/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-5d317bd [2022-03-18 16:19:06,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 16:19:06,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 16:19:06,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 16:19:06,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 16:19:06,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 16:19:06,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 16:19:06,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 16:19:06,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 16:19:06,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 16:19:06,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 16:19:06,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 16:19:06,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 16:19:06,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 16:19:06,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 16:19:06,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 16:19:06,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 16:19:06,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 16:19:06,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 16:19:06,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 16:19:06,213 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 16:19:06,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 16:19:06,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 16:19:06,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 16:19:06,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 16:19:06,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 16:19:06,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 16:19:06,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 16:19:06,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 16:19:06,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 16:19:06,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 16:19:06,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 16:19:06,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 16:19:06,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 16:19:06,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 16:19:06,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 16:19:06,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 16:19:06,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 16:19:06,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 16:19:06,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 16:19:06,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 16:19:06,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 16:19:06,229 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 [2022-03-18 16:19:06,254 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 16:19:06,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 16:19:06,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 16:19:06,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 16:19:06,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 16:19:06,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 16:19:06,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 16:19:06,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 16:19:06,255 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 16:19:06,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 16:19:06,256 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 16:19:06,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 16:19:06,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 16:19:06,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 16:19:06,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 16:19:06,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 16:19:06,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 16:19:06,258 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 16:19:06,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 16:19:06,258 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 16:19:06,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 16:19:06,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 16:19:06,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 16:19:06,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 16:19:06,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 16:19:06,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 16:19:06,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 16:19:06,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 16:19:06,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 16:19:06,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 16:19:06,259 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 16:19:06,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 16:19:06,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 16:19:06,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 16:19:06,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 16:19:06,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 16:19:06,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 16:19:06,483 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 16:19:06,486 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 16:19:06,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-03-18 16:19:06,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db91d0fa3/01117ce96f224c04a3b360e85eaeeec6/FLAG1c1163228 [2022-03-18 16:19:06,983 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 16:19:06,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/kbfiltr.i.cil-2.c [2022-03-18 16:19:07,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db91d0fa3/01117ce96f224c04a3b360e85eaeeec6/FLAG1c1163228 [2022-03-18 16:19:07,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db91d0fa3/01117ce96f224c04a3b360e85eaeeec6 [2022-03-18 16:19:07,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 16:19:07,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 16:19:07,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 16:19:07,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 16:19:07,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 16:19:07,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:19:07" (1/1) ... [2022-03-18 16:19:07,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@563464f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:19:07, skipping insertion in model container [2022-03-18 16:19:07,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:19:07" (1/1) ... [2022-03-18 16:19:07,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 16:19:07,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 16:19:07,453 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] [2022-03-18 16:19:07,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 16:19:07,652 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 16:19:07,687 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] [2022-03-18 16:19:07,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 16:19:07,799 INFO L208 MainTranslator]: Completed translation [2022-03-18 16:19:07,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:19:07 WrapperNode [2022-03-18 16:19:07,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 16:19:07,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 16:19:07,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 16:19:07,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 16:19:07,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:19:07" (1/1) ... [2022-03-18 16:19:07,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:19:07" (1/1) ... [2022-03-18 16:19:07,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:19:07" (1/1) ... [2022-03-18 16:19:07,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:19:07" (1/1) ... [2022-03-18 16:19:07,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:19:07" (1/1) ... [2022-03-18 16:19:07,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:19:07" (1/1) ... [2022-03-18 16:19:07,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:19:07" (1/1) ... [2022-03-18 16:19:07,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 16:19:07,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 16:19:07,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 16:19:07,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 16:19:07,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:19:07" (1/1) ... [2022-03-18 16:19:07,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 16:19:07,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:19:07,993 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) [2022-03-18 16:19:08,014 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 [2022-03-18 16:19:08,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 16:19:08,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 16:19:08,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-03-18 16:19:08,036 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 [2022-03-18 16:19:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-03-18 16:19:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 16:19:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 16:19:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-03-18 16:19:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-03-18 16:19:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IoCtl [2022-03-18 16:19:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-18 16:19:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-18 16:19:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_AddDevice [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InitializationRoutine [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_IsrHook [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_ServiceCallback [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Unload [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 16:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-18 16:19:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-18 16:19:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-18 16:19:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-18 16:19:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-18 16:19:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-18 16:19:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-18 16:19:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-18 16:19:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-18 16:19:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-18 16:19:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-18 16:19:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-18 16:19:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-18 16:19:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-18 16:19:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-18 16:19:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-18 16:19:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-18 16:19:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-18 16:19:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-18 16:19:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-18 16:19:08,041 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-18 16:19:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-18 16:19:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-18 16:19:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-18 16:19:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-18 16:19:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-18 16:19:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-18 16:19:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-18 16:19:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-18 16:19:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-18 16:19:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-18 16:19:08,062 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-18 16:19:08,062 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-18 16:19:08,062 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-18 16:19:08,062 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-18 16:19:08,062 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-18 16:19:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-18 16:19:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-18 16:19:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-18 16:19:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-18 16:19:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-18 16:19:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-18 16:19:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-18 16:19:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-18 16:19:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-18 16:19:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-18 16:19:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 16:19:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 16:19:08,063 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-18 16:19:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-18 16:19:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-18 16:19:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-18 16:19:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_AddDevice [2022-03-18 16:19:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IoCtl [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InitializationRoutine [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_IsrHook [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_ServiceCallback [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Unload [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-18 16:19:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~$Pointer$~X~$Pointer$~X~~PBOOLEAN~0~TO~~NTSTATUS~0 [2022-03-18 16:19:08,070 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 [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~PVOID~0~X~~PVOID~0~X~~PVOID~0~TO~VOID [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 16:19:08,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 16:19:08,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 16:19:08,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-18 16:19:08,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-18 16:19:08,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-18 16:19:08,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-18 16:19:08,441 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 16:19:08,443 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 16:19:08,469 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:08,536 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:08,536 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:08,537 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:08,547 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:08,547 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:08,558 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:08,563 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:08,563 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:08,564 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:08,571 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:08,572 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:08,575 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:08,581 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:08,582 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:08,864 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:08,869 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:08,870 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:08,870 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:08,898 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:08,899 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:08,899 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:08,927 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:08,927 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:08,945 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:08,952 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:08,952 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:08,952 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:08,961 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:08,961 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:08,961 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:08,977 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:08,978 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:09,009 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:09,014 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:09,014 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:09,014 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:09,019 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:09,020 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:09,029 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:09,153 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-18 16:19:09,154 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-18 16:19:09,171 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:09,191 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-18 16:19:09,192 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-18 16:19:09,204 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:09,207 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:09,207 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:09,210 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:10,409 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-18 16:19:10,410 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-18 16:19:10,505 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:10,511 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:10,511 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:10,577 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:10,582 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:10,582 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:10,595 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:10,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-18 16:19:10,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-18 16:19:10,622 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:10,631 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 16:19:10,633 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 16:19:10,685 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:10,692 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:10,692 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:10,693 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:10,726 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-18 16:19:10,726 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-18 16:19:10,728 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 16:19:10,732 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 16:19:10,733 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 16:19:10,756 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 16:19:10,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 16:19:10,769 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-18 16:19:10,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:19:10 BoogieIcfgContainer [2022-03-18 16:19:10,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 16:19:10,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 16:19:10,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 16:19:10,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 16:19:10,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 04:19:07" (1/3) ... [2022-03-18 16:19:10,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1742520b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:19:10, skipping insertion in model container [2022-03-18 16:19:10,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:19:07" (2/3) ... [2022-03-18 16:19:10,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1742520b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:19:10, skipping insertion in model container [2022-03-18 16:19:10,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:19:10" (3/3) ... [2022-03-18 16:19:10,778 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2022-03-18 16:19:10,782 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 16:19:10,782 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 16:19:10,825 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 16:19:10,832 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 [2022-03-18 16:19:10,832 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 16:19:10,858 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) [2022-03-18 16:19:10,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 16:19:10,862 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:19:10,862 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:19:10,862 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:19:10,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:19:10,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1774662017, now seen corresponding path program 1 times [2022-03-18 16:19:10,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:19:10,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787465909] [2022-03-18 16:19:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:19:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:19:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:19:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:19:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:11,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:19:11,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787465909] [2022-03-18 16:19:11,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787465909] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:19:11,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:19:11,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 16:19:11,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644834963] [2022-03-18 16:19:11,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:19:11,470 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 16:19:11,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:19:11,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 16:19:11,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 16:19:11,501 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) [2022-03-18 16:19:13,581 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 [] [2022-03-18 16:19:15,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:19:15,069 INFO L93 Difference]: Finished difference Result 643 states and 953 transitions. [2022-03-18 16:19:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 16:19:15,071 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 [2022-03-18 16:19:15,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:19:15,080 INFO L225 Difference]: With dead ends: 643 [2022-03-18 16:19:15,080 INFO L226 Difference]: Without dead ends: 343 [2022-03-18 16:19:15,084 INFO L911 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 [2022-03-18 16:19:15,086 INFO L912 BasicCegarLoop]: 332 mSDtfsCounter, 599 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 225 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s 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, 3.4s IncrementalHoareTripleChecker+Time [2022-03-18 16:19:15,087 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 460 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 378 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-03-18 16:19:15,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-18 16:19:15,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-03-18 16:19:15,137 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) [2022-03-18 16:19:15,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 407 transitions. [2022-03-18 16:19:15,139 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 407 transitions. Word has length 31 [2022-03-18 16:19:15,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:19:15,140 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 407 transitions. [2022-03-18 16:19:15,140 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) [2022-03-18 16:19:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 407 transitions. [2022-03-18 16:19:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 16:19:15,141 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:19:15,141 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:19:15,141 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 16:19:15,141 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:19:15,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:19:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash 186314115, now seen corresponding path program 1 times [2022-03-18 16:19:15,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:19:15,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085631377] [2022-03-18 16:19:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:15,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:19:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:15,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:19:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:15,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:19:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:15,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:19:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:15,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:19:15,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085631377] [2022-03-18 16:19:15,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085631377] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:19:15,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:19:15,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 16:19:15,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827583748] [2022-03-18 16:19:15,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:19:15,405 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 16:19:15,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:19:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 16:19:15,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-18 16:19:15,406 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) [2022-03-18 16:19:17,471 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 [] [2022-03-18 