [2022-03-20 02:42:55,018 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 447 transitions. Word has length 77 [2022-03-20 02:42:55,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:42:55,018 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 447 transitions. [2022-03-20 02:42:55,019 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 02:42:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 447 transitions. [2022-03-20 02:42:55,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-20 02:42:55,020 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:42:55,020 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:42:55,020 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-20 02:42:55,020 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:42:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:42:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 1 times [2022-03-20 02:42:55,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:42:55,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768316856] [2022-03-20 02:42:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:42:55,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:42:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:55,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:42:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:55,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:42:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:55,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:42:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:55,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:55,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:42:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:55,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:42:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:55,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:42:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:55,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 02:42:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:55,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 02:42:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:42:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:42:55,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:42:55,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768316856] [2022-03-20 02:42:55,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768316856] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:42:55,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:42:55,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 02:42:55,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084937059] [2022-03-20 02:42:55,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:42:55,330 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 02:42:55,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:42:55,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 02:42:55,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-20 02:42:55,330 INFO L87 Difference]: Start difference. First operand 345 states and 447 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 02:42:57,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:43:02,395 INFO L93 Difference]: Finished difference Result 417 states and 534 transitions. [2022-03-20 02:43:02,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 02:43:02,396 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-03-20 02:43:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:43:02,397 INFO L225 Difference]: With dead ends: 417 [2022-03-20 02:43:02,397 INFO L226 Difference]: Without dead ends: 359 [2022-03-20 02:43:02,398 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-03-20 02:43:02,398 INFO L913 BasicCegarLoop]: 281 mSDtfsCounter, 514 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 192 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-03-20 02:43:02,399 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 810 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1884 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-03-20 02:43:02,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-03-20 02:43:02,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2022-03-20 02:43:02,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 273 states have (on average 1.336996336996337) internal successors, (365), 277 states have internal predecessors, (365), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2022-03-20 02:43:02,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 442 transitions. [2022-03-20 02:43:02,449 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 442 transitions. Word has length 75 [2022-03-20 02:43:02,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:43:02,450 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 442 transitions. [2022-03-20 02:43:02,450 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 02:43:02,450 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 442 transitions. [2022-03-20 02:43:02,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-20 02:43:02,451 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:43:02,451 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:43:02,452 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-20 02:43:02,452 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:43:02,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:43:02,452 INFO L85 PathProgramCache]: Analyzing trace with hash 476602328, now seen corresponding path program 1 times [2022-03-20 02:43:02,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:43:02,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934668997] [2022-03-20 02:43:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:43:02,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:43:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:02,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:43:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:43:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:02,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:43:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:02,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:43:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:02,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:43:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:02,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:43:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:02,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:43:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:02,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 02:43:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 02:43:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:43:02,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:43:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934668997] [2022-03-20 02:43:02,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934668997] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:43:02,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:43:02,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 02:43:02,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633805180] [2022-03-20 02:43:02,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:43:02,779 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 02:43:02,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:43:02,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 02:43:02,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-20 02:43:02,780 INFO L87 Difference]: Start difference. First operand 344 states and 442 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-20 02:43:04,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:07,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:09,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:43:09,988 INFO L93 Difference]: Finished difference Result 422 states and 536 transitions. [2022-03-20 02:43:09,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-20 02:43:09,988 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), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 76 [2022-03-20 02:43:09,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:43:09,992 INFO L225 Difference]: With dead ends: 422 [2022-03-20 02:43:09,992 INFO L226 Difference]: Without dead ends: 379 [2022-03-20 02:43:09,993 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2022-03-20 02:43:09,994 INFO L913 BasicCegarLoop]: 302 mSDtfsCounter, 1038 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 378 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-03-20 02:43:09,995 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 720 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 1558 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-03-20 02:43:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-20 02:43:10,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 344. [2022-03-20 02:43:10,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 273 states have (on average 1.3296703296703296) internal successors, (363), 277 states have internal predecessors, (363), 38 states have call successors, (38), 30 states have call predecessors, (38), 32 states have return successors, (38), 36 states have call predecessors, (38), 33 states have call successors, (38) [2022-03-20 02:43:10,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 439 transitions. [2022-03-20 02:43:10,020 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 439 transitions. Word has length 76 [2022-03-20 02:43:10,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:43:10,020 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 439 transitions. [2022-03-20 02:43:10,020 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-20 02:43:10,020 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 439 transitions. [2022-03-20 02:43:10,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-20 02:43:10,021 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:43:10,021 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:43:10,021 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-20 02:43:10,021 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:43:10,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:43:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1346047832, now seen corresponding path program 1 times [2022-03-20 02:43:10,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:43:10,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111435302] [2022-03-20 02:43:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:43:10,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:43:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:10,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:43:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:10,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:43:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:10,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:43:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:10,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:43:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:43:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:43:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:10,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:43:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 02:43:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:10,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:43:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:43:10,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:43:10,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111435302] [2022-03-20 02:43:10,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111435302] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:43:10,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:43:10,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 02:43:10,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493880537] [2022-03-20 02:43:10,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:43:10,275 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 02:43:10,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:43:10,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 02:43:10,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-20 02:43:10,275 INFO L87 Difference]: Start difference. First operand 344 states and 439 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 02:43:12,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:14,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:16,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:18,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:22,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:43:22,299 INFO L93 Difference]: Finished difference Result 378 states and 480 transitions. [2022-03-20 02:43:22,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 02:43:22,299 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2022-03-20 02:43:22,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:43:22,301 INFO L225 Difference]: With dead ends: 378 [2022-03-20 02:43:22,301 INFO L226 Difference]: Without dead ends: 355 [2022-03-20 02:43:22,301 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-03-20 02:43:22,301 INFO L913 BasicCegarLoop]: 274 mSDtfsCounter, 824 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 280 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-03-20 02:43:22,302 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 523 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 817 Invalid, 3 Unknown, 0 Unchecked, 11.8s Time] [2022-03-20 02:43:22,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-03-20 02:43:22,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 335. [2022-03-20 02:43:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 267 states have (on average 1.3333333333333333) internal successors, (356), 271 states have internal predecessors, (356), 37 states have call successors, (37), 29 states have call predecessors, (37), 30 states have return successors, (36), 34 states have call predecessors, (36), 32 states have call successors, (36) [2022-03-20 02:43:22,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 429 transitions. [2022-03-20 02:43:22,326 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 429 transitions. Word has length 76 [2022-03-20 02:43:22,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:43:22,327 INFO L478 AbstractCegarLoop]: Abstraction has 335 states and 429 transitions. [2022-03-20 02:43:22,327 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 02:43:22,327 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 429 transitions. [2022-03-20 02:43:22,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-20 02:43:22,328 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:43:22,328 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:43:22,328 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-20 02:43:22,328 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:43:22,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:43:22,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2131421, now seen corresponding path program 1 times [2022-03-20 02:43:22,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:43:22,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974082769] [2022-03-20 02:43:22,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:43:22,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:43:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:43:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:22,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:43:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:22,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:43:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:22,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:43:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:22,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:43:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:22,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:43:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:22,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:43:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:22,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 02:43:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:22,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 02:43:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:43:22,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:43:22,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974082769] [2022-03-20 02:43:22,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974082769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:43:22,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:43:22,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 02:43:22,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10931814] [2022-03-20 02:43:22,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:43:22,665 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 02:43:22,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:43:22,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 02:43:22,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-03-20 02:43:22,666 INFO L87 Difference]: Start difference. First operand 335 states and 429 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-20 02:43:23,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:25,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:27,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:29,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:31,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:33,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:35,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:36,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:38,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:41,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:43:43,621 INFO L93 Difference]: Finished difference Result 398 states and 505 transitions. [2022-03-20 02:43:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 02:43:43,621 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 78 [2022-03-20 02:43:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:43:43,623 INFO L225 Difference]: With dead ends: 398 [2022-03-20 02:43:43,623 INFO L226 Difference]: Without dead ends: 354 [2022-03-20 02:43:43,623 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-03-20 02:43:43,624 INFO L913 BasicCegarLoop]: 271 mSDtfsCounter, 