/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 06:45:29,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 06:45:29,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 06:45:29,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 06:45:29,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 06:45:29,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 06:45:29,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 06:45:29,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 06:45:29,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 06:45:29,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 06:45:29,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 06:45:29,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 06:45:29,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 06:45:29,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 06:45:29,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 06:45:29,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 06:45:29,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 06:45:29,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 06:45:29,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 06:45:29,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 06:45:29,968 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 06:45:29,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 06:45:29,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 06:45:29,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 06:45:29,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 06:45:29,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-19 06:45:29,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-19 06:45:29,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-19 06:45:29,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-19 06:45:29,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-19 06:45:29,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-19 06:45:29,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 06:45:29,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 06:45:29,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 06:45:29,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-19 06:45:29,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 06:45:29,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 06:45:29,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 06:45:29,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 06:45:29,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 06:45:29,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 06:45:29,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 06:45:29,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 06:45:29,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 06:45:29,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 06:45:29,992 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 06:45:29,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 06:45:29,992 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 06:45:29,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 06:45:29,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 06:45:29,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 06:45:29,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 06:45:29,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 06:45:29,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 06:45:29,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 06:45:29,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 06:45:29,993 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 06:45:29,993 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 06:45:29,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 06:45:29,993 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-19 06:45:29,993 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 06:45:30,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 06:45:30,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 06:45:30,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 06:45:30,199 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 06:45:30,200 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 06:45:30,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2022-03-19 06:45:30,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e12b50a20/178464f5eacf454c82cc8f3e1895eeac/FLAG9053d7666 [2022-03-19 06:45:30,627 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 06:45:30,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2022-03-19 06:45:30,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e12b50a20/178464f5eacf454c82cc8f3e1895eeac/FLAG9053d7666 [2022-03-19 06:45:31,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e12b50a20/178464f5eacf454c82cc8f3e1895eeac [2022-03-19 06:45:31,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 06:45:31,038 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 06:45:31,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 06:45:31,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 06:45:31,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 06:45:31,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:45:31" (1/1) ... [2022-03-19 06:45:31,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f70020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:31, skipping insertion in model container [2022-03-19 06:45:31,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:45:31" (1/1) ... [2022-03-19 06:45:31,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 06:45:31,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 06:45:31,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c[2713,2726] [2022-03-19 06:45:31,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 06:45:31,285 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 06:45:31,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c[2713,2726] [2022-03-19 06:45:31,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 06:45:31,364 INFO L208 MainTranslator]: Completed translation [2022-03-19 06:45:31,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:31 WrapperNode [2022-03-19 06:45:31,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 06:45:31,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 06:45:31,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 06:45:31,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 06:45:31,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:31" (1/1) ... [2022-03-19 06:45:31,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:31" (1/1) ... [2022-03-19 06:45:31,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:31" (1/1) ... [2022-03-19 06:45:31,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:31" (1/1) ... [2022-03-19 06:45:31,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:31" (1/1) ... [2022-03-19 06:45:31,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:31" (1/1) ... [2022-03-19 06:45:31,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:31" (1/1) ... [2022-03-19 06:45:31,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 06:45:31,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 06:45:31,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 06:45:31,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 06:45:31,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:31" (1/1) ... [2022-03-19 06:45:31,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 06:45:31,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:45:31,462 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) [2022-03-19 06:45:31,471 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 [2022-03-19 06:45:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 06:45:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 06:45:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 06:45:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-19 06:45:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-19 06:45:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-03-19 06:45:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-03-19 06:45:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-03-19 06:45:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-03-19 06:45:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-03-19 06:45:31,501 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-03-19 06:45:31,501 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-19 06:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-19 06:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 06:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 06:45:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 06:45:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 06:45:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 06:45:31,639 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 06:45:31,641 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 06:45:31,675 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:31,706 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:45:31,706 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:45:31,712 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:31,719 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:45:31,719 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:45:31,725 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:31,851 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-19 06:45:31,851 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-19 06:45:31,853 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:31,897 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-03-19 06:45:31,897 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-03-19 06:45:31,902 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:31,927 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-19 06:45:31,927 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-19 06:45:31,969 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:31,974 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:45:31,974 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:45:31,974 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:31,978 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:45:31,978 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:45:31,979 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:31,984 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:45:31,984 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:45:32,008 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:32,029 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 06:45:32,030 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 06:45:32,055 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:32,059 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:45:32,059 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:45:32,059 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:32,068 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:45:32,068 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:45:32,068 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:45:32,071 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:45:32,071 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:45:32,081 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 06:45:32,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 06:45:32,093 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 06:45:32,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:45:32 BoogieIcfgContainer [2022-03-19 06:45:32,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 06:45:32,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 06:45:32,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 06:45:32,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 06:45:32,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 06:