16:19:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:19:20,200 INFO L93 Difference]: Finished difference Result 360 states and 492 transitions. [2022-03-18 16:19:20,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 16:19:20,200 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 [2022-03-18 16:19:20,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:19:20,203 INFO L225 Difference]: With dead ends: 360 [2022-03-18 16:19:20,203 INFO L226 Difference]: Without dead ends: 343 [2022-03-18 16:19:20,203 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:19:20,204 INFO L912 BasicCegarLoop]: 313 mSDtfsCounter, 602 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 223 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-03-18 16:19:20,204 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 682 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1361 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-03-18 16:19:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-18 16:19:20,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 299. [2022-03-18 16:19:20,235 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) [2022-03-18 16:19:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 406 transitions. [2022-03-18 16:19:20,237 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 406 transitions. Word has length 31 [2022-03-18 16:19:20,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:19:20,237 INFO L478 AbstractCegarLoop]: Abstraction has 299 states and 406 transitions. [2022-03-18 16:19:20,237 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) [2022-03-18 16:19:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 406 transitions. [2022-03-18 16:19:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 16:19:20,239 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:19:20,239 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:19:20,239 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 16:19:20,239 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:19:20,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:19:20,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1201516382, now seen corresponding path program 1 times [2022-03-18 16:19:20,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:19:20,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205682397] [2022-03-18 16:19:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:20,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:19:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:20,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:19:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:19:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:20,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:19:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:20,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:20,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:19:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:20,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:20,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:19:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:20,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:19:20,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205682397] [2022-03-18 16:19:20,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205682397] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:19:20,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:19:20,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 16:19:20,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741430596] [2022-03-18 16:19:20,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:19:20,673 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 16:19:20,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:19:20,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 16:19:20,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:19:20,677 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) [2022-03-18 16:19:22,749 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 [] [2022-03-18 16:19:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:19:25,827 INFO L93 Difference]: Finished difference Result 599 states and 829 transitions. [2022-03-18 16:19:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 16:19:25,827 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 [2022-03-18 16:19:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:19:25,831 INFO L225 Difference]: With dead ends: 599 [2022-03-18 16:19:25,832 INFO L226 Difference]: Without dead ends: 348 [2022-03-18 16:19:25,832 INFO L911 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 [2022-03-18 16:19:25,833 INFO L912 BasicCegarLoop]: 312 mSDtfsCounter, 743 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 325 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:19:25,833 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 734 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1537 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-03-18 16:19:25,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-03-18 16:19:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 303. [2022-03-18 16:19:25,867 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) [2022-03-18 16:19:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 410 transitions. [2022-03-18 16:19:25,868 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 410 transitions. Word has length 53 [2022-03-18 16:19:25,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:19:25,868 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 410 transitions. [2022-03-18 16:19:25,868 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) [2022-03-18 16:19:25,869 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 410 transitions. [2022-03-18 16:19:25,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 16:19:25,870 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:19:25,870 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:19:25,870 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 16:19:25,870 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:19:25,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:19:25,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1078281185, now seen corresponding path program 1 times [2022-03-18 16:19:25,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:19:25,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344811631] [2022-03-18 16:19:25,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:25,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:19:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:19:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:26,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:19:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:19:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:26,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:26,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:19:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:26,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:26,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:19:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:26,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:19:26,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344811631] [2022-03-18 16:19:26,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344811631] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:19:26,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:19:26,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 16:19:26,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416963467] [2022-03-18 16:19:26,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:19:26,119 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 16:19:26,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:19:26,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 16:19:26,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 16:19:26,121 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) [2022-03-18 16:19:28,244 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 [] [2022-03-18 16:19:30,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:19:30,120 INFO L93 Difference]: Finished difference Result 492 states and 667 transitions. [2022-03-18 16:19:30,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 16:19:30,121 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 [2022-03-18 16:19:30,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:19:30,124 INFO L225 Difference]: With dead ends: 492 [2022-03-18 16:19:30,124 INFO L226 Difference]: Without dead ends: 431 [2022-03-18 16:19:30,125 INFO L911 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 [2022-03-18 16:19:30,125 INFO L912 BasicCegarLoop]: 363 mSDtfsCounter, 1002 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 364 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:19:30,126 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1007 Valid, 574 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 852 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-03-18 16:19:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-03-18 16:19:30,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 374. [2022-03-18 16:19:30,153 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) [2022-03-18 16:19:30,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 498 transitions. [2022-03-18 16:19:30,155 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 498 transitions. Word has length 53 [2022-03-18 16:19:30,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:19:30,157 INFO L478 AbstractCegarLoop]: Abstraction has 374 states and 498 transitions. [2022-03-18 16:19:30,157 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) [2022-03-18 16:19:30,157 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 498 transitions. [2022-03-18 16:19:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 16:19:30,165 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:19:30,168 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:19:30,168 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 16:19:30,169 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:19:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:19:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash 17478568, now seen corresponding path program 1 times [2022-03-18 16:19:30,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:19:30,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213305272] [2022-03-18 16:19:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:30,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:19:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:30,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:19:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:19:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:30,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:19:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:19:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:30,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:19:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 16:19:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:30,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:19:30,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213305272] [2022-03-18 16:19:30,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213305272] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:19:30,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:19:30,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 16:19:30,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817765204] [2022-03-18 16:19:30,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:19:30,435 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 16:19:30,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:19:30,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 16:19:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 16:19:30,436 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) [2022-03-18 16:19:32,555 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 [] [2022-03-18 16:19:34,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:19:34,489 INFO L93 Difference]: Finished difference Result 569 states and 751 transitions. [2022-03-18 16:19:34,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 16:19:34,490 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 [2022-03-18 16:19:34,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:19:34,492 INFO L225 Difference]: With dead ends: 569 [2022-03-18 16:19:34,492 INFO L226 Difference]: Without dead ends: 450 [2022-03-18 16:19:34,493 INFO L911 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 [2022-03-18 16:19:34,493 INFO L912 BasicCegarLoop]: 318 mSDtfsCounter, 857 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 276 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 3.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:19:34,494 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 552 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 780 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-18 16:19:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-18 16:19:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 410. [2022-03-18 16:19:34,531 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) [2022-03-18 16:19:34,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 545 transitions. [2022-03-18 16:19:34,533 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 545 transitions. Word has length 60 [2022-03-18 16:19:34,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:19:34,533 INFO L478 AbstractCegarLoop]: Abstraction has 410 states and 545 transitions. [2022-03-18 16:19:34,534 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) [2022-03-18 16:19:34,534 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 545 transitions. [2022-03-18 16:19:34,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 16:19:34,534 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:19:34,535 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:19:34,535 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 16:19:34,535 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:19:34,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:19:34,535 INFO L85 PathProgramCache]: Analyzing trace with hash -110356200, now seen corresponding path program 1 times [2022-03-18 16:19:34,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:19:34,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689222770] [2022-03-18 16:19:34,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:34,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:19:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:34,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:19:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:34,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:19:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:34,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:19:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:34,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:19:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:34,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:19:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:34,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 16:19:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:34,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:19:34,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689222770] [2022-03-18 16:19:34,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689222770] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:19:34,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:19:34,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 16:19:34,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17623738] [2022-03-18 16:19:34,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:19:34,924 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 16:19:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:19:34,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 16:19:34,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:19:34,925 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) [2022-03-18 16:19:37,084 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 [] [2022-03-18 16:19:39,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:19:39,454 INFO L93 Difference]: Finished difference Result 450 states and 594 transitions. [2022-03-18 16:19:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 16:19:39,454 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 [2022-03-18 16:19:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:19:39,457 INFO L225 Difference]: With dead ends: 450 [2022-03-18 16:19:39,457 INFO L226 Difference]: Without dead ends: 442 [2022-03-18 16:19:39,457 INFO L911 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 [2022-03-18 16:19:39,458 INFO L912 BasicCegarLoop]: 332 mSDtfsCounter, 1948 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 651 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:19:39,458 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 557 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 781 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-03-18 16:19:39,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-03-18 16:19:39,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 415. [2022-03-18 16:19:39,506 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) [2022-03-18 16:19:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 551 transitions. [2022-03-18 16:19:39,509 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 551 transitions. Word has length 60 [2022-03-18 16:19:39,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:19:39,510 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 551 transitions. [2022-03-18 16:19:39,510 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) [2022-03-18 16:19:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 551 transitions. [2022-03-18 16:19:39,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 16:19:39,511 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:19:39,511 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:19:39,511 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 16:19:39,511 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:19:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:19:39,512 INFO L85 PathProgramCache]: Analyzing trace with hash 400358010, now seen corresponding path program 1 times [2022-03-18 16:19:39,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:19:39,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569826033] [2022-03-18 16:19:39,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:39,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:19:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:39,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:19:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:39,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:19:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:39,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:19:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:19:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:39,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:19:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:39,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:19:39,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569826033] [2022-03-18 16:19:39,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569826033] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:19:39,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:19:39,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 16:19:39,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063058565] [2022-03-18 16:19:39,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:19:39,788 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 16:19:39,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:19:39,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 16:19:39,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 16:19:39,789 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) [2022-03-18 16:19:41,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:19:42,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:19:44,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:19:46,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:19:46,567 INFO L93 Difference]: Finished difference Result 433 states and 574 transitions. [2022-03-18 16:19:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 16:19:46,567 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 [2022-03-18 16:19:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:19:46,569 INFO L225 Difference]: With dead ends: 433 [2022-03-18 16:19:46,569 INFO L226 Difference]: Without dead ends: 429 [2022-03-18 16:19:46,569 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:19:46,570 INFO L912 BasicCegarLoop]: 297 mSDtfsCounter, 723 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 260 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:19:46,570 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 505 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 794 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-03-18 16:19:46,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-03-18 16:19:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 414. [2022-03-18 16:19:46,597 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) [2022-03-18 16:19:46,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 548 transitions. [2022-03-18 16:19:46,599 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 548 transitions. Word has length 62 [2022-03-18 16:19:46,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:19:46,600 INFO L478 AbstractCegarLoop]: Abstraction has 414 states and 548 transitions. [2022-03-18 16:19:46,600 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) [2022-03-18 16:19:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 548 transitions. [2022-03-18 16:19:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-18 16:19:46,601 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:19:46,602 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:19:46,602 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 16:19:46,602 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:19:46,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:19:46,602 INFO L85 PathProgramCache]: Analyzing trace with hash 466089939, now seen corresponding path program 1 times [2022-03-18 16:19:46,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:19:46,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459882928] [2022-03-18 16:19:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:46,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:19:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:46,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:19:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:19:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:46,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:19:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:46,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:46,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:19:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:46,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:19:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:46,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 16:19:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:46,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:19:46,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459882928] [2022-03-18 16:19:46,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459882928] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:19:46,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:19:46,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 16:19:46,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097260109] [2022-03-18 16:19:46,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:19:46,928 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 16:19:46,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:19:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 16:19:46,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:19:46,929 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) [2022-03-18 16:19:49,078 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 [] [2022-03-18 16:19:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:19:51,435 INFO L93 Difference]: Finished difference Result 448 states and 589 transitions. [2022-03-18 16:19:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 16:19:51,435 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 [2022-03-18 16:19:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:19:51,437 INFO L225 Difference]: With dead ends: 448 [2022-03-18 16:19:51,437 INFO L226 Difference]: Without dead ends: 440 [2022-03-18 16:19:51,438 INFO L911 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 [2022-03-18 16:19:51,440 INFO L912 BasicCegarLoop]: 336 mSDtfsCounter, 1095 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 369 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:19:51,440 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 545 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-03-18 16:19:51,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-03-18 16:19:51,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 415. [2022-03-18 16:19:51,466 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) [2022-03-18 16:19:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 549 transitions. [2022-03-18 16:19:51,468 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 549 transitions. Word has length 61 [2022-03-18 16:19:51,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:19:51,468 INFO L478 AbstractCegarLoop]: Abstraction has 415 states and 549 transitions. [2022-03-18 16:19:51,468 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) [2022-03-18 16:19:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 549 transitions. [2022-03-18 16:19:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 16:19:51,470 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:19:51,470 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:19:51,470 