653 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 231 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-03-20 02:43:43,624 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 923 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 2382 Invalid, 6 Unknown, 0 Unchecked, 20.7s Time] [2022-03-20 02:43:43,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-20 02:43:43,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 334. [2022-03-20 02:43:43,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 266 states have (on average 1.330827067669173) internal successors, (354), 270 states have internal predecessors, (354), 37 states have call successors, (37), 29 states have call predecessors, (37), 30 states have return successors, (36), 34 states have call predecessors, (36), 32 states have call successors, (36) [2022-03-20 02:43:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 427 transitions. [2022-03-20 02:43:43,648 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 427 transitions. Word has length 78 [2022-03-20 02:43:43,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:43:43,648 INFO L478 AbstractCegarLoop]: Abstraction has 334 states and 427 transitions. [2022-03-20 02:43:43,648 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-20 02:43:43,648 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 427 transitions. [2022-03-20 02:43:43,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-20 02:43:43,649 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:43:43,649 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:43:43,649 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-20 02:43:43,649 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:43:43,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:43:43,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1889602735, now seen corresponding path program 1 times [2022-03-20 02:43:43,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:43:43,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217355656] [2022-03-20 02:43:43,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:43:43,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:43:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:43:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:43:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:43:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:43,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:43:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:43,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:43:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:43:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:43,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:43:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:43,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-20 02:43:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:43,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:43:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:43:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:43:44,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:43:44,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217355656] [2022-03-20 02:43:44,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217355656] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:43:44,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:43:44,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 02:43:44,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306088628] [2022-03-20 02:43:44,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:43:44,028 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 02:43:44,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:43:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 02:43:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-20 02:43:44,028 INFO L87 Difference]: Start difference. First operand 334 states and 427 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-20 02:43:45,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:47,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:49,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:51,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:53,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:55,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:57,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:43:59,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:01,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:03,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:06,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:10,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:44:10,566 INFO L93 Difference]: Finished difference Result 475 states and 607 transitions. [2022-03-20 02:44:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 02:44:10,566 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2022-03-20 02:44:10,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:44:10,568 INFO L225 Difference]: With dead ends: 475 [2022-03-20 02:44:10,568 INFO L226 Difference]: Without dead ends: 367 [2022-03-20 02:44:10,568 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-03-20 02:44:10,569 INFO L913 BasicCegarLoop]: 265 mSDtfsCounter, 784 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 287 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2022-03-20 02:44:10,569 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 980 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 2549 Invalid, 9 Unknown, 0 Unchecked, 26.2s Time] [2022-03-20 02:44:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-03-20 02:44:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 338. [2022-03-20 02:44:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 270 states have (on average 1.3296296296296297) internal successors, (359), 275 states have internal predecessors, (359), 36 states have call successors, (36), 29 states have call predecessors, (36), 31 states have return successors, (37), 33 states have call predecessors, (37), 31 states have call successors, (37) [2022-03-20 02:44:10,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 432 transitions. [2022-03-20 02:44:10,599 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 432 transitions. Word has length 79 [2022-03-20 02:44:10,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:44:10,599 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 432 transitions. [2022-03-20 02:44:10,599 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-20 02:44:10,599 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 432 transitions. [2022-03-20 02:44:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-20 02:44:10,600 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:44:10,600 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:44:10,600 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-20 02:44:10,600 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:44:10,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:44:10,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2045108737, now seen corresponding path program 1 times [2022-03-20 02:44:10,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:44:10,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652787285] [2022-03-20 02:44:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:44:10,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:44:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:10,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:44:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:10,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:44:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:10,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:44:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:10,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:44:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:10,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:44:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:44:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:44:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:10,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 02:44:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:10,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 02:44:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:44:10,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:44:10,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652787285] [2022-03-20 02:44:10,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652787285] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:44:10,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:44:10,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 02:44:10,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513622135] [2022-03-20 02:44:10,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:44:10,910 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 02:44:10,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:44:10,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 02:44:10,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-20 02:44:10,911 INFO L87 Difference]: Start difference. First operand 338 states and 432 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (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) [2022-03-20 02:44:13,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:15,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:16,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:18,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:19,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:44:19,463 INFO L93 Difference]: Finished difference Result 429 states and 546 transitions. [2022-03-20 02:44:19,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-20 02:44:19,464 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (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 79 [2022-03-20 02:44:19,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:44:19,465 INFO L225 Difference]: With dead ends: 429 [2022-03-20 02:44:19,465 INFO L226 Difference]: Without dead ends: 376 [2022-03-20 02:44:19,465 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2022-03-20 02:44:19,466 INFO L913 BasicCegarLoop]: 277 mSDtfsCounter, 827 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 268 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-03-20 02:44:19,466 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 549 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1257 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-03-20 02:44:19,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-03-20 02:44:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 329. [2022-03-20 02:44:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 262 states have (on average 1.3244274809160306) internal successors, (347), 266 states have internal predecessors, (347), 36 states have call successors, (36), 29 states have call predecessors, (36), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-03-20 02:44:19,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 418 transitions. [2022-03-20 02:44:19,494 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 418 transitions. Word has length 79 [2022-03-20 02:44:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:44:19,494 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 418 transitions. [2022-03-20 02:44:19,494 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (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) [2022-03-20 02:44:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 418 transitions. [2022-03-20 02:44:19,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-20 02:44:19,495 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:44:19,495 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:44:19,495 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-20 02:44:19,495 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:44:19,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:44:19,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1773831806, now seen corresponding path program 1 times [2022-03-20 02:44:19,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:44:19,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787349331] [2022-03-20 02:44:19,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:44:19,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:44:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:44:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:19,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:44:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:19,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:44:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:19,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:44:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:44:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:44:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:19,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:44:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:19,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 02:44:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:19,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 02:44:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:19,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:44:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:19,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 02:44:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:44:19,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:44:19,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787349331] [2022-03-20 02:44:19,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787349331] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:44:19,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:44:19,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 02:44:19,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786043595] [2022-03-20 02:44:19,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:44:19,758 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 02:44:19,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:44:19,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 02:44:19,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-20 02:44:19,759 INFO L87 Difference]: Start difference. First operand 329 states and 418 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-20 02:44:21,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:24,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:44:25,432 INFO L93 Difference]: Finished difference Result 416 states and 527 transitions. [2022-03-20 02:44:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 02:44:25,433 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 84 [2022-03-20 02:44:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:44:25,434 INFO L225 Difference]: With dead ends: 416 [2022-03-20 02:44:25,434 INFO L226 Difference]: Without dead ends: 357 [2022-03-20 02:44:25,434 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-03-20 02:44:25,435 INFO L913 BasicCegarLoop]: 263 mSDtfsCounter, 839 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 302 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-03-20 02:44:25,435 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 491 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 735 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2022-03-20 02:44:25,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-03-20 02:44:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 327. [2022-03-20 02:44:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 261 states have (on average 1.314176245210728) internal successors, (343), 264 states have internal predecessors, (343), 35 states have call successors, (35), 29 states have call predecessors, (35), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-03-20 02:44:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 413 transitions. [2022-03-20 02:44:25,471 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 413 transitions. Word has length 84 [2022-03-20 02:44:25,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:44:25,471 INFO L478 AbstractCegarLoop]: Abstraction has 327 states and 413 transitions. [2022-03-20 02:44:25,471 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-20 02:44:25,471 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 413 transitions. [2022-03-20 02:44:25,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-20 02:44:25,472 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:44:25,472 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:44:25,472 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-20 02:44:25,472 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:44:25,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:44:25,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581556, now seen corresponding path program 1 times [2022-03-20 02:44:25,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:44:25,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319013098] [2022-03-20 02:44:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:44:25,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:44:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:25,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:44:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:25,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:44:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:44:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:44:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:25,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:44:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:25,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:44:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:44:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 02:44:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:25,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 02:44:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:44:25,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:44:25,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319013098] [2022-03-20 02:44:25,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319013098] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:44:25,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:44:25,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 02:44:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200826339] [2022-03-20 