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 16:19:51,470 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:19:51,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:19:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1325055407, now seen corresponding path program 1 times [2022-03-18 16:19:51,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:19:51,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572018876] [2022-03-18 16:19:51,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:51,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:19:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:19:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:19:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:51,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:19:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:51,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:19:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:51,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:51,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:19:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:51,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 16:19:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:51,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:19:51,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572018876] [2022-03-18 16:19:51,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572018876] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:19:51,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:19:51,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 16:19:51,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842934058] [2022-03-18 16:19:51,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:19:51,778 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 16:19:51,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:19:51,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 16:19:51,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:19:51,779 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) [2022-03-18 16:19:53,896 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 [] [2022-03-18 16:19:56,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:19:56,322 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2022-03-18 16:19:56,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 16:19:56,322 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 [2022-03-18 16:19:56,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:19:56,324 INFO L225 Difference]: With dead ends: 442 [2022-03-18 16:19:56,324 INFO L226 Difference]: Without dead ends: 389 [2022-03-18 16:19:56,324 INFO L911 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 [2022-03-18 16:19:56,325 INFO L912 BasicCegarLoop]: 337 mSDtfsCounter, 1191 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 384 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:19:56,325 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1199 Valid, 610 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1070 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-03-18 16:19:56,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-18 16:19:56,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-03-18 16:19:56,348 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) [2022-03-18 16:19:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 493 transitions. [2022-03-18 16:19:56,349 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 493 transitions. Word has length 62 [2022-03-18 16:19:56,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:19:56,350 INFO L478 AbstractCegarLoop]: Abstraction has 371 states and 493 transitions. [2022-03-18 16:19:56,350 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) [2022-03-18 16:19:56,350 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 493 transitions. [2022-03-18 16:19:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-18 16:19:56,351 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:19:56,351 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:19:56,351 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-18 16:19:56,351 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:19:56,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:19:56,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1052170321, now seen corresponding path program 1 times [2022-03-18 16:19:56,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:19:56,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851838002] [2022-03-18 16:19:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:19:56,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:19:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:56,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:19:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:56,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:19:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:19:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:56,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:56,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:19:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:19:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:19:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:56,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 16:19:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:56,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:19:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:19:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:19:56,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:19:56,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851838002] [2022-03-18 16:19:56,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851838002] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:19:56,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:19:56,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 16:19:56,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028975272] [2022-03-18 16:19:56,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:19:56,738 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 16:19:56,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:19:56,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 16:19:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:19:56,739 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) [2022-03-18 16:19:58,933 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 [] [2022-03-18 16:20:01,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:01,143 INFO L93 Difference]: Finished difference Result 417 states and 550 transitions. [2022-03-18 16:20:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 16:20:01,143 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 [2022-03-18 16:20:01,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:01,145 INFO L225 Difference]: With dead ends: 417 [2022-03-18 16:20:01,145 INFO L226 Difference]: Without dead ends: 409 [2022-03-18 16:20:01,145 INFO L911 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 [2022-03-18 16:20:01,146 INFO L912 BasicCegarLoop]: 276 mSDtfsCounter, 1485 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 497 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:01,146 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 606 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1444 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-18 16:20:01,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-18 16:20:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2022-03-18 16:20:01,207 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) [2022-03-18 16:20:01,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 511 transitions. [2022-03-18 16:20:01,209 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 511 transitions. Word has length 72 [2022-03-18 16:20:01,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:01,209 INFO L478 AbstractCegarLoop]: Abstraction has 386 states and 511 transitions. [2022-03-18 16:20:01,209 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) [2022-03-18 16:20:01,209 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 511 transitions. [2022-03-18 16:20:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-18 16:20:01,210 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:01,210 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:01,210 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-18 16:20:01,210 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2144673722, now seen corresponding path program 1 times [2022-03-18 16:20:01,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:01,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757576504] [2022-03-18 16:20:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:01,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:01,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:01,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:20:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:01,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:01,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:20:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:01,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:20:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:01,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 16:20:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:20:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:01,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:01,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757576504] [2022-03-18 16:20:01,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757576504] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:20:01,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:20:01,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 16:20:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015820401] [2022-03-18 16:20:01,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:20:01,536 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 16:20:01,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:20:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 16:20:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:20:01,537 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) [2022-03-18 16:20:03,648 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 [] [2022-03-18 16:20:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:05,181 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2022-03-18 16:20:05,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 16:20:05,182 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 [2022-03-18 16:20:05,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:05,183 INFO L225 Difference]: With dead ends: 417 [2022-03-18 16:20:05,183 INFO L226 Difference]: Without dead ends: 409 [2022-03-18 16:20:05,184 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-03-18 16:20:05,184 INFO L912 BasicCegarLoop]: 279 mSDtfsCounter, 1459 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 483 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:05,184 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1471 Valid, 466 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 760 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-03-18 16:20:05,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-18 16:20:05,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 387. [2022-03-18 16:20:05,210 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) [2022-03-18 16:20:05,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 512 transitions. [2022-03-18 16:20:05,211 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 512 transitions. Word has length 73 [2022-03-18 16:20:05,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:05,211 INFO L478 AbstractCegarLoop]: Abstraction has 387 states and 512 transitions. [2022-03-18 16:20:05,211 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) [2022-03-18 16:20:05,211 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 512 transitions. [2022-03-18 16:20:05,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-18 16:20:05,212 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:05,212 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:05,212 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-18 16:20:05,212 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1821545128, now seen corresponding path program 1 times [2022-03-18 16:20:05,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:05,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519377648] [2022-03-18 16:20:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:05,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:05,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:05,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:20:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:05,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:05,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:20:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:05,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:05,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:20:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:05,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 16:20:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:05,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:20:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:05,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:05,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519377648] [2022-03-18 16:20:05,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519377648] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:20:05,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:20:05,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 16:20:05,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012648042] [2022-03-18 16:20:05,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:20:05,473 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 16:20:05,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:20:05,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 16:20:05,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:20:05,473 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) [2022-03-18 16:20:07,597 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 [] [2022-03-18 16:20:09,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:09,402 INFO L93 Difference]: Finished difference Result 419 states and 554 transitions. [2022-03-18 16:20:09,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 16:20:09,403 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 [2022-03-18 16:20:09,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:09,405 INFO L225 Difference]: With dead ends: 419 [2022-03-18 16:20:09,405 INFO L226 Difference]: Without dead ends: 396 [2022-03-18 16:20:09,405 INFO L911 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 [2022-03-18 16:20:09,405 INFO L912 BasicCegarLoop]: 272 mSDtfsCounter, 978 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 323 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:09,405 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [988 Valid, 453 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 659 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-18 16:20:09,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-03-18 16:20:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 381. [2022-03-18 16:20:09,431 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) [2022-03-18 16:20:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 501 transitions. [2022-03-18 16:20:09,432 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 501 transitions. Word has length 74 [2022-03-18 16:20:09,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:09,432 INFO L478 AbstractCegarLoop]: Abstraction has 381 states and 501 transitions. [2022-03-18 16:20:09,432 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) [2022-03-18 16:20:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 501 transitions. [2022-03-18 16:20:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-18 16:20:09,433 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:09,433 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:09,434 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-18 16:20:09,434 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:09,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:09,434 INFO L85 PathProgramCache]: Analyzing trace with hash 937494245, now seen corresponding path program 1 times [2022-03-18 16:20:09,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:09,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752806797] [2022-03-18 16:20:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:09,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:09,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:09,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:20:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:20:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:09,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:09,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:20:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 16:20:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 16:20:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:09,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:09,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752806797] [2022-03-18 16:20:09,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752806797] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:20:09,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:20:09,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 16:20:09,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237133377] [2022-03-18 16:20:09,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:20:09,723 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 16:20:09,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:20:09,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 16:20:09,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:20:09,724 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) [2022-03-18 16:20:11,847 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 [] [2022-03-18 16:20:13,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:13,845 INFO L93 Difference]: Finished difference Result 437 states and 561 transitions. [2022-03-18 16:20:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 16:20:13,846 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 [2022-03-18 16:20:13,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:13,848 INFO L225 Difference]: With dead ends: 437 [2022-03-18 16:20:13,848 INFO L226 Difference]: Without dead ends: 374 [2022-03-18 16:20:13,848 INFO L911 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 [2022-03-18 16:20:13,849 INFO L912 BasicCegarLoop]: 313 mSDtfsCounter, 1167 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 376 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:13,849 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 566 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 841 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-03-18 16:20:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-03-18 16:20:13,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2022-03-18 16:20:13,874 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) [2022-03-18 16:20:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 447 transitions. [2022-03-18 16:20:13,875 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 447 transitions. Word has length 77 [2022-03-18 16:20:13,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:13,875 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 447 transitions. [2022-03-18 16:20:13,875 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) [2022-03-18 16:20:13,876 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 447 transitions. [2022-03-18 16:20:13,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-18 16:20:13,876 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:13,877 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:13,877 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-18 16:20:13,877 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:13,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:13,877 INFO L85 PathProgramCache]: Analyzing trace with hash 641442499, now seen corresponding path program 1 times [2022-03-18 16:20:13,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:13,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897868865] [2022-03-18 16:20:13,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:13,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:14,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:14,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:14,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:20:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:14,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:20:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:14,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:14,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:20:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:14,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 16:20:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:14,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:20:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:14,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:14,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897868865] [2022-03-18 16:20:14,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897868865] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:20:14,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:20:14,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 16:20:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850997908] [2022-03-18 16:20:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:20:14,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 16:20:14,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:20:14,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 16:20:14,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:20:14,162 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) [2022-03-18 16:20:16,229 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 [] [2022-03-18 16:20:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:19,560 INFO L93 Difference]: Finished difference Result 417 states and 534 transitions. [2022-03-18 16:20:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 16:20:19,560 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 [2022-03-18 16:20:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:19,562 INFO L225 Difference]: With dead ends: 417 [2022-03-18 16:20:19,562 INFO L226 Difference]: Without dead ends: 359 [2022-03-18 16:20:19,562 INFO L911 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 [2022-03-18 16:20:19,563 INFO L912 BasicCegarLoop]: 278 mSDtfsCounter, 791 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 298 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:19,563 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 742 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1652 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-03-18 16:20:19,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-03-18 16:20:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2022-03-18 16:20:19,587 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) [2022-03-18 16:20:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 442 transitions. [2022-03-18 16:20:19,588 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 442 transitions. Word has length 75 [2022-03-18 16:20:19,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:19,588 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 442 transitions. [2022-03-18 16:20:19,588 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) [2022-03-18 16:20:19,588 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 442 transitions. [2022-03-18 16:20:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-18 16:20:19,589 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:19,589 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:19,589 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-18 16:20:19,590 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:19,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:19,590 INFO L85 PathProgramCache]: Analyzing trace with hash 476602328, now seen corresponding path program 1 times [2022-03-18 16:20:19,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:19,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114032396] [2022-03-18 16:20:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:19,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:19,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:19,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:20:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:19,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:19,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:20:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:20:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 16:20:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:20:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:19,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:19,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114032396] [2022-03-18 16:20:19,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114032396] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:20:19,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:20:19,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 16:20:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197432300] [2022-03-18 16:20:19,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:20:19,897 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 16:20:19,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:20:19,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 16:20:19,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:20:19,898 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) [2022-03-18 16:20:22,110 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 [] [2022-03-18 16:20:25,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:25,983 INFO L93 Difference]: Finished difference Result 422 states and 536 transitions. [2022-03-18 16:20:25,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-18 16:20:25,983 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 [2022-03-18 16:20:25,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:25,984 INFO L225 Difference]: With dead ends: 422 [2022-03-18 16:20:25,985 INFO L226 Difference]: Without dead ends: 379 [2022-03-18 16:20:25,985 INFO L911 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 [2022-03-18 16:20:25,986 INFO L912 BasicCegarLoop]: 303 mSDtfsCounter, 1336 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 488 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:25,986 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 606 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 1392 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-03-18 16:20:25,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-18 16:20:26,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 344. [2022-03-18 16:20:26,032 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) [2022-03-18 16:20:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 439 transitions. [2022-03-18 16:20:26,033 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 439 transitions. Word has length 76 [2022-03-18 16:20:26,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:26,033 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 439 transitions. [2022-03-18 16:20:26,033 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) [2022-03-18 16:20:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 439 transitions. [2022-03-18 16:20:26,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-18 16:20:26,034 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:26,034 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:26,034 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-18 16:20:26,034 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:26,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:26,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1346047832, now seen corresponding path program 1 times [2022-03-18 16:20:26,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:26,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468495819] [2022-03-18 16:20:26,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:26,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:26,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:26,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:26,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:20:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:26,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:20:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:26,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:20:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 16:20:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:26,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:26,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:26,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468495819] [2022-03-18 16:20:26,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468495819] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:20:26,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:20:26,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 16:20:26,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615463051] [2022-03-18 16:20:26,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:20:26,272 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 16:20:26,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:20:26,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 16:20:26,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:20:26,272 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) [2022-03-18 16:20:28,336 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 [] [2022-03-18 16:20:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:30,316 INFO L93 Difference]: Finished difference Result 378 states and 480 transitions. [2022-03-18 16:20:30,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 16:20:30,316 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 [2022-03-18 16:20:30,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:30,317 INFO L225 Difference]: With dead ends: 378 [2022-03-18 16:20:30,317 INFO L226 Difference]: Without dead ends: 355 [2022-03-18 16:20:30,318 INFO L911 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 [2022-03-18 16:20:30,318 INFO L912 BasicCegarLoop]: 274 mSDtfsCounter, 889 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 297 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:30,318 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 569 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 889 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-03-18 16:20:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-03-18 16:20:30,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 335. [2022-03-18 16:20:30,343 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) [2022-03-18 16:20:30,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 429 transitions. [2022-03-18 16:20:30,344 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 429 transitions. Word has length 76 [2022-03-18 16:20:30,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:30,344 INFO L478 AbstractCegarLoop]: Abstraction has 335 states and 429 transitions. [2022-03-18 16:20:30,345 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) [2022-03-18 16:20:30,345 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 429 transitions. [2022-03-18 16:20:30,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-18 16:20:30,346 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:30,346 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:30,346 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-18 16:20:30,346 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:30,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:30,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2131421, now seen corresponding path program 1 times [2022-03-18 16:20:30,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:30,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104185751] [2022-03-18 16:20:30,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:30,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:30,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:30,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:30,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:20:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:30,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:30,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:20:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:30,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:20:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:30,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 16:20:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:30,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:20:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:30,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:30,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104185751] [2022-03-18 16:20:30,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104185751] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:20:30,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:20:30,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 16:20:30,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54817760] [2022-03-18 16:20:30,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:20:30,699 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 16:20:30,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:20:30,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 16:20:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:20:30,700 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) [2022-03-18 16:20:32,760 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 [] [2022-03-18 16:20:35,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:35,459 INFO L93 Difference]: Finished difference Result 398 states and 505 transitions. [2022-03-18 16:20:35,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 16:20:35,460 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 [2022-03-18 16:20:35,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:35,461 INFO L225 Difference]: With dead ends: 398 [2022-03-18 16:20:35,461 INFO L226 Difference]: Without dead ends: 354 [2022-03-18 16:20:35,461 INFO L911 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 [2022-03-18 16:20:35,462 INFO L912 BasicCegarLoop]: 269 mSDtfsCounter, 655 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 234 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:35,462 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 921 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 2317 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-03-18 16:20:35,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-18 16:20:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 334. [2022-03-18 16:20:35,485 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) [2022-03-18 16:20:35,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 427 transitions. [2022-03-18 16:20:35,486 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 427 transitions. Word has length 78 [2022-03-18 16:20:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:35,486 INFO L478 AbstractCegarLoop]: Abstraction has 334 states and 427 transitions. [2022-03-18 16:20:35,486 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) [2022-03-18 16:20:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 427 transitions. [2022-03-18 16:20:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-18 16:20:35,487 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:35,487 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:35,487 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-18 16:20:35,487 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:35,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:35,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1889602735, now seen corresponding path program 1 times [2022-03-18 16:20:35,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:35,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383835487] [2022-03-18 16:20:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:35,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:35,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:35,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:35,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:20:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:35,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:35,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:20:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:35,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:20:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:35,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 16:20:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:35,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:35,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:35,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383835487] [2022-03-18 16:20:35,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383835487] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:20:35,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:20:35,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 16:20:35,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192198267] [2022-03-18 16:20:35,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:20:35,837 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 16:20:35,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:20:35,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 16:20:35,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-18 16:20:35,838 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) [2022-03-18 16:20:37,915 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 [] [2022-03-18 16:20:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:44,973 INFO L93 Difference]: Finished difference Result 475 states and 607 transitions. [2022-03-18 16:20:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 16:20:44,974 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 [2022-03-18 16:20:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:44,975 INFO L225 Difference]: With dead ends: 475 [2022-03-18 16:20:44,975 INFO L226 Difference]: Without dead ends: 367 [2022-03-18 16:20:44,976 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-03-18 16:20:44,976 INFO L912 BasicCegarLoop]: 267 mSDtfsCounter, 461 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 2884 mSolverCounterSat, 151 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 3036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2884 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:44,976 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1020 Invalid, 3036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2884 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-03-18 16:20:44,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-03-18 16:20:45,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 338. [2022-03-18 16:20:45,005 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) [2022-03-18 16:20:45,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 432 transitions. [2022-03-18 16:20:45,006 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 432 transitions. Word has length 79 [2022-03-18 16:20:45,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:45,006 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 432 transitions. [2022-03-18 16:20:45,006 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) [2022-03-18 16:20:45,007 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 432 transitions. [2022-03-18 16:20:45,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-18 16:20:45,007 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:45,008 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:45,008 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-18 16:20:45,008 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:45,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2045108737, now seen corresponding path program 1 times [2022-03-18 16:20:45,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:45,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796456668] [2022-03-18 16:20:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:45,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:45,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:45,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:45,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:20:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:45,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:45,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:20:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:45,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:20:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:45,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 16:20:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:45,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:20:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:45,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:45,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796456668] [2022-03-18 16:20:45,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796456668] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:20:45,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:20:45,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:20:45,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999311638] [2022-03-18 16:20:45,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:20:45,346 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:20:45,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:20:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:20:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:20:45,346 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) [2022-03-18 16:20:47,470 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 [] [2022-03-18 16:20:49,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:49,373 INFO L93 Difference]: Finished difference Result 429 states and 546 transitions. [2022-03-18 16:20:49,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 16:20:49,374 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 [2022-03-18 16:20:49,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:49,375 INFO L225 Difference]: With dead ends: 429 [2022-03-18 16:20:49,375 INFO L226 Difference]: Without dead ends: 376 [2022-03-18 16:20:49,376 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2022-03-18 16:20:49,376 INFO L912 BasicCegarLoop]: 278 mSDtfsCounter, 1294 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 442 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:49,376 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 509 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 977 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-03-18 16:20:49,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-03-18 16:20:49,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 329. [2022-03-18 16:20:49,443 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) [2022-03-18 16:20:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 418 transitions. [2022-03-18 16:20:49,444 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 418 transitions. Word has length 79 [2022-03-18 16:20:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:49,444 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 418 transitions. [2022-03-18 16:20:49,444 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) [2022-03-18 16:20:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 418 transitions. [2022-03-18 16:20:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-18 16:20:49,445 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:49,445 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:49,445 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-18 16:20:49,445 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:49,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:49,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1773831806, now seen corresponding path program 1 times [2022-03-18 16:20:49,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:49,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869903592] [2022-03-18 16:20:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:49,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:49,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:49,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:20:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:49,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:49,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:20:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:49,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:20:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:49,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 16:20:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 16:20:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:49,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 16:20:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:49,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:49,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869903592] [2022-03-18 16:20:49,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869903592] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:20:49,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:20:49,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 16:20:49,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970697180] [2022-03-18 16:20:49,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:20:49,764 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 16:20:49,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:20:49,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 16:20:49,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:20:49,764 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) [2022-03-18 16:20:51,883 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 [] [2022-03-18 16:20:53,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:53,868 INFO L93 Difference]: Finished difference Result 416 states and 527 transitions. [2022-03-18 16:20:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 16:20:53,869 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 [2022-03-18 16:20:53,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:53,870 INFO L225 Difference]: With dead ends: 416 [2022-03-18 16:20:53,870 INFO L226 Difference]: Without dead ends: 357 [2022-03-18 16:20:53,871 INFO L911 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 [2022-03-18 16:20:53,871 INFO L912 BasicCegarLoop]: 264 mSDtfsCounter, 730 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 254 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:53,871 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 540 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 849 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-18 16:20:53,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-03-18 16:20:53,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 327. [2022-03-18 16:20:53,933 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) [2022-03-18 16:20:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 413 transitions. [2022-03-18 16:20:53,934 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 413 transitions. Word has length 84 [2022-03-18 16:20:53,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:53,936 INFO L478 AbstractCegarLoop]: Abstraction has 327 states and 413 transitions. [2022-03-18 16:20:53,936 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) [2022-03-18 16:20:53,936 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 413 transitions. [2022-03-18 16:20:53,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-18 16:20:53,937 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:53,937 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:53,937 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-18 16:20:53,937 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:53,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:53,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581556, now seen corresponding path program 1 times [2022-03-18 16:20:53,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:53,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472010780] [2022-03-18 16:20:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:53,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:54,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:20:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:54,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:54,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:20:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:20:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:54,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 16:20:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:20:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:54,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:54,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472010780] [2022-03-18 16:20:54,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472010780] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:20:54,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:20:54,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:20:54,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091568531] [2022-03-18 16:20:54,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:20:54,264 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:20:54,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:20:54,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:20:54,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:20:54,265 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) [2022-03-18 16:20:56,340 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 [] [2022-03-18 16:20:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:20:58,234 INFO L93 Difference]: Finished difference Result 371 states and 465 transitions. [2022-03-18 16:20:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:20:58,235 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 [2022-03-18 16:20:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:20:58,236 INFO L225 Difference]: With dead ends: 371 [2022-03-18 16:20:58,236 INFO L226 Difference]: Without dead ends: 346 [2022-03-18 16:20:58,236 INFO L911 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 [2022-03-18 16:20:58,237 INFO L912 BasicCegarLoop]: 257 mSDtfsCounter, 969 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 317 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:20:58,237 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 453 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 823 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-03-18 16:20:58,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-03-18 16:20:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 326. [2022-03-18 16:20:58,272 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) [2022-03-18 16:20:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 411 transitions. [2022-03-18 16:20:58,273 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 411 transitions. Word has length 80 [2022-03-18 16:20:58,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:20:58,273 INFO L478 AbstractCegarLoop]: Abstraction has 326 states and 411 transitions. [2022-03-18 16:20:58,273 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) [2022-03-18 16:20:58,273 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 411 transitions. [2022-03-18 16:20:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-18 16:20:58,274 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:20:58,274 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:20:58,274 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-18 16:20:58,274 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:20:58,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:20:58,274 