02:44:25,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:44:25,765 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 02:44:25,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:44:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 02:44:25,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 02:44:25,766 INFO L87 Difference]: Start difference. First operand 327 states and 413 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 02:44:27,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:29,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:31,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:33,821 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:35,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:39,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:44:39,844 INFO L93 Difference]: Finished difference Result 371 states and 465 transitions. [2022-03-20 02:44:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 02:44:39,844 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2022-03-20 02:44:39,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:44:39,846 INFO L225 Difference]: With dead ends: 371 [2022-03-20 02:44:39,846 INFO L226 Difference]: Without dead ends: 346 [2022-03-20 02:44:39,846 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-03-20 02:44:39,847 INFO L913 BasicCegarLoop]: 260 mSDtfsCounter, 678 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 205 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-03-20 02:44:39,847 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 531 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 950 Invalid, 4 Unknown, 0 Unchecked, 13.7s Time] [2022-03-20 02:44:39,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-03-20 02:44:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 326. [2022-03-20 02:44:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 260 states have (on average 1.3115384615384615) internal successors, (341), 263 states have internal predecessors, (341), 35 states have call successors, (35), 29 states have call predecessors, (35), 30 states have return successors, (35), 33 states have call predecessors, (35), 31 states have call successors, (35) [2022-03-20 02:44:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 411 transitions. [2022-03-20 02:44:39,874 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 411 transitions. Word has length 80 [2022-03-20 02:44:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:44:39,876 INFO L478 AbstractCegarLoop]: Abstraction has 326 states and 411 transitions. [2022-03-20 02:44:39,877 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 02:44:39,877 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 411 transitions. [2022-03-20 02:44:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-20 02:44:39,878 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:44:39,878 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:44:39,878 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-20 02:44:39,878 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:44:39,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:44:39,878 INFO L85 PathProgramCache]: Analyzing trace with hash 664933900, now seen corresponding path program 1 times [2022-03-20 02:44:39,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:44:39,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495140121] [2022-03-20 02:44:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:44:39,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:44:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:44:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:44:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:40,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:44:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:40,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:44:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:44:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:44:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:40,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:44:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 02:44:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 02:44:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:44:40,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:44:40,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495140121] [2022-03-20 02:44:40,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495140121] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:44:40,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:44:40,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 02:44:40,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482278150] [2022-03-20 02:44:40,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:44:40,227 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 02:44:40,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:44:40,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 02:44:40,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-20 02:44:40,228 INFO L87 Difference]: Start difference. First operand 326 states and 411 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-20 02:44:42,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:45,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:46,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:44:47,307 INFO L93 Difference]: Finished difference Result 353 states and 444 transitions. [2022-03-20 02:44:47,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 02:44:47,308 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2022-03-20 02:44:47,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:44:47,309 INFO L225 Difference]: With dead ends: 353 [2022-03-20 02:44:47,309 INFO L226 Difference]: Without dead ends: 205 [2022-03-20 02:44:47,309 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2022-03-20 02:44:47,310 INFO L913 BasicCegarLoop]: 230 mSDtfsCounter, 889 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 307 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-03-20 02:44:47,310 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 453 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1286 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-03-20 02:44:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-03-20 02:44:47,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 186. [2022-03-20 02:44:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 141 states have (on average 1.2411347517730495) internal successors, (175), 144 states have internal predecessors, (175), 23 states have call successors, (23), 21 states have call predecessors, (23), 21 states have return successors, (22), 20 states have call predecessors, (22), 19 states have call successors, (22) [2022-03-20 02:44:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 220 transitions. [2022-03-20 02:44:47,330 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 220 transitions. Word has length 80 [2022-03-20 02:44:47,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:44:47,330 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 220 transitions. [2022-03-20 02:44:47,330 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-20 02:44:47,331 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 220 transitions. [2022-03-20 02:44:47,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-20 02:44:47,331 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:44:47,331 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:44:47,331 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-20 02:44:47,331 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:44:47,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:44:47,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1299022194, now seen corresponding path program 1 times [2022-03-20 02:44:47,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:44:47,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434698275] [2022-03-20 02:44:47,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:44:47,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:44:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:47,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:44:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:44:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:47,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:44:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:47,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:44:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:44:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:44:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:44:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:47,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 02:44:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:47,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 02:44:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:47,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:44:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:47,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:44:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:44:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:44:47,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:44:47,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434698275] [2022-03-20 02:44:47,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434698275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:44:47,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:44:47,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 02:44:47,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388888837] [2022-03-20 02:44:47,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:44:47,640 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 02:44:47,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:44:47,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 02:44:47,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-20 02:44:47,640 INFO L87 Difference]: Start difference. First operand 186 states and 220 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-20 02:44:49,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:51,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:53,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:55,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:57,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:44:59,267 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:01,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:03,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:45:05,765 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2022-03-20 02:45:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 02:45:05,765 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 88 [2022-03-20 02:45:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:45:05,766 INFO L225 Difference]: With dead ends: 300 [2022-03-20 02:45:05,766 INFO L226 Difference]: Without dead ends: 237 [2022-03-20 02:45:05,766 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-03-20 02:45:05,767 INFO L913 BasicCegarLoop]: 137 mSDtfsCounter, 229 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 128 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-03-20 02:45:05,767 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 462 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 959 Invalid, 7 Unknown, 0 Unchecked, 17.9s Time] [2022-03-20 02:45:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-03-20 02:45:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2022-03-20 02:45:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 152 states have (on average 1.2236842105263157) internal successors, (186), 155 states have internal predecessors, (186), 23 states have call successors, (23), 21 states have call predecessors, (23), 23 states have return successors, (24), 22 states have call predecessors, (24), 19 states have call successors, (24) [2022-03-20 02:45:05,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2022-03-20 02:45:05,788 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 88 [2022-03-20 02:45:05,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:45:05,789 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2022-03-20 02:45:05,789 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-20 02:45:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2022-03-20 02:45:05,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-20 02:45:05,789 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:45:05,789 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:45:05,789 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-20 02:45:05,789 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:45:05,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:45:05,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1324935307, now seen corresponding path program 1 times [2022-03-20 02:45:05,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:45:05,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381700967] [2022-03-20 02:45:05,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:45:05,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:45:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:45:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:05,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:45:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:05,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:45:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:05,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:05,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:45:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:06,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:45:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:06,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 02:45:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:06,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 02:45:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:45:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:06,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:45:06,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:45:06,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381700967] [2022-03-20 02:45:06,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381700967] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:45:06,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:45:06,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 02:45:06,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165168149] [2022-03-20 02:45:06,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:45:06,076 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 02:45:06,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:45:06,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 02:45:06,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 02:45:06,077 INFO L87 Difference]: Start difference. First operand 199 states and 233 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-20 02:45:08,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:12,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:12,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:45:12,659 INFO L93 Difference]: Finished difference Result 437 states and 522 transitions. [2022-03-20 02:45:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 02:45:12,659 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2022-03-20 02:45:12,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:45:12,661 INFO L225 Difference]: With dead ends: 437 [2022-03-20 02:45:12,661 INFO L226 Difference]: Without dead ends: 408 [2022-03-20 02:45:12,661 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-03-20 02:45:12,662 INFO L913 BasicCegarLoop]: 142 mSDtfsCounter, 591 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 310 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-03-20 02:45:12,662 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 296 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 445 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-03-20 02:45:12,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-03-20 02:45:12,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 345. [2022-03-20 02:45:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 268 states have (on average 1.2350746268656716) internal successors, (331), 272 states have internal predecessors, (331), 36 states have call successors, (36), 34 states have call predecessors, (36), 40 states have return successors, (42), 38 states have call predecessors, (42), 32 states have call successors, (42) [2022-03-20 02:45:12,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 409 transitions. [2022-03-20 02:45:12,699 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 409 transitions. Word has length 89 [2022-03-20 02:45:12,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:45:12,699 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 409 transitions. [2022-03-20 02:45:12,699 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-20 02:45:12,699 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 409 transitions. [2022-03-20 02:45:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-20 02:45:12,700 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:45:12,700 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:45:12,700 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-20 02:45:12,700 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:45:12,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:45:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash 450072055, now seen corresponding path program 1 times [2022-03-20 02:45:12,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:45:12,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050657378] [2022-03-20 02:45:12,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:45:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:45:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:12,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:45:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:12,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:45:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:12,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:45:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:12,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:45:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:12,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:12,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:45:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:12,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 