INFO L85 PathProgramCache]: Analyzing trace with hash 664933900, now seen corresponding path program 1 times [2022-03-18 16:20:58,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:20:58,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547682826] [2022-03-18 16:20:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:20:58,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:20:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:58,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:20:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:58,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:20:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:58,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:20:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:58,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:20:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:58,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:20:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:58,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:20:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 16:20:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:58,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-18 16:20:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:20:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:20:58,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:20:58,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547682826] [2022-03-18 16:20:58,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547682826] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:20:58,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:20:58,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 16:20:58,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241121796] [2022-03-18 16:20:58,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:20:58,619 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 16:20:58,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:20:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 16:20:58,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:20:58,619 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) [2022-03-18 16:21:02,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:21:04,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:21:06,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:21:10,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:21:10,281 INFO L93 Difference]: Finished difference Result 353 states and 444 transitions. [2022-03-18 16:21:10,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 16:21:10,281 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 [2022-03-18 16:21:10,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:21:10,282 INFO L225 Difference]: With dead ends: 353 [2022-03-18 16:21:10,282 INFO L226 Difference]: Without dead ends: 205 [2022-03-18 16:21:10,283 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2022-03-18 16:21:10,283 INFO L912 BasicCegarLoop]: 232 mSDtfsCounter, 655 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 220 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:21:10,283 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 468 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1412 Invalid, 2 Unknown, 0 Unchecked, 11.1s Time] [2022-03-18 16:21:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-03-18 16:21:10,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 186. [2022-03-18 16:21:10,303 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) [2022-03-18 16:21:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 220 transitions. [2022-03-18 16:21:10,303 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 220 transitions. Word has length 80 [2022-03-18 16:21:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:21:10,303 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 220 transitions. [2022-03-18 16:21:10,304 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) [2022-03-18 16:21:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 220 transitions. [2022-03-18 16:21:10,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-18 16:21:10,304 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:21:10,304 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:21:10,304 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-18 16:21:10,304 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:21:10,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:21:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1299022194, now seen corresponding path program 1 times [2022-03-18 16:21:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:21:10,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064601319] [2022-03-18 16:21:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:21:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:21:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:21:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:21:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:21:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:10,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:21:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:10,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:21:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:10,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 16:21:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:10,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 16:21:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:10,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:21:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:10,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:21:10,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:21:10,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064601319] [2022-03-18 16:21:10,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064601319] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:21:10,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:21:10,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 16:21:10,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659820372] [2022-03-18 16:21:10,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:21:10,651 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 16:21:10,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:21:10,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 16:21:10,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-18 16:21:10,654 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) [2022-03-18 16:21:12,728 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 [] [2022-03-18 16:21:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:21:15,803 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2022-03-18 16:21:15,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 16:21:15,804 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 [2022-03-18 16:21:15,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:21:15,805 INFO L225 Difference]: With dead ends: 300 [2022-03-18 16:21:15,805 INFO L226 Difference]: Without dead ends: 237 [2022-03-18 16:21:15,805 INFO L911 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 [2022-03-18 16:21:15,805 INFO L912 BasicCegarLoop]: 136 mSDtfsCounter, 170 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:21:15,805 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 461 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-03-18 16:21:15,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-03-18 16:21:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2022-03-18 16:21:15,825 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) [2022-03-18 16:21:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2022-03-18 16:21:15,825 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 88 [2022-03-18 16:21:15,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:21:15,826 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2022-03-18 16:21:15,826 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) [2022-03-18 16:21:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2022-03-18 16:21:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-18 16:21:15,826 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:21:15,826 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:21:15,826 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-18 16:21:15,827 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:21:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:21:15,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1324935307, now seen corresponding path program 1 times [2022-03-18 16:21:15,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:21:15,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786537476] [2022-03-18 16:21:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:21:15,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:21:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:15,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:21:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:21:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:16,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:21:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:16,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:16,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:21:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:16,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:16,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:21:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:16,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 16:21:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:16,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 16:21:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:16,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:21:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:16,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:21:16,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:21:16,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786537476] [2022-03-18 16:21:16,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786537476] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:21:16,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:21:16,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 16:21:16,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749444160] [2022-03-18 16:21:16,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:21:16,143 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 16:21:16,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:21:16,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 16:21:16,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-18 16:21:16,144 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) [2022-03-18 16:21:19,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:21:21,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:21:23,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:21:25,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:21:26,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:21:26,726 INFO L93 Difference]: Finished difference Result 437 states and 522 transitions. [2022-03-18 16:21:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 16:21:26,727 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 [2022-03-18 16:21:26,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:21:26,728 INFO L225 Difference]: With dead ends: 437 [2022-03-18 16:21:26,728 INFO L226 Difference]: Without dead ends: 408 [2022-03-18 16:21:26,729 INFO L911 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 [2022-03-18 16:21:26,730 INFO L912 BasicCegarLoop]: 144 mSDtfsCounter, 470 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 234 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-03-18 16:21:26,730 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 327 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 507 Invalid, 4 Unknown, 0 Unchecked, 10.3s Time] [2022-03-18 16:21:26,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-03-18 16:21:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 345. [2022-03-18 16:21:26,785 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) [2022-03-18 16:21:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 409 transitions. [2022-03-18 16:21:26,786 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 409 transitions. Word has length 89 [2022-03-18 16:21:26,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:21:26,786 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 409 transitions. [2022-03-18 16:21:26,786 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) [2022-03-18 16:21:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 409 transitions. [2022-03-18 16:21:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-18 16:21:26,787 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:21:26,787 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:21:26,787 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-18 16:21:26,787 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:21:26,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:21:26,787 INFO L85 PathProgramCache]: Analyzing trace with hash 450072055, now seen corresponding path program 1 times [2022-03-18 16:21:26,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:21:26,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288717443] [2022-03-18 16:21:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:21:26,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:21:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:21:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:26,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:21:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:26,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:21:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:26,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:26,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:21:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:27,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:27,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 16:21:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 16:21:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:27,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 16:21:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:21:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:21:27,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:21:27,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288717443] [2022-03-18 16:21:27,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288717443] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:21:27,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:21:27,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 16:21:27,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644357806] [2022-03-18 16:21:27,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:21:27,069 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:21:27,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:21:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:21:27,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:21:27,070 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) [2022-03-18 16:21:29,137 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 [] [2022-03-18 16:21:31,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:21:31,790 INFO L93 Difference]: Finished difference Result 657 states and 796 transitions. [2022-03-18 16:21:31,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 16:21:31,794 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 [2022-03-18 16:21:31,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:21:31,796 INFO L225 Difference]: With dead ends: 657 [2022-03-18 16:21:31,796 INFO L226 Difference]: Without dead ends: 399 [2022-03-18 16:21:31,796 INFO L911 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 [2022-03-18 16:21:31,796 INFO L912 BasicCegarLoop]: 139 mSDtfsCounter, 270 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 164 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:21:31,797 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 391 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 645 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-03-18 16:21:31,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-03-18 16:21:31,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 337. [2022-03-18 16:21:31,837 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) [2022-03-18 16:21:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 399 transitions. [2022-03-18 16:21:31,838 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 399 transitions. Word has length 89 [2022-03-18 16:21:31,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:21:31,838 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 399 transitions. [2022-03-18 16:21:31,839 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) [2022-03-18 16:21:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 399 transitions. [2022-03-18 16:21:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-18 16:21:31,839 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:21:31,839 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:21:31,840 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-18 16:21:31,840 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:21:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:21:31,840 INFO L85 PathProgramCache]: Analyzing trace with hash -623916271, now seen corresponding path program 1 times [2022-03-18 16:21:31,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:21:31,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404921998] [2022-03-18 16:21:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:21:31,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:21:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:21:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:21:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:21:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:21:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:21:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 16:21:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 16:21:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 16:21:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 16:21:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:21:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:21:32,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:21:32,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404921998] [2022-03-18 16:21:32,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404921998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:21:32,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:21:32,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 16:21:32,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199510106] [2022-03-18 16:21:32,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:21:32,364 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 16:21:32,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:21:32,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 16:21:32,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:21:32,364 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) [2022-03-18 16:21:34,428 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 [] [2022-03-18 16:21:35,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:21:35,821 INFO L93 Difference]: Finished difference Result 675 states and 810 transitions. [2022-03-18 16:21:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 16:21:35,821 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 [2022-03-18 16:21:35,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:21:35,822 INFO L225 Difference]: With dead ends: 675 [2022-03-18 16:21:35,822 INFO L226 Difference]: Without dead ends: 389 [2022-03-18 16:21:35,823 INFO L911 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 [2022-03-18 16:21:35,823 INFO L912 BasicCegarLoop]: 139 mSDtfsCounter, 145 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 76 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:21:35,823 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 328 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 525 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-03-18 16:21:35,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-03-18 16:21:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 339. [2022-03-18 16:21:35,862 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) [2022-03-18 16:21:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 401 transitions. [2022-03-18 16:21:35,863 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 401 transitions. Word has length 102 [2022-03-18 16:21:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:21:35,863 INFO L478 AbstractCegarLoop]: Abstraction has 339 states and 401 transitions. [2022-03-18 16:21:35,864 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) [2022-03-18 16:21:35,864 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 401 transitions. [2022-03-18 16:21:35,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-18 16:21:35,864 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:21:35,864 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:21:35,864 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-18 16:21:35,865 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:21:35,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:21:35,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1023672093, now seen corresponding path program 1 times [2022-03-18 16:21:35,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:21:35,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723739580] [2022-03-18 16:21:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:21:35,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:21:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:21:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:21:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:21:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:21:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:21:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:21:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:21:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 16:21:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 16:21:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:21:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:21:36,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:21:36,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723739580] [2022-03-18 16:21:36,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723739580] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:21:36,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767730248] [2022-03-18 16:21:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:21:36,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:21:36,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:21:36,588 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) [2022-03-18 16:21:36,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 16:21:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:37,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 16:21:37,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:21:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:21:37,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 16:21:37,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767730248] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:21:37,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 16:21:37,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-03-18 16:21:37,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010752816] [2022-03-18 16:21:37,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:21:37,710 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 16:21:37,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:21:37,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 16:21:37,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:21:37,711 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) [2022-03-18 16:21:37,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:21:37,760 INFO L93 Difference]: Finished difference Result 435 states and 520 transitions. [2022-03-18 16:21:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 16:21:37,761 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 [2022-03-18 16:21:37,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:21:37,762 INFO L225 Difference]: With dead ends: 435 [2022-03-18 16:21:37,762 INFO L226 Difference]: Without dead ends: 325 [2022-03-18 16:21:37,762 INFO L911 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 [2022-03-18 16:21:37,763 INFO L912 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 [2022-03-18 16:21:37,763 INFO L913 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] [2022-03-18 16:21:37,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-18 16:21:37,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2022-03-18 16:21:37,803 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) [2022-03-18 16:21:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 381 transitions. [2022-03-18 16:21:37,804 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 381 transitions. Word has length 103 [2022-03-18 16:21:37,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:21:37,804 INFO L478 AbstractCegarLoop]: Abstraction has 325 states and 381 transitions. [2022-03-18 16:21:37,804 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) [2022-03-18 16:21:37,804 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 381 transitions. [2022-03-18 16:21:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-18 16:21:37,805 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:21:37,805 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:21:37,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 16:21:38,022 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 [2022-03-18 16:21:38,023 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:21:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:21:38,023 INFO L85 PathProgramCache]: Analyzing trace with hash 813900694, now seen corresponding path program 1 times [2022-03-18 16:21:38,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:21:38,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473863933] [2022-03-18 16:21:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:21:38,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:21:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:21:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:21:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:21:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:21:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:21:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:21:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:21:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 16:21:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 16:21:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:21:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:21:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:21:38,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:21:38,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473863933] [2022-03-18 16:21:38,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473863933] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:21:38,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:21:38,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 16:21:38,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450262903] [2022-03-18 16:21:38,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:21:38,446 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 16:21:38,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:21:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 16:21:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:21:38,447 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) [2022-03-18 16:21:40,597 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 [] [2022-03-18 16:21:42,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:21:42,527 INFO L93 Difference]: Finished difference Result 459 states and 550 transitions. [2022-03-18 16:21:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 16:21:42,527 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 [2022-03-18 16:21:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:21:42,528 INFO L225 Difference]: With dead ends: 459 [2022-03-18 16:21:42,528 INFO L226 Difference]: Without dead ends: 363 [2022-03-18 16:21:42,529 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2022-03-18 16:21:42,529 INFO L912 BasicCegarLoop]: 130 mSDtfsCounter, 376 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 191 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:21:42,529 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 354 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 626 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-03-18 16:21:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-03-18 16:21:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 313. [2022-03-18 16:21:42,566 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) [2022-03-18 16:21:42,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 365 transitions. [2022-03-18 16:21:42,567 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 365 transitions. Word has length 107 [2022-03-18 16:21:42,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:21:42,567 INFO L478 AbstractCegarLoop]: Abstraction has 313 states and 365 transitions. [2022-03-18 16:21:42,567 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) [2022-03-18 16:21:42,568 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 365 transitions. [2022-03-18 16:21:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-18 16:21:42,568 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:21:42,568 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:21:42,568 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-18 16:21:42,569 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:21:42,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:21:42,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1477106018, now seen corresponding path program 1 times [2022-03-18 16:21:42,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:21:42,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204641611] [2022-03-18 16:21:42,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:21:42,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:21:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:21:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:21:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:21:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:21:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:21:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:21:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:21:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 16:21:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 16:21:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:21:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:21:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:21:42,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:21:42,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204641611] [2022-03-18 16:21:42,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204641611] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:21:42,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:21:42,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 16:21:42,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157047973] [2022-03-18 16:21:42,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:21:42,899 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 16:21:42,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:21:42,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 16:21:42,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:21:42,899 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) [2022-03-18 16:21:44,963 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 [] [2022-03-18 16:21:45,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:21:45,844 INFO L93 Difference]: Finished difference Result 395 states and 474 transitions. [2022-03-18 16:21:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:21:45,853 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 [2022-03-18 16:21:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:21:45,854 INFO L225 Difference]: With dead ends: 395 [2022-03-18 16:21:45,854 INFO L226 Difference]: Without dead ends: 392 [2022-03-18 16:21:45,855 INFO L911 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 [2022-03-18 16:21:45,855 INFO L912 BasicCegarLoop]: 148 mSDtfsCounter, 415 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 218 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-18 16:21:45,855 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 296 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 310 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-03-18 16:21:45,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-03-18 16:21:45,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 321. [2022-03-18 16:21:45,906 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) [2022-03-18 16:21:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 377 transitions. [2022-03-18 16:21:45,907 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 377 transitions. Word has length 109 [2022-03-18 16:21:45,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:21:45,907 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 377 transitions. [2022-03-18 16:21:45,907 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) [2022-03-18 16:21:45,907 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 377 transitions. [2022-03-18 16:21:45,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-18 16:21:45,908 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:21:45,908 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:21:45,908 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-18 16:21:45,908 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:21:45,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:21:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1629931519, now seen corresponding path program 1 times [2022-03-18 16:21:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:21:45,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142153842] [2022-03-18 16:21:45,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:21:45,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:21:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:21:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:21:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:21:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:21:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:21:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:21:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:21:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 16:21:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 16:21:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:21:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:21:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:21:46,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:21:46,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142153842] [2022-03-18 16:21:46,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142153842] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:21:46,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:21:46,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 16:21:46,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237037808] [2022-03-18 16:21:46,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:21:46,263 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 16:21:46,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:21:46,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 16:21:46,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:21:46,263 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) [2022-03-18 16:21:48,328 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 [] [2022-03-18 16:21:49,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:21:49,311 INFO L93 Difference]: Finished difference Result 471 states and 566 transitions. [2022-03-18 16:21:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 16:21:49,311 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 [2022-03-18 16:21:49,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:21:49,312 INFO L225 Difference]: With dead ends: 471 [2022-03-18 16:21:49,312 INFO L226 Difference]: Without dead ends: 383 [2022-03-18 16:21:49,313 INFO L911 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 [2022-03-18 16:21:49,313 INFO L912 BasicCegarLoop]: 142 mSDtfsCounter, 325 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 170 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-18 16:21:49,314 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 312 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 379 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-18 16:21:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-03-18 16:21:49,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 327. [2022-03-18 16:21:49,377 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) [2022-03-18 16:21:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 383 transitions. [2022-03-18 16:21:49,378 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 383 transitions. Word has length 109 [2022-03-18 16:21:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:21:49,379 INFO L478 AbstractCegarLoop]: Abstraction has 327 states and 383 transitions. [2022-03-18 16:21:49,379 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) [2022-03-18 16:21:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 383 transitions. [2022-03-18 16:21:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-18 16:21:49,379 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:21:49,379 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:21:49,380 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-18 16:21:49,380 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:21:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:21:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash -979484737, now seen corresponding path program 1 times [2022-03-18 16:21:49,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:21:49,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71446608] [2022-03-18 16:21:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:21:49,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:21:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:21:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:21:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:21:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:21:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:21:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:21:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:21:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 16:21:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 16:21:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:21:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:21:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:21:49,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:21:49,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71446608] [2022-03-18 16:21:49,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71446608] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:21:49,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:21:49,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 16:21:49,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191758389] [2022-03-18 16:21:49,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:21:49,728 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 16:21:49,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:21:49,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 16:21:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:21:49,729 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) [2022-03-18 16:21:51,798 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 [] [2022-03-18 16:21:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:21:53,308 INFO L93 Difference]: Finished difference Result 425 states and 503 transitions. [2022-03-18 16:21:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:21:53,309 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 [2022-03-18 16:21:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:21:53,310 INFO L225 Difference]: With dead ends: 425 [2022-03-18 16:21:53,310 INFO L226 Difference]: Without dead ends: 396 [2022-03-18 16:21:53,310 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:21:53,314 INFO L912 BasicCegarLoop]: 147 mSDtfsCounter, 384 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 206 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-18 16:21:53,315 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 448 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 787 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-03-18 16:21:53,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-03-18 16:21:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 337. [2022-03-18 16:21:53,355 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) [2022-03-18 16:21:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 393 transitions. [2022-03-18 16:21:53,356 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 393 transitions. Word has length 109 [2022-03-18 16:21:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:21:53,356 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 393 transitions. [2022-03-18 16:21:53,356 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) [2022-03-18 16:21:53,356 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 393 transitions. [2022-03-18 16:21:53,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-18 16:21:53,357 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:21:53,357 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:21:53,357 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-18 16:21:53,357 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:21:53,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:21:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1216749988, now seen corresponding path program 1 times [2022-03-18 16:21:53,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:21:53,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270397213] [2022-03-18 16:21:53,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:21:53,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:21:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:21:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:21:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:21:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:21:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:21:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:21:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:21:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 16:21:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 16:21:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:21:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:21:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:21:53,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:21:53,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270397213] [2022-03-18 16:21:53,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270397213] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:21:53,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:21:53,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 16:21:53,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581805609] [2022-03-18 16:21:53,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:21:53,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 16:21:53,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:21:53,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 16:21:53,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:21:53,785 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) [2022-03-18 16:21:55,923 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 [] [2022-03-18 16:21:57,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:21:57,529 INFO L93 Difference]: Finished difference Result 426 states and 498 transitions. [2022-03-18 16:21:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 16:21:57,530 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 [2022-03-18 16:21:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:21:57,531 INFO L225 Difference]: With dead ends: 426 [2022-03-18 16:21:57,531 INFO L226 Difference]: Without dead ends: 379 [2022-03-18 16:21:57,531 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2022-03-18 16:21:57,532 INFO L912 BasicCegarLoop]: 128 mSDtfsCounter, 436 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 188 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:21:57,532 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 311 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 540 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-18 16:21:57,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-03-18 16:21:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 331. [2022-03-18 16:21:57,575 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) [2022-03-18 16:21:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 379 transitions. [2022-03-18 16:21:57,576 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 379 transitions. Word has length 110 [2022-03-18 16:21:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:21:57,576 INFO L478 AbstractCegarLoop]: Abstraction has 331 states and 379 transitions. [2022-03-18 16:21:57,576 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) [2022-03-18 16:21:57,576 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 379 transitions. [2022-03-18 16:21:57,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-18 16:21:57,577 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:21:57,577 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:21:57,577 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-18 16:21:57,577 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:21:57,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:21:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1464166070, now seen corresponding path program 1 times [2022-03-18 16:21:57,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:21:57,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051976700] [2022-03-18 16:21:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:21:57,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:21:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:21:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:21:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:21:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:21:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:21:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:21:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:21:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 16:21:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 16:21:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:21:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:21:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:21:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:21:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:21:57,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:21:57,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051976700] [2022-03-18 16:21:57,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051976700] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:21:57,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:21:57,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-18 16:21:57,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492978361] [2022-03-18 16:21:57,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:21:57,997 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 16:21:57,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:21:57,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 16:21:57,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:21:57,998 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) [2022-03-18 16:22:00,071 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 [] [2022-03-18 16:22:02,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:22:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:22:03,596 INFO L93 Difference]: Finished difference Result 439 states and 509 transitions. [2022-03-18 16:22:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:22:03,597 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 [2022-03-18 16:22:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:22:03,598 INFO L225 Difference]: With dead ends: 439 [2022-03-18 16:22:03,598 INFO L226 Difference]: Without dead ends: 370 [2022-03-18 16:22:03,598 INFO L911 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 [2022-03-18 16:22:03,599 INFO L912 BasicCegarLoop]: 147 mSDtfsCounter, 259 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 147 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-03-18 16:22:03,599 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 481 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 833 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-03-18 16:22:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-03-18 16:22:03,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 321. [2022-03-18 16:22:03,662 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) [2022-03-18 16:22:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 363 transitions. [2022-03-18 16:22:03,663 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 363 transitions. Word has length 110 [2022-03-18 16:22:03,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:22:03,663 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 363 transitions. [2022-03-18 16:22:03,663 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) [2022-03-18 16:22:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 363 transitions. [2022-03-18 16:22:03,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-18 16:22:03,664 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:22:03,664 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:22:03,664 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-18 16:22:03,664 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:22:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:22:03,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1354625370, now seen corresponding path program 1 times [2022-03-18 16:22:03,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:22:03,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504441238] [2022-03-18 16:22:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:03,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:22:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:22:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:22:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:22:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:22:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:22:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:22:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:22:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 16:22:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 16:22:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:22:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:22:03,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:22:03,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504441238] [2022-03-18 16:22:03,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504441238] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:22:03,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:22:03,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 16:22:03,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465092904] [2022-03-18 16:22:03,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:22:03,974 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 16:22:03,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:22:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 