02:45:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:12,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 02:45:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:12,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:45:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:12,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:45:12,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:45:12,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050657378] [2022-03-20 02:45:12,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050657378] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:45:12,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:45:12,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 02:45:12,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574513803] [2022-03-20 02:45:12,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:45:12,989 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 02:45:12,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:45:12,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 02:45:12,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 02:45:12,989 INFO L87 Difference]: Start difference. First operand 345 states and 409 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-20 02:45:15,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:17,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:45:18,136 INFO L93 Difference]: Finished difference Result 657 states and 796 transitions. [2022-03-20 02:45:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 02:45:18,137 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 89 [2022-03-20 02:45:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:45:18,138 INFO L225 Difference]: With dead ends: 657 [2022-03-20 02:45:18,138 INFO L226 Difference]: Without dead ends: 399 [2022-03-20 02:45:18,139 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-03-20 02:45:18,139 INFO L913 BasicCegarLoop]: 139 mSDtfsCounter, 209 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 123 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-20 02:45:18,139 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 405 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 717 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-03-20 02:45:18,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-03-20 02:45:18,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 337. [2022-03-20 02:45:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 262 states have (on average 1.2328244274809161) internal successors, (323), 266 states have internal predecessors, (323), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-20 02:45:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 399 transitions. [2022-03-20 02:45:18,183 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 399 transitions. Word has length 89 [2022-03-20 02:45:18,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:45:18,183 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 399 transitions. [2022-03-20 02:45:18,183 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (15), 9 states have call predecessors, (15), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-20 02:45:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 399 transitions. [2022-03-20 02:45:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-20 02:45:18,184 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:45:18,184 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:45:18,184 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-20 02:45:18,184 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:45:18,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:45:18,185 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 1 times [2022-03-20 02:45:18,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:45:18,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732058457] [2022-03-20 02:45:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:45:18,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:45:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:45:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:45:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:45:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:45:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:45:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 02:45:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 02:45:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 02:45:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-20 02:45:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:45:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:45:18,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:45:18,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732058457] [2022-03-20 02:45:18,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732058457] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:45:18,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:45:18,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 02:45:18,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124021922] [2022-03-20 02:45:18,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:45:18,753 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 02:45:18,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:45:18,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 02:45:18,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-20 02:45:18,754 INFO L87 Difference]: Start difference. First operand 337 states and 399 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-03-20 02:45:20,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:45:22,805 INFO L93 Difference]: Finished difference Result 675 states and 810 transitions. [2022-03-20 02:45:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 02:45:22,805 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-03-20 02:45:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:45:22,806 INFO L225 Difference]: With dead ends: 675 [2022-03-20 02:45:22,806 INFO L226 Difference]: Without dead ends: 389 [2022-03-20 02:45:22,807 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-03-20 02:45:22,807 INFO L913 BasicCegarLoop]: 139 mSDtfsCounter, 198 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 108 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-20 02:45:22,807 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 328 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 452 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-20 02:45:22,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-20 02:45:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 339. [2022-03-20 02:45:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 264 states have (on average 1.231060606060606) internal successors, (325), 268 states have internal predecessors, (325), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-20 02:45:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 401 transitions. [2022-03-20 02:45:22,849 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 401 transitions. Word has length 102 [2022-03-20 02:45:22,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:45:22,849 INFO L478 AbstractCegarLoop]: Abstraction has 339 states and 401 transitions. [2022-03-20 02:45:22,850 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (17), 9 states have call predecessors, (17), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-03-20 02:45:22,850 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 401 transitions. [2022-03-20 02:45:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-20 02:45:22,850 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:45:22,850 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:45:22,850 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-20 02:45:22,851 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:45:22,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:45:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 1 times [2022-03-20 02:45:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:45:22,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541483971] [2022-03-20 02:45:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:45:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:45:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:45:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:45:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:45:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:45:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:45:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:45:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:45:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 02:45:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 02:45:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:45:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:45:23,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:45:23,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541483971] [2022-03-20 02:45:23,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541483971] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 02:45:23,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671341884] [2022-03-20 02:45:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:45:23,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:45:23,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:45:23,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 02:45:23,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 02:45:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:24,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 02:45:24,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 02:45:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:45:24,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 02:45:24,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671341884] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:45:24,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 02:45:24,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-03-20 02:45:24,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738136083] [2022-03-20 02:45:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:45:24,575 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 02:45:24,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:45:24,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 02:45:24,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-20 02:45:24,576 INFO L87 Difference]: Start difference. First operand 339 states and 401 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2022-03-20 02:45:24,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:45:24,622 INFO L93 Difference]: Finished difference Result 435 states and 520 transitions. [2022-03-20 02:45:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 02:45:24,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) Word has length 103 [2022-03-20 02:45:24,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:45:24,623 INFO L225 Difference]: With dead ends: 435 [2022-03-20 02:45:24,623 INFO L226 Difference]: Without dead ends: 325 [2022-03-20 02:45:24,624 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-20 02:45:24,624 INFO L913 BasicCegarLoop]: 162 mSDtfsCounter, 15 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 02:45:24,624 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 629 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 02:45:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-20 02:45:24,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2022-03-20 02:45:24,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 250 states have (on average 1.22) internal successors, (305), 254 states have internal predecessors, (305), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-20 02:45:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 381 transitions. [2022-03-20 02:45:24,666 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 381 transitions. Word has length 103 [2022-03-20 02:45:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:45:24,666 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 381 transitions. [2022-03-20 02:45:24,666 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2022-03-20 02:45:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 381 transitions. [2022-03-20 02:45:24,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-20 02:45:24,667 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:45:24,667 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:45:24,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 02:45:24,883 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-20 02:45:24,883 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:45:24,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:45:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash 813900694, now seen corresponding path program 1 times [2022-03-20 02:45:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:45:24,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655316108] [2022-03-20 02:45:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:45:24,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:45:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:45:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:45:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:45:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:45:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:45:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:45:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:45:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 02:45:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 02:45:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:45:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:45:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:45:25,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:45:25,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655316108] [2022-03-20 02:45:25,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655316108] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:45:25,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:45:25,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 02:45:25,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813393821] [2022-03-20 02:45:25,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:45:25,285 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 02:45:25,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:45:25,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 02:45:25,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-03-20 02:45:25,285 INFO L87 Difference]: Start difference. First operand 325 states and 381 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-20 02:45:27,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:29,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:31,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:33,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:35,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:37,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:45:37,781 INFO L93 Difference]: Finished difference Result 459 states and 550 transitions. [2022-03-20 02:45:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 02:45:37,781 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 107 [2022-03-20 02:45:37,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:45:37,782 INFO L225 Difference]: With dead ends: 459 [2022-03-20 02:45:37,782 INFO L226 Difference]: Without dead ends: 363 [2022-03-20 02:45:37,783 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2022-03-20 02:45:37,783 INFO L913 BasicCegarLoop]: 130 mSDtfsCounter, 319 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 160 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:45:37,783 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 393 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 741 Invalid, 4 Unknown, 0 Unchecked, 12.1s Time] [2022-03-20 02:45:37,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-03-20 02:45:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 313. [2022-03-20 02:45:37,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 240 states have (on average 1.2125) internal successors, (291), 244 states have internal predecessors, (291), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-03-20 02:45:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 365 transitions. [2022-03-20 02:45:37,823 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 365 transitions. Word has length 107 [2022-03-20 02:45:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:45:37,823 INFO L478 AbstractCegarLoop]: Abstraction has 313 states and 365 transitions. [2022-03-20 02:45:37,823 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-20 02:45:37,823 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 365 transitions. [2022-03-20 02:45:37,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-20 02:45:37,825 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:45:37,825 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:45:37,825 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-20 02:45:37,825 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:45:37,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:45:37,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1477106018, now seen corresponding path program 1 times [2022-03-20 02:45:37,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:45:37,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131370171] [2022-03-20 02:45:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:45:37,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:45:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:37,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:45:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:37,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:45:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:37,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:45:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:37,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:38,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:45:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:38,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:45:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:38,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:45:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:38,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:45:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:38,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 