16:22:03,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-03-18 16:22:03,975 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) [2022-03-18 16:22:06,040 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 [] [2022-03-18 16:22:07,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:22:07,237 INFO L93 Difference]: Finished difference Result 452 states and 515 transitions. [2022-03-18 16:22:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:22:07,237 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 [2022-03-18 16:22:07,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:22:07,238 INFO L225 Difference]: With dead ends: 452 [2022-03-18 16:22:07,238 INFO L226 Difference]: Without dead ends: 386 [2022-03-18 16:22:07,239 INFO L911 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 [2022-03-18 16:22:07,239 INFO L912 BasicCegarLoop]: 135 mSDtfsCounter, 244 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 123 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:22:07,239 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 312 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 386 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-03-18 16:22:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-03-18 16:22:07,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 338. [2022-03-18 16:22:07,281 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) [2022-03-18 16:22:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 377 transitions. [2022-03-18 16:22:07,282 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 377 transitions. Word has length 110 [2022-03-18 16:22:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:22:07,282 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 377 transitions. [2022-03-18 16:22:07,282 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) [2022-03-18 16:22:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 377 transitions. [2022-03-18 16:22:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-18 16:22:07,283 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:22:07,283 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:22:07,283 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-18 16:22:07,283 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:22:07,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:22:07,283 INFO L85 PathProgramCache]: Analyzing trace with hash 820803447, now seen corresponding path program 1 times [2022-03-18 16:22:07,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:22:07,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966010507] [2022-03-18 16:22:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:07,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:22:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:22:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:22:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:22:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:22:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:22:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:22:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:22:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 16:22:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 16:22:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:22:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:07,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 16:22:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:22:08,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:22:08,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966010507] [2022-03-18 16:22:08,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966010507] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:22:08,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567922552] [2022-03-18 16:22:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:08,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:22:08,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:22:08,014 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) [2022-03-18 16:22:08,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 16:22:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:09,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 16:22:09,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:22:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:22:09,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 16:22:09,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567922552] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:22:09,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 16:22:09,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 16 [2022-03-18 16:22:09,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574208540] [2022-03-18 16:22:09,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:22:09,327 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 16:22:09,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:22:09,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 16:22:09,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-03-18 16:22:09,328 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) [2022-03-18 16:22:10,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:22:10,516 INFO L93 Difference]: Finished difference Result 378 states and 421 transitions. [2022-03-18 16:22:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 16:22:10,517 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 [2022-03-18 16:22:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:22:10,518 INFO L225 Difference]: With dead ends: 378 [2022-03-18 16:22:10,518 INFO L226 Difference]: Without dead ends: 313 [2022-03-18 16:22:10,518 INFO L911 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 [2022-03-18 16:22:10,519 INFO L912 BasicCegarLoop]: 159 mSDtfsCounter, 69 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:22:10,519 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 363 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 16:22:10,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-03-18 16:22:10,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 291. [2022-03-18 16:22:10,556 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) [2022-03-18 16:22:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 318 transitions. [2022-03-18 16:22:10,557 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 318 transitions. Word has length 120 [2022-03-18 16:22:10,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:22:10,557 INFO L478 AbstractCegarLoop]: Abstraction has 291 states and 318 transitions. [2022-03-18 16:22:10,557 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) [2022-03-18 16:22:10,557 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 318 transitions. [2022-03-18 16:22:10,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-18 16:22:10,558 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:22:10,558 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:22:10,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 16:22:10,773 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 [2022-03-18 16:22:10,774 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:22:10,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:22:10,774 INFO L85 PathProgramCache]: Analyzing trace with hash -783486713, now seen corresponding path program 1 times [2022-03-18 16:22:10,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:22:10,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761461524] [2022-03-18 16:22:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:10,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:22:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:10,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:22:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:22:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:10,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:22:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:10,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:10,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:22:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:11,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:22:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:11,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:22:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:11,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:22:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:11,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 16:22:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:11,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:22:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:11,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:22:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:11,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:11,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 16:22:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:22:11,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:22:11,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761461524] [2022-03-18 16:22:11,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761461524] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:22:11,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:22:11,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-18 16:22:11,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64529480] [2022-03-18 16:22:11,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:22:11,237 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 16:22:11,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:22:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 16:22:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-03-18 16:22:11,238 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) [2022-03-18 16:22:13,314 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 [] [2022-03-18 16:22:15,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:22:15,905 INFO L93 Difference]: Finished difference Result 345 states and 383 transitions. [2022-03-18 16:22:15,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 16:22:15,906 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 [2022-03-18 16:22:15,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:22:15,928 INFO L225 Difference]: With dead ends: 345 [2022-03-18 16:22:15,928 INFO L226 Difference]: Without dead ends: 303 [2022-03-18 16:22:15,929 INFO L911 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 [2022-03-18 16:22:15,934 INFO L912 BasicCegarLoop]: 143 mSDtfsCounter, 290 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 156 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-18 16:22:15,935 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 644 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1223 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-03-18 16:22:15,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-03-18 16:22:15,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 273. [2022-03-18 16:22:15,978 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) [2022-03-18 16:22:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 298 transitions. [2022-03-18 16:22:15,979 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 298 transitions. Word has length 126 [2022-03-18 16:22:15,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:22:15,979 INFO L478 AbstractCegarLoop]: Abstraction has 273 states and 298 transitions. [2022-03-18 16:22:15,980 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) [2022-03-18 16:22:15,980 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 298 transitions. [2022-03-18 16:22:15,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-18 16:22:15,980 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:22:15,980 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:22:15,980 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-18 16:22:15,980 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:22:15,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:22:15,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1014106643, now seen corresponding path program 1 times [2022-03-18 16:22:15,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:22:15,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838732030] [2022-03-18 16:22:15,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:15,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:22:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:22:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:22:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:22:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:22:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:22:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:22:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:22:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 16:22:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:22:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:22:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 16:22:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:22:16,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:22:16,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838732030] [2022-03-18 16:22:16,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838732030] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:22:16,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:22:16,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 16:22:16,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067762712] [2022-03-18 16:22:16,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:22:16,367 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 16:22:16,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:22:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 16:22:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-03-18 16:22:16,368 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) [2022-03-18 16:22:18,455 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 [] [2022-03-18 16:22:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:22:20,935 INFO L93 Difference]: Finished difference Result 323 states and 358 transitions. [2022-03-18 16:22:20,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:22:20,936 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 [2022-03-18 16:22:20,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:22:20,937 INFO L225 Difference]: With dead ends: 323 [2022-03-18 16:22:20,937 INFO L226 Difference]: Without dead ends: 303 [2022-03-18 16:22:20,937 INFO L911 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 [2022-03-18 16:22:20,937 INFO L912 BasicCegarLoop]: 131 mSDtfsCounter, 142 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 73 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-18 16:22:20,938 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 442 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 981 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-03-18 16:22:20,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-03-18 16:22:20,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 271. [2022-03-18 16:22:20,975 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) [2022-03-18 16:22:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 294 transitions. [2022-03-18 16:22:20,976 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 294 transitions. Word has length 126 [2022-03-18 16:22:20,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:22:20,976 INFO L478 AbstractCegarLoop]: Abstraction has 271 states and 294 transitions. [2022-03-18 16:22:20,977 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) [2022-03-18 16:22:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 294 transitions. [2022-03-18 16:22:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-18 16:22:20,977 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:22:20,977 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:22:20,978 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-18 16:22:20,978 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:22:20,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:22:20,978 INFO L85 PathProgramCache]: Analyzing trace with hash -94633934, now seen corresponding path program 1 times [2022-03-18 16:22:20,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:22:20,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874892506] [2022-03-18 16:22:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:20,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:22:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:22:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:22:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:22:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:22:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:22:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:22:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:22:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 16:22:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:22:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:22:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 16:22:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:22:21,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:22:21,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874892506] [2022-03-18 16:22:21,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874892506] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:22:21,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:22:21,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-18 16:22:21,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525471368] [2022-03-18 16:22:21,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:22:21,455 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-18 16:22:21,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:22:21,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-18 16:22:21,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-03-18 16:22:21,455 INFO L87 Difference]: Start difference. First operand 271 states and 294 transitions. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 6 states have internal predecessors, (93), 2 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) [2022-03-18 16:22:23,548 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 [] [2022-03-18 16:22:27,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:22:27,485 INFO L93 Difference]: Finished difference Result 323 states and 354 transitions. [2022-03-18 16:22:27,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:22:27,485 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 6 states have internal predecessors, (93), 2 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 127 [2022-03-18 16:22:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:22:27,486 INFO L225 Difference]: With dead ends: 323 [2022-03-18 16:22:27,486 INFO L226 Difference]: Without dead ends: 253 [2022-03-18 16:22:27,487 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-03-18 16:22:27,487 INFO L912 BasicCegarLoop]: 123 mSDtfsCounter, 237 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 156 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:22:27,487 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 487 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 899 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-03-18 16:22:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-03-18 16:22:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 233. [2022-03-18 16:22:27,518 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) [2022-03-18 16:22:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 248 transitions. [2022-03-18 16:22:27,519 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 248 transitions. Word has length 127 [2022-03-18 16:22:27,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:22:27,519 INFO L478 AbstractCegarLoop]: Abstraction has 233 states and 248 transitions. [2022-03-18 16:22:27,519 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 6 states have internal predecessors, (93), 2 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) [2022-03-18 16:22:27,519 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 248 transitions. [2022-03-18 16:22:27,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-03-18 16:22:27,520 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:22:27,520 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:22:27,520 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-18 16:22:27,520 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:22:27,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:22:27,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1600651777, now seen corresponding path program 1 times [2022-03-18 16:22:27,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:22:27,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064936756] [2022-03-18 16:22:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:27,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:22:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:27,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:22:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:27,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:22:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:27,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:22:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:27,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:22:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:27,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:27,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:22:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:27,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 16:22:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 16:22:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:28,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 16:22:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:22:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:28,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:28,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:22:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:28,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:28,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 16:22:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:28,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 16:22:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:22:28,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:22:28,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064936756] [2022-03-18 16:22:28,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064936756] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:22:28,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890879982] [2022-03-18 16:22:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:28,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:22:28,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:22:28,118 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) [2022-03-18 16:22:28,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 16:22:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:29,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 16:22:29,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:22:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:22:29,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:22:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:22:30,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890879982] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:22:30,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:22:30,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2022-03-18 16:22:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260227759] [2022-03-18 16:22:30,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:22:30,074 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 16:22:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:22:30,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 16:22:30,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:22:30,075 INFO L87 Difference]: Start difference. First operand 233 states and 248 transitions. Second operand has 20 states, 20 states have (on average 8.75) internal successors, (175), 10 states have internal predecessors, (175), 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) [2022-03-18 16:22:32,147 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 [] [2022-03-18 16:22:36,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:22:36,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:22:36,646 INFO L93 Difference]: Finished difference Result 443 states and 484 transitions. [2022-03-18 16:22:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 16:22:36,647 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.75) internal successors, (175), 10 states have internal predecessors, (175), 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 136 [2022-03-18 16:22:36,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:22:36,648 INFO L225 Difference]: With dead ends: 443 [2022-03-18 16:22:36,648 INFO L226 Difference]: Without dead ends: 259 [2022-03-18 16:22:36,648 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2022-03-18 16:22:36,648 INFO L912 BasicCegarLoop]: 122 mSDtfsCounter, 252 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 157 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:22:36,649 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 390 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 649 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-03-18 16:22:36,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-03-18 16:22:36,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 239. [2022-03-18 16:22:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 179 states have (on average 1.0837988826815643) internal successors, (194), 179 states have internal predecessors, (194), 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) [2022-03-18 16:22:36,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 254 transitions. [2022-03-18 16:22:36,690 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 254 transitions. Word has length 136 [2022-03-18 16:22:36,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:22:36,690 INFO L478 AbstractCegarLoop]: Abstraction has 239 states and 254 transitions. [2022-03-18 16:22:36,690 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.75) internal successors, (175), 10 states have internal predecessors, (175), 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) [2022-03-18 16:22:36,690 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 254 transitions. [2022-03-18 16:22:36,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-18 16:22:36,691 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:22:36,691 INFO L500 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] [2022-03-18 16:22:36,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-18 16:22:36,915 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 [2022-03-18 16:22:36,916 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:22:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:22:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash 634353361, now seen corresponding path program 1 times [2022-03-18 16:22:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:22:36,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818245852] [2022-03-18 16:22:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:36,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:22:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:22:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:22:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:22:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:22:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:22:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 16:22:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 16:22:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 16:22:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:22:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:22:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 16:22:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 16:22:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:22:37,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:22:37,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818245852] [2022-03-18 16:22:37,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818245852] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:22:37,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895942219] [2022-03-18 16:22:37,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:37,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:22:37,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:22:37,666 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) [2022-03-18 16:22:37,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 16:22:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:39,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 16:22:39,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:22:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:22:39,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:22:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-18 16:22:40,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895942219] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 16:22:40,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-18 16:22:40,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18, 9] total 23 [2022-03-18 16:22:40,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419902830] [2022-03-18 16:22:40,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:22:40,195 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 16:22:40,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:22:40,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 16:22:40,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-03-18 16:22:40,196 INFO L87 Difference]: Start difference. First operand 239 states and 254 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) [2022-03-18 16:22:40,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:22:40,261 INFO L93 Difference]: Finished difference Result 361 states and 384 transitions. [2022-03-18 16:22:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 16:22:40,283 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 139 [2022-03-18 16:22:40,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:22:40,284 INFO L225 Difference]: With dead ends: 361 [2022-03-18 16:22:40,284 INFO L226 Difference]: Without dead ends: 241 [2022-03-18 16:22:40,285 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 296 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-03-18 16:22:40,285 INFO L912 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 [2022-03-18 16:22:40,285 INFO L913 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] [2022-03-18 16:22:40,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-03-18 16:22:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-03-18 16:22:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 181 states have (on average 1.0828729281767955) internal successors, (196), 181 states have internal predecessors, (196), 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) [2022-03-18 16:22:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 256 transitions. [2022-03-18 16:22:40,329 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 256 transitions. Word has length 139 [2022-03-18 16:22:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:22:40,330 INFO L478 AbstractCegarLoop]: Abstraction has 241 states and 256 transitions. [2022-03-18 16:22:40,330 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) [2022-03-18 16:22:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 256 transitions. [2022-03-18 16:22:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-03-18 16:22:40,330 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:22:40,330 INFO L500 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] [2022-03-18 16:22:40,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 16:22:40,552 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 [2022-03-18 16:22:40,552 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:22:40,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:22:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1533865512, now seen corresponding path program 1 times [2022-03-18 16:22:40,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:22:40,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150867982] [2022-03-18 16:22:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:40,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:22:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:22:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:22:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:22:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:22:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:22:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 16:22:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 16:22:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 16:22:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:22:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-18 16:22:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:22:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 16:22:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 16:22:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 16:22:41,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:22:41,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150867982] [2022-03-18 16:22:41,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150867982] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:22:41,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522033161] [2022-03-18 16:22:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:41,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:22:41,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:22:41,524 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) [2022-03-18 16:22:41,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 16:22:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:42,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 2006 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-18 16:22:42,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:22:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-18 16:22:43,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:22:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-18 16:22:43,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522033161] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-18 16:22:43,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-18 16:22:43,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18, 5] total 22 [2022-03-18 16:22:43,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174737669] [2022-03-18 16:22:43,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:22:43,376 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 16:22:43,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:22:43,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 16:22:43,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-18 16:22:43,376 INFO L87 Difference]: Start difference. First operand 241 states and 256 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) [2022-03-18 16:22:43,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:22:43,490 INFO L93 Difference]: Finished difference Result 361 states and 382 transitions. [2022-03-18 16:22:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 16:22:43,490 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 140 [2022-03-18 16:22:43,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:22:43,491 INFO L225 Difference]: With dead ends: 361 [2022-03-18 16:22:43,491 INFO L226 Difference]: Without dead ends: 243 [2022-03-18 16:22:43,491 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-18 16:22:43,492 INFO L912 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 [2022-03-18 16:22:43,492 INFO L913 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] [2022-03-18 16:22:43,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-03-18 16:22:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2022-03-18 16:22:43,546 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) [2022-03-18 16:22:43,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 258 transitions. [2022-03-18 16:22:43,547 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 258 transitions. Word has length 140 [2022-03-18 16:22:43,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:22:43,547 INFO L478 AbstractCegarLoop]: Abstraction has 243 states and 258 transitions. [2022-03-18 16:22:43,547 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) [2022-03-18 16:22:43,547 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 258 transitions. [2022-03-18 16:22:43,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-18 16:22:43,548 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:22:43,548 INFO L500 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] [2022-03-18 16:22:43,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 16:22:43,767 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 [2022-03-18 16:22:43,768 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:22:43,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:22:43,768 INFO L85 PathProgramCache]: Analyzing trace with hash -738815569, now seen corresponding path program 1 times [2022-03-18 16:22:43,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:22:43,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291055760] [2022-03-18 16:22:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:22:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:43,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:22:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:22:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:22:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:22:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:22:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 16:22:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 16:22:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 16:22:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:22:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 16:22:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:22:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 16:22:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 16:22:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 16:22:44,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:22:44,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291055760] [2022-03-18 16:22:44,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291055760] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:22:44,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770809868] [2022-03-18 16:22:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:44,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:22:44,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:22:44,429 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) [2022-03-18 16:22:44,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 16:22:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:46,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 2008 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-18 16:22:46,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:22:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 16:22:46,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:22:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 16:22:46,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770809868] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:22:46,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:22:46,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 8, 8] total 29 [2022-03-18 16:22:46,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101947587] [2022-03-18 16:22:46,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:22:46,903 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-18 16:22:46,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:22:46,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-18 16:22:46,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2022-03-18 16:22:46,904 INFO L87 Difference]: Start difference. First operand 243 states and 258 transitions. Second operand has 29 states, 29 states have (on average 6.482758620689655) internal successors, (188), 19 states have internal predecessors, (188), 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) [2022-03-18 16:22:48,991 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 [] [2022-03-18 16:22:53,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:22:53,036 INFO L93 Difference]: Finished difference Result 453 states and 496 transitions. [2022-03-18 16:22:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 16:22:53,036 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.482758620689655) internal successors, (188), 19 states have internal predecessors, (188), 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 141 [2022-03-18 16:22:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:22:53,038 INFO L225 Difference]: With dead ends: 453 [2022-03-18 16:22:53,038 INFO L226 Difference]: Without dead ends: 265 [2022-03-18 16:22:53,039 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=440, Invalid=1630, Unknown=0, NotChecked=0, Total=2070 [2022-03-18 16:22:53,039 INFO L912 BasicCegarLoop]: 124 mSDtfsCounter, 362 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 253 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-18 16:22:53,039 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 581 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1070 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-03-18 16:22:53,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-03-18 16:22:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 255. [2022-03-18 16:22:53,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 195 states have (on average 1.0769230769230769) internal successors, (210), 195 states have internal predecessors, (210), 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) [2022-03-18 16:22:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 270 transitions. [2022-03-18 16:22:53,129 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 270 transitions. Word has length 141 [2022-03-18 16:22:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:22:53,129 INFO L478 AbstractCegarLoop]: Abstraction has 255 states and 270 transitions. [2022-03-18 16:22:53,130 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.482758620689655) internal successors, (188), 19 states have internal predecessors, (188), 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) [2022-03-18 16:22:53,130 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 270 transitions. [2022-03-18 16:22:53,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-03-18 16:22:53,130 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:22:53,130 INFO L500 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:22:53,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 16:22:53,352 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 [2022-03-18 16:22:53,352 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:22:53,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:22:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash 428421235, now seen corresponding path program 1 times [2022-03-18 16:22:53,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:22:53,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183688786] [2022-03-18 16:22:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:22:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:53,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:22:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:53,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:22:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:53,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:22:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:22:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:53,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:22:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:54,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 16:22:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:54,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 16:22:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:54,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 16:22:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:22:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:54,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 16:22:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:54,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:22:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:22:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:54,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:22:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:54,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 16:22:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 16:22:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 16:22:54,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:22:54,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183688786] [2022-03-18 16:22:54,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183688786] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:22:54,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904039886] [2022-03-18 16:22:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:22:54,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:22:54,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:22:54,390 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) [2022-03-18 16:22:54,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 16:22:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:22:56,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 2115 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-18 16:22:56,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:22:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-18 16:22:56,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:22:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-18 16:22:57,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904039886] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:22:57,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:22:57,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12, 5] total 36 [2022-03-18 16:22:57,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598081458] [2022-03-18 16:22:57,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:22:57,062 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-18 16:22:57,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:22:57,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-18 16:22:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2022-03-18 16:22:57,063 INFO L87 Difference]: Start difference. First operand 255 states and 270 transitions. Second operand has 36 states, 36 states have (on average 5.388888888888889) internal successors, (194), 26 states have internal predecessors, (194), 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) [2022-03-18 16:22:59,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:23:04,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 16:23:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:23:08,259 INFO L93 Difference]: Finished difference Result 465 states and 504 transitions. [2022-03-18 16:23:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-18 16:23:08,259 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.388888888888889) internal successors, (194), 26 states have internal predecessors, (194), 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 147 [2022-03-18 16:23:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:23:08,260 INFO L225 Difference]: With dead ends: 465 [2022-03-18 16:23:08,261 INFO L226 Difference]: Without dead ends: 273 [2022-03-18 16:23:08,262 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 307 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=483, Invalid=3299, Unknown=0, NotChecked=0, Total=3782 [2022-03-18 16:23:08,262 INFO L912 BasicCegarLoop]: 121 mSDtfsCounter, 179 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 141 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-03-18 16:23:08,262 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1021 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2339 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-03-18 16:23:08,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-03-18 16:23:08,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 263. [2022-03-18 16:23:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 203 states have (on average 1.0738916256157636) internal successors, (218), 203 states have internal predecessors, (218), 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) [2022-03-18 16:23:08,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 278 transitions. [2022-03-18 16:23:08,340 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 278 transitions. Word has length 147 [2022-03-18 16:23:08,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:23:08,341 INFO L478 AbstractCegarLoop]: Abstraction has 263 states and 278 transitions. [2022-03-18 16:23:08,341 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.388888888888889) internal successors, (194), 26 states have internal predecessors, (194), 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) [2022-03-18 16:23:08,341 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 278 transitions. [2022-03-18 16:23:08,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-18 16:23:08,341 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:23:08,342 INFO L500 BasicCegarLoop]: trace histogram [11, 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] [2022-03-18 16:23:08,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-18 16:23:08,558 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:23:08,559 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:23:08,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:23:08,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1594167132, now seen corresponding path program 2 times [2022-03-18 16:23:08,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:23:08,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108584955] [2022-03-18 16:23:08,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:23:08,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:23:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:23:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 16:23:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 16:23:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:23:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 16:23:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:23:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:23:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 16:23:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 16:23:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 16:23:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 16:23:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 16:23:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 16:23:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 16:23:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 16:23:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 16:23:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 16:23:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:23:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-18 16:23:09,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:23:09,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108584955] [2022-03-18 16:23:09,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108584955] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:23:09,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004175779] [2022-03-18 16:23:09,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 16:23:09,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:23:09,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:23:09,878 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 16:23:09,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process