02:45:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:38,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 02:45:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:38,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:45:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:38,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:38,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:45:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:38,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:45:38,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:45:38,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131370171] [2022-03-20 02:45:38,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131370171] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:45:38,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:45:38,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 02:45:38,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820069234] [2022-03-20 02:45:38,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:45:38,111 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 02:45:38,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:45:38,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 02:45:38,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-20 02:45:38,111 INFO L87 Difference]: Start difference. First operand 313 states and 365 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-20 02:45:39,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:41,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:43,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:45,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:47,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:50,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:45:50,417 INFO L93 Difference]: Finished difference Result 395 states and 474 transitions. [2022-03-20 02:45:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 02:45:50,418 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 109 [2022-03-20 02:45:50,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:45:50,419 INFO L225 Difference]: With dead ends: 395 [2022-03-20 02:45:50,419 INFO L226 Difference]: Without dead ends: 392 [2022-03-20 02:45:50,419 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-03-20 02:45:50,420 INFO L913 BasicCegarLoop]: 148 mSDtfsCounter, 345 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 194 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:45:50,420 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 329 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 360 Invalid, 4 Unknown, 0 Unchecked, 12.1s Time] [2022-03-20 02:45:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-03-20 02:45:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 321. [2022-03-20 02:45:50,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 248 states have (on average 1.221774193548387) internal successors, (303), 252 states have internal predecessors, (303), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-03-20 02:45:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 377 transitions. [2022-03-20 02:45:50,470 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 377 transitions. Word has length 109 [2022-03-20 02:45:50,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:45:50,470 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 377 transitions. [2022-03-20 02:45:50,470 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-20 02:45:50,470 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 377 transitions. [2022-03-20 02:45:50,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-20 02:45:50,471 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:45:50,471 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:45:50,471 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-20 02:45:50,471 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:45:50,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:45:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1629931519, now seen corresponding path program 1 times [2022-03-20 02:45:50,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:45:50,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011114391] [2022-03-20 02:45:50,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:45:50,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:45:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:45:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:45:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:45:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:45:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:45:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:45:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:45:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 02:45:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 02:45:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:45:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:45:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:45:50,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:45:50,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011114391] [2022-03-20 02:45:50,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011114391] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:45:50,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:45:50,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 02:45:50,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25105236] [2022-03-20 02:45:50,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:45:50,772 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 02:45:50,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:45:50,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 02:45:50,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-20 02:45:50,773 INFO L87 Difference]: Start difference. First operand 321 states and 377 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-20 02:45:52,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:45:53,786 INFO L93 Difference]: Finished difference Result 471 states and 566 transitions. [2022-03-20 02:45:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 02:45:53,786 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 109 [2022-03-20 02:45:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:45:53,787 INFO L225 Difference]: With dead ends: 471 [2022-03-20 02:45:53,787 INFO L226 Difference]: Without dead ends: 383 [2022-03-20 02:45:53,788 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-03-20 02:45:53,788 INFO L913 BasicCegarLoop]: 142 mSDtfsCounter, 214 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 104 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-20 02:45:53,788 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 283 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 424 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-20 02:45:53,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-03-20 02:45:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 327. [2022-03-20 02:45:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 254 states have (on average 1.2165354330708662) internal successors, (309), 258 states have internal predecessors, (309), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-03-20 02:45:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 383 transitions. [2022-03-20 02:45:53,831 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 383 transitions. Word has length 109 [2022-03-20 02:45:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:45:53,831 INFO L478 AbstractCegarLoop]: Abstraction has 327 states and 383 transitions. [2022-03-20 02:45:53,831 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-20 02:45:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 383 transitions. [2022-03-20 02:45:53,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-20 02:45:53,832 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:45:53,832 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:45:53,832 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-20 02:45:53,832 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:45:53,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:45:53,833 INFO L85 PathProgramCache]: Analyzing trace with hash -979484737, now seen corresponding path program 1 times [2022-03-20 02:45:53,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:45:53,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619364189] [2022-03-20 02:45:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:45:53,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:45:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:53,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:45:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:45:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:45:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:45:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:45:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:45:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:45:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 02:45:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 02:45:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:45:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:45:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:45:54,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:45:54,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619364189] [2022-03-20 02:45:54,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619364189] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:45:54,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:45:54,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 02:45:54,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157111472] [2022-03-20 02:45:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:45:54,175 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 02:45:54,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:45:54,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 02:45:54,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-20 02:45:54,175 INFO L87 Difference]: Start difference. First operand 327 states and 383 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, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-20 02:45:56,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:45:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:45:58,499 INFO L93 Difference]: Finished difference Result 425 states and 503 transitions. [2022-03-20 02:45:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 02:45:58,499 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, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 109 [2022-03-20 02:45:58,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:45:58,500 INFO L225 Difference]: With dead ends: 425 [2022-03-20 02:45:58,500 INFO L226 Difference]: Without dead ends: 396 [2022-03-20 02:45:58,501 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-03-20 02:45:58,501 INFO L913 BasicCegarLoop]: 147 mSDtfsCounter, 440 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 241 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:45:58,501 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 448 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 777 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-03-20 02:45:58,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-03-20 02:45:58,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 337. [2022-03-20 02:45:58,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 262 states have (on average 1.2099236641221374) internal successors, (317), 266 states have internal predecessors, (317), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-20 02:45:58,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 393 transitions. [2022-03-20 02:45:58,557 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 393 transitions. Word has length 109 [2022-03-20 02:45:58,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:45:58,557 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 393 transitions. [2022-03-20 02:45:58,558 INFO L479 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, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-20 02:45:58,558 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 393 transitions. [2022-03-20 02:45:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-20 02:45:58,558 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:45:58,558 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:45:58,559 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-20 02:45:58,559 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:45:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:45:58,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1216749988, now seen corresponding path program 1 times [2022-03-20 02:45:58,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:45:58,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994034616] [2022-03-20 02:45:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:45:58,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:45:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:45:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:45:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:45:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:45:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:45:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:45:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:45:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 02:45:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 02:45:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:45:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:45:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:45:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:45:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:45:58,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:45:58,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994034616] [2022-03-20 02:45:58,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994034616] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:45:58,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:45:58,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 02:45:58,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28650984] [2022-03-20 02:45:58,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:45:58,954 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 02:45:58,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:45:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 02:45:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-03-20 02:45:58,955 INFO L87 Difference]: Start difference. First operand 337 states and 393 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (18), 12 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-20 02:46:00,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:01,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:03,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:05,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:08,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:10,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:11,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:46:11,595 INFO L93 Difference]: Finished difference Result 426 states and 498 transitions. [2022-03-20 02:46:11,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-20 02:46:11,595 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (18), 12 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2022-03-20 02:46:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:46:11,597 INFO L225 Difference]: With dead ends: 426 [2022-03-20 02:46:11,597 INFO L226 Difference]: Without dead ends: 379 [2022-03-20 02:46:11,597 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2022-03-20 02:46:11,597 INFO L913 BasicCegarLoop]: 128 mSDtfsCounter, 769 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 349 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-03-20 02:46:11,597 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 314 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 449 Invalid, 4 Unknown, 0 Unchecked, 11.9s Time] [2022-03-20 02:46:11,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-20 02:46:11,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 331. [2022-03-20 02:46:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 256 states have (on average 1.18359375) internal successors, (303), 260 states have internal predecessors, (303), 36 states have call successors, (36), 34 states have call predecessors, (36), 38 states have return successors, (40), 36 states have call predecessors, (40), 32 states have call successors, (40) [2022-03-20 02:46:11,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 379 transitions. [2022-03-20 02:46:11,640 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 379 transitions. Word has length 110 [2022-03-20 02:46:11,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:46:11,640 INFO L478 AbstractCegarLoop]: Abstraction has 331 states and 379 transitions. [2022-03-20 02:46:11,640 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (18), 12 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-20 02:46:11,640 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 379 transitions. [2022-03-20 02:46:11,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-20 02:46:11,641 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:46:11,641 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:46:11,641 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-20 02:46:11,641 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:46:11,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:46:11,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1464166070, now seen corresponding path program 1 times [2022-03-20 02:46:11,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:46:11,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405838757] [2022-03-20 02:46:11,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:46:11,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:46:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:11,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:46:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:46:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:11,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:46:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:11,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:46:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:11,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:11,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:46:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:46:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:46:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:11,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 02:46:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 02:46:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:11,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:46:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:12,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:46:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:46:12,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:46:12,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405838757] [2022-03-20 02:46:12,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405838757] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:46:12,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:46:12,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 02:46:12,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146333069] [2022-03-20 02:46:12,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:46:12,026 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 02:46:12,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:46:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 02:46:12,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-20 02:46:12,026 INFO L87 Difference]: Start difference. First operand 331 states and 379 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-20 02:46:14,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:16,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:46:16,546 INFO L93 Difference]: Finished difference Result 439 states and 509 transitions. [2022-03-20 02:46:16,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 02:46:16,546 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 110 [2022-03-20 02:46:16,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:46:16,547 INFO L225 Difference]: With dead ends: 439 [2022-03-20 02:46:16,547 INFO L226 Difference]: Without dead ends: 370 [2022-03-20 02:46:16,548 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-03-20 02:46:16,548 INFO L913 BasicCegarLoop]: 147 mSDtfsCounter, 276 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 140 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-20 02:46:16,548 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 448 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 774 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-03-20 02:46:16,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-03-20 02:46:16,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 321. [2022-03-20 02:46:16,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 248 states have (on average 1.1653225806451613) internal successors, (289), 252 states have internal predecessors, (289), 36 states have call successors, (36), 34 states have call predecessors, (36), 36 states have return successors, (38), 34 states have call predecessors, (38), 32 states have call successors, (38) [2022-03-20 02:46:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 363 transitions. [2022-03-20 02:46:16,591 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 363 transitions. Word has length 110 [2022-03-20 02:46:16,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:46:16,591 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 363 transitions. [2022-03-20 02:46:16,591 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (18), 10 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-20 02:46:16,591 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 363 transitions. [2022-03-20 02:46:16,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-20 02:46:16,592 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:46:16,592 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:46:16,592 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-20 02:46:16,592 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:46:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:46:16,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1354625370, now seen corresponding path program 1 times [2022-03-20 02:46:16,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:46:16,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424249563] [2022-03-20 02:46:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:46:16,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:46:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:46:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:46:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:46:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:46:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:46:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:46:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:46:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 02:46:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 02:46:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:46:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:46:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:46:16,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:46:16,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424249563] [2022-03-20 02:46:16,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424249563] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:46:16,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:46:16,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 02:46:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864490583] [2022-03-20 02:46:16,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:46:16,904 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 02:46:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:46:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 02:46:16,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-20 02:46:16,904 INFO L87 Difference]: Start difference. First operand 321 states and 363 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-20 02:46:18,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:19,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:46:19,949 INFO L93 Difference]: Finished difference Result 452 states and 515 transitions. [2022-03-20 02:46:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 02:46:19,950 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2022-03-20 02:46:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:46:19,958 INFO L225 Difference]: With dead ends: 452 [2022-03-20 02:46:19,958 INFO L226 Difference]: Without dead ends: 386 [2022-03-20 02:46:19,959 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-03-20 02:46:19,959 INFO L913 BasicCegarLoop]: 135 mSDtfsCounter, 313 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 152 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-20 02:46:19,959 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 282 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 348 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-03-20 02:46:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-03-20 02:46:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 338. [2022-03-20 02:46:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 262 states have (on average 1.1450381679389312) internal successors, (300), 266 states have internal predecessors, (300), 36 states have call successors, (36), 35 states have call predecessors, (36), 39 states have return successors, (41), 36 states have call predecessors, (41), 33 states have call successors, (41) [2022-03-20 02:46:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 377 transitions. [2022-03-20 02:46:20,003 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 377 transitions. Word has length 110 [2022-03-20 02:46:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:46:20,003 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 377 transitions. [2022-03-20 02:46:20,003 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-20 02:46:20,003 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 377 transitions. [2022-03-20 02:46:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-20 02:46:20,004 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:46:20,004 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:46:20,004 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-20 02:46:20,004 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:46:20,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:46:20,004 INFO L85 PathProgramCache]: Analyzing trace with hash 820803447, now seen corresponding path program 1 times [2022-03-20 02:46:20,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:46:20,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71859776] [2022-03-20 02:46:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:46:20,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:46:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:46:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:46:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:46:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:46:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:46:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:46:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:46:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 02:46:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 02:46:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:46:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:46:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-20 02:46:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:20,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:46:20,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:46:20,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71859776] [2022-03-20 02:46:20,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71859776] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 02:46:20,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767783230] [2022-03-20 02:46:20,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:46:20,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:46:20,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:46:20,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 02:46:20,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 02:46:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:21,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 02:46:21,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 02:46:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:46:21,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 02:46:21,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767783230] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:46:21,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 02:46:21,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 16 [2022-03-20 02:46:21,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681050594] [2022-03-20 02:46:21,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:46:21,716 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 02:46:21,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:46:21,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 02:46:21,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-03-20 02:46:21,717 INFO L87 Difference]: Start difference. First operand 338 states and 377 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-03-20 02:46:22,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:46:22,211 INFO L93 Difference]: Finished difference Result 378 states and 421 transitions. [2022-03-20 02:46:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 02:46:22,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2022-03-20 02:46:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:46:22,212 INFO L225 Difference]: With dead ends: 378 [2022-03-20 02:46:22,212 INFO L226 Difference]: Without dead ends: 313 [2022-03-20 02:46:22,213 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-03-20 02:46:22,213 INFO L913 BasicCegarLoop]: 159 mSDtfsCounter, 69 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 02:46:22,213 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 363 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 02:46:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-03-20 02:46:22,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 291. [2022-03-20 02:46:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 223 states have (on average 1.1210762331838564) internal successors, (250), 225 states have internal predecessors, (250), 33 states have call successors, (33), 33 states have call predecessors, (33), 34 states have return successors, (35), 32 states have call predecessors, (35), 31 states have call successors, (35) [2022-03-20 02:46:22,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 318 transitions. [2022-03-20 02:46:22,252 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 318 transitions. Word has length 120 [2022-03-20 02:46:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:46:22,252 INFO L478 AbstractCegarLoop]: Abstraction has 291 states and 318 transitions. [2022-03-20 02:46:22,252 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-03-20 02:46:22,252 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 318 transitions. [2022-03-20 02:46:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-20 02:46:22,253 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:46:22,253 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:46:22,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 02:46:22,467 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-03-20 02:46:22,467 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:46:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:46:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1988173063, now seen corresponding path program 1 times [2022-03-20 02:46:22,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:46:22,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414635615] [2022-03-20 02:46:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:46:22,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:46:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:46:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:46:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:46:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:46:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:46:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:46:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:46:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 02:46:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 02:46:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:46:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:46:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:46:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 02:46:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:46:22,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:46:22,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414635615] [2022-03-20 02:46:22,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414635615] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:46:22,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:46:22,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-20 02:46:22,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092541269] [2022-03-20 02:46:22,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:46:22,900 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 02:46:22,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:46:22,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 02:46:22,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-03-20 02:46:22,901 INFO L87 Difference]: Start difference. First operand 291 states and 318 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 7 states have internal predecessors, (92), 3 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-20 02:46:24,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:29,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:29,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:46:29,865 INFO L93 Difference]: Finished difference Result 345 states and 383 transitions. [2022-03-20 02:46:29,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 02:46:29,865 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 7 states have internal predecessors, (92), 3 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 126 [2022-03-20 02:46:29,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:46:29,866 INFO L225 Difference]: With dead ends: 345 [2022-03-20 02:46:29,866 INFO L226 Difference]: Without dead ends: 303 [2022-03-20 02:46:29,866 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2022-03-20 02:46:29,867 INFO L913 BasicCegarLoop]: 143 mSDtfsCounter, 281 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 144 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-03-20 02:46:29,867 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 634 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1218 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-03-20 02:46:29,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-03-20 02:46:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 273. [2022-03-20 02:46:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 207 states have (on average 1.1207729468599035) internal successors, (232), 209 states have internal predecessors, (232), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (33), 30 states have call predecessors, (33), 31 states have call successors, (33) [2022-03-20 02:46:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 298 transitions. [2022-03-20 02:46:29,906 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 298 transitions. Word has length 126 [2022-03-20 02:46:29,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:46:29,906 INFO L478 AbstractCegarLoop]: Abstraction has 273 states and 298 transitions. [2022-03-20 02:46:29,906 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 7 states have internal predecessors, (92), 3 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-20 02:46:29,906 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 298 transitions. [2022-03-20 02:46:29,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-20 02:46:29,907 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:46:29,907 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:46:29,907 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-20 02:46:29,907 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:46:29,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:46:29,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1014106643, now seen corresponding path program 1 times [2022-03-20 02:46:29,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:46:29,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953007514] [2022-03-20 02:46:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:46:29,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:46:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:46:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:46:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:46:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:46:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:46:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:46:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:46:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 02:46:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 02:46:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:46:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:46:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:46:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 02:46:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:46:30,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:46:30,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953007514] [2022-03-20 02:46:30,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953007514] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:46:30,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:46:30,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 02:46:30,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142065877] [2022-03-20 02:46:30,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:46:30,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 02:46:30,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:46:30,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 02:46:30,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-03-20 02:46:30,297 INFO L87 Difference]: Start difference. First operand 273 states and 298 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-20 02:46:31,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:33,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:35,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:38,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:40,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:42,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:44,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:46,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:46:49,091 INFO L93 Difference]: Finished difference Result 323 states and 358 transitions. [2022-03-20 02:46:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 02:46:49,091 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 126 [2022-03-20 02:46:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:46:49,092 INFO L225 Difference]: With dead ends: 323 [2022-03-20 02:46:49,092 INFO L226 Difference]: Without dead ends: 303 [2022-03-20 02:46:49,093 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-03-20 02:46:49,093 INFO L913 BasicCegarLoop]: 146 mSDtfsCounter, 226 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 128 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-03-20 02:46:49,093 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 533 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 849 Invalid, 7 Unknown, 0 Unchecked, 18.6s Time] [2022-03-20 02:46:49,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-03-20 02:46:49,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 271. [2022-03-20 02:46:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 205 states have (on average 1.1121951219512196) internal successors, (228), 207 states have internal predecessors, (228), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (33), 30 states have call predecessors, (33), 31 states have call successors, (33) [2022-03-20 02:46:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 294 transitions. [2022-03-20 02:46:49,132 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 294 transitions. Word has length 126 [2022-03-20 02:46:49,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:46:49,132 INFO L478 AbstractCegarLoop]: Abstraction has 271 states and 294 transitions. [2022-03-20 02:46:49,132 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (18), 11 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-20 02:46:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 294 transitions. [2022-03-20 02:46:49,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-20 02:46:49,133 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:46:49,133 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:46:49,133 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-20 02:46:49,133 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:46:49,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:46:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash -94633934, now seen corresponding path program 1 times [2022-03-20 02:46:49,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:46:49,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323984846] [2022-03-20 02:46:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:46:49,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:46:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:46:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:46:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:46:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:46:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:46:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:46:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:46:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 02:46:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 02:46:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:46:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:46:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:46:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-20 02:46:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:46:49,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:46:49,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323984846] [2022-03-20 02:46:49,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323984846] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:46:49,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:46:49,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 02:46:49,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192570046] [2022-03-20 02:46:49,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:46:49,517 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 02:46:49,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:46:49,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 02:46:49,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-03-20 02:46:49,518 INFO L87 Difference]: Start difference. First operand 271 states and 294 transitions. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-20 02:46:51,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:53,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:46:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:46:54,483 INFO L93 Difference]: Finished difference Result 323 states and 354 transitions. [2022-03-20 02:46:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 02:46:54,484 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2022-03-20 02:46:54,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:46:54,485 INFO L225 Difference]: With dead ends: 323 [2022-03-20 02:46:54,485 INFO L226 Difference]: Without dead ends: 253 [2022-03-20 02:46:54,485 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-03-20 02:46:54,485 INFO L913 BasicCegarLoop]: 123 mSDtfsCounter, 237 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 156 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-20 02:46:54,485 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 407 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 667 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-03-20 02:46:54,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-03-20 02:46:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 233. [2022-03-20 02:46:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 173 states have (on average 1.0867052023121386) internal successors, (188), 173 states have internal predecessors, (188), 31 states have call successors, (31), 31 states have call predecessors, (31), 28 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-20 02:46:54,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 248 transitions. [2022-03-20 02:46:54,519 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 248 transitions. Word has length 127 [2022-03-20 02:46:54,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:46:54,519 INFO L478 AbstractCegarLoop]: Abstraction has 233 states and 248 transitions. [2022-03-20 02:46:54,519 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (18), 11 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-20 02:46:54,519 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 248 transitions. [2022-03-20 02:46:54,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-03-20 02:46:54,520 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:46:54,520 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:46:54,520 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-20 02:46:54,520 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:46:54,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:46:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1600651777, now seen corresponding path program 1 times [2022-03-20 02:46:54,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:46:54,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883098580] [2022-03-20 02:46:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:46:54,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:46:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:46:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:46:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:46:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:46:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:46:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:46:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:46:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 02:46:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 02:46:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:46:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:46:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:54,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:46:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 02:46:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:55,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 02:46:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:46:55,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:46:55,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883098580] [2022-03-20 02:46:55,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883098580] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 02:46:55,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905853468] [2022-03-20 02:46:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:46:55,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:46:55,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:46:55,034 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 02:46:55,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 02:46:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:56,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 02:46:56,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 02:46:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:46:56,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 02:46:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:46:56,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905853468] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 02:46:56,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-20 02:46:56,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15, 5] total 19 [2022-03-20 02:46:56,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63364554] [2022-03-20 02:46:56,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:46:56,737 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:46:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:46:56,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:46:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-20 02:46:56,738 INFO L87 Difference]: Start difference. First operand 233 states and 248 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-20 02:46:56,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:46:56,810 INFO L93 Difference]: Finished difference Result 355 states and 378 transitions. [2022-03-20 02:46:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:46:56,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2022-03-20 02:46:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:46:56,811 INFO L225 Difference]: With dead ends: 355 [2022-03-20 02:46:56,811 INFO L226 Difference]: Without dead ends: 235 [2022-03-20 02:46:56,812 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-03-20 02:46:56,812 INFO L913 BasicCegarLoop]: 143 mSDtfsCounter, 5 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 02:46:56,812 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 285 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 02:46:56,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-03-20 02:46:56,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2022-03-20 02:46:56,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 175 states have (on average 1.0857142857142856) internal successors, (190), 175 states have internal predecessors, (190), 31 states have call successors, (31), 31 states have call predecessors, (31), 28 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-20 02:46:56,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 250 transitions. [2022-03-20 02:46:56,851 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 250 transitions. Word has length 136 [2022-03-20 02:46:56,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:46:56,852 INFO L478 AbstractCegarLoop]: Abstraction has 235 states and 250 transitions. [2022-03-20 02:46:56,852 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-20 02:46:56,852 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 250 transitions. [2022-03-20 02:46:56,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-03-20 02:46:56,852 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:46:56,852 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:46:56,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 02:46:57,071 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:46:57,071 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:46:57,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:46:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash 144997928, now seen corresponding path program 1 times [2022-03-20 02:46:57,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:46:57,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809636619] [2022-03-20 02:46:57,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:46:57,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:46:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:46:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:46:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:46:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:46:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:46:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:46:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:46:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 02:46:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 02:46:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 02:46:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:46:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:46:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 02:46:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-20 02:46:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:46:57,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:46:57,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809636619] [2022-03-20 02:46:57,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809636619] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 02:46:57,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577715766] [2022-03-20 02:46:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:46:57,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:46:57,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:46:57,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 02:46:57,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 02:46:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:58,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 02:46:58,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 02:46:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:46:59,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 02:46:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:46:59,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577715766] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 02:46:59,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-20 02:46:59,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15, 5] total 19 [2022-03-20 02:46:59,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401877494] [2022-03-20 02:46:59,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:46:59,290 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 02:46:59,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:46:59,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 02:46:59,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-03-20 02:46:59,291 INFO L87 Difference]: Start difference. First operand 235 states and 250 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-20 02:46:59,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:46:59,358 INFO L93 Difference]: Finished difference Result 355 states and 376 transitions. [2022-03-20 02:46:59,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 02:46:59,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 137 [2022-03-20 02:46:59,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:46:59,359 INFO L225 Difference]: With dead ends: 355 [2022-03-20 02:46:59,359 INFO L226 Difference]: Without dead ends: 237 [2022-03-20 02:46:59,360 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-03-20 02:46:59,360 INFO L913 BasicCegarLoop]: 142 mSDtfsCounter, 5 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 02:46:59,361 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 283 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 02:46:59,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-03-20 02:46:59,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-03-20 02:46:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 177 states have (on average 1.0847457627118644) internal successors, (192), 177 states have internal predecessors, (192), 31 states have call successors, (31), 31 states have call predecessors, (31), 28 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-20 02:46:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 252 transitions. [2022-03-20 02:46:59,408 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 252 transitions. Word has length 137 [2022-03-20 02:46:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:46:59,409 INFO L478 AbstractCegarLoop]: Abstraction has 237 states and 252 transitions. [2022-03-20 02:46:59,409 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-20 02:46:59,409 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 252 transitions. [2022-03-20 02:46:59,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-03-20 02:46:59,409 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:46:59,409 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:46:59,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 02:46:59,619 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-20 02:46:59,619 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:46:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:46:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1183185629, now seen corresponding path program 1 times [2022-03-20 02:46:59,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:46:59,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665033123] [2022-03-20 02:46:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:46:59,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:46:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:59,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:46:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:46:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:59,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:46:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:59,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:59,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:46:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:59,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:46:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:46:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:46:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:00,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:47:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:00,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 02:47:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 02:47:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:00,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 02:47:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:00,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 02:47:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:00,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:47:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:00,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:47:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:00,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:47:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:00,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 02:47:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:00,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 02:47:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 02:47:00,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:47:00,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665033123] [2022-03-20 02:47:00,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665033123] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 02:47:00,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450152996] [2022-03-20 02:47:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:47:00,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:47:00,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:47:00,239 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 02:47:00,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 02:47:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:01,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 02:47:01,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 02:47:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 02:47:01,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 02:47:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 02:47:02,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450152996] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 02:47:02,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 02:47:02,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2022-03-20 02:47:02,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090818398] [2022-03-20 02:47:02,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 02:47:02,275 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 02:47:02,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:47:02,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 02:47:02,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2022-03-20 02:47:02,276 INFO L87 Difference]: Start difference. First operand 237 states and 252 transitions. Second operand has 20 states, 20 states have (on average 8.95) internal successors, (179), 10 states have internal predecessors, (179), 2 states have call successors, (44), 12 states have call predecessors, (44), 5 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-03-20 02:47:04,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:47:05,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:47:05,952 INFO L93 Difference]: Finished difference Result 441 states and 478 transitions. [2022-03-20 02:47:05,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 02:47:05,952 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.95) internal successors, (179), 10 states have internal predecessors, (179), 2 states have call successors, (44), 12 states have call predecessors, (44), 5 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 138 [2022-03-20 02:47:05,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:47:05,953 INFO L225 Difference]: With dead ends: 441 [2022-03-20 02:47:05,953 INFO L226 Difference]: Without dead ends: 253 [2022-03-20 02:47:05,954 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2022-03-20 02:47:05,954 INFO L913 BasicCegarLoop]: 124 mSDtfsCounter, 218 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 133 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:47:05,954 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 317 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 457 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-03-20 02:47:05,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-03-20 02:47:06,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 243. [2022-03-20 02:47:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 183 states have (on average 1.0819672131147542) internal successors, (198), 183 states have internal predecessors, (198), 31 states have call successors, (31), 31 states have call predecessors, (31), 28 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-20 02:47:06,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 258 transitions. [2022-03-20 02:47:06,036 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 258 transitions. Word has length 138 [2022-03-20 02:47:06,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:47:06,036 INFO L478 AbstractCegarLoop]: Abstraction has 243 states and 258 transitions. [2022-03-20 02:47:06,037 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.95) internal successors, (179), 10 states have internal predecessors, (179), 2 states have call successors, (44), 12 states have call predecessors, (44), 5 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-03-20 02:47:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 258 transitions. [2022-03-20 02:47:06,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-20 02:47:06,037 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:47:06,037 INFO L499 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:47:06,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 02:47:06,251 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:47:06,251 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:47:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:47:06,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1886974349, now seen corresponding path program 1 times [2022-03-20 02:47:06,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:47:06,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067274896] [2022-03-20 02:47:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:47:06,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:47:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:47:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:47:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:47:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:47:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:47:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:47:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:47:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 02:47:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-20 02:47:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 02:47:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 02:47:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 02:47:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:47:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:47:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:07,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:47:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 02:47:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:07,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 02:47:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 02:47:07,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:47:07,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067274896] [2022-03-20 02:47:07,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067274896] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 02:47:07,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559850910] [2022-03-20 02:47:07,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:47:07,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:47:07,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:47:07,046 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 02:47:07,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 02:47:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:08,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 2025 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-20 02:47:08,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 02:47:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 02:47:09,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 02:47:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-20 02:47:09,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559850910] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 02:47:09,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 02:47:09,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 5] total 28 [2022-03-20 02:47:09,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863918865] [2022-03-20 02:47:09,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 02:47:09,431 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-20 02:47:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:47:09,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-20 02:47:09,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2022-03-20 02:47:09,432 INFO L87 Difference]: Start difference. First operand 243 states and 258 transitions. Second operand has 28 states, 28 states have (on average 6.75) internal successors, (189), 18 states have internal predecessors, (189), 2 states have call successors, (41), 12 states have call predecessors, (41), 5 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-03-20 02:47:11,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:47:17,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:47:17,057 INFO L93 Difference]: Finished difference Result 461 states and 504 transitions. [2022-03-20 02:47:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-20 02:47:17,057 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.75) internal successors, (189), 18 states have internal predecessors, (189), 2 states have call successors, (41), 12 states have call predecessors, (41), 5 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 141 [2022-03-20 02:47:17,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:47:17,058 INFO L225 Difference]: With dead ends: 461 [2022-03-20 02:47:17,059 INFO L226 Difference]: Without dead ends: 261 [2022-03-20 02:47:17,059 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 297 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=340, Invalid=1730, Unknown=0, NotChecked=0, Total=2070 [2022-03-20 02:47:17,060 INFO L913 BasicCegarLoop]: 121 mSDtfsCounter, 238 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 145 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-03-20 02:47:17,060 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 596 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1137 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-03-20 02:47:17,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-03-20 02:47:17,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 251. [2022-03-20 02:47:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 191 states have (on average 1.0785340314136125) internal successors, (206), 191 states have internal predecessors, (206), 31 states have call successors, (31), 31 states have call predecessors, (31), 28 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-20 02:47:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 266 transitions. [2022-03-20 02:47:17,136 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 266 transitions. Word has length 141 [2022-03-20 02:47:17,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:47:17,136 INFO L478 AbstractCegarLoop]: Abstraction has 251 states and 266 transitions. [2022-03-20 02:47:17,136 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.75) internal successors, (189), 18 states have internal predecessors, (189), 2 states have call successors, (41), 12 states have call predecessors, (41), 5 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-03-20 02:47:17,136 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 266 transitions. [2022-03-20 02:47:17,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-03-20 02:47:17,137 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:47:17,137 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:47:17,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 02:47:17,337 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:47:17,338 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:47:17,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:47:17,338 INFO L85 PathProgramCache]: Analyzing trace with hash 518006570, now seen corresponding path program 2 times [2022-03-20 02:47:17,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:47:17,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575644060] [2022-03-20 02:47:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:47:17,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:47:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:47:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:17,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:47:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:17,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 02:47:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:17,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:47:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 02:47:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:47:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 02:47:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:17,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 02:47:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 02:47:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:17,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 02:47:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:18,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 02:47:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:18,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 02:47:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:18,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 02:47:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:18,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:47:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:47:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:18,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 02:47:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 02:47:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:47:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-20 02:47:18,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:47:18,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575644060] [2022-03-20 02:47:18,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575644060] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 02:47:18,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419405114] [2022-03-20 02:47:18,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 02:47:18,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:47:18,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:47:18,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 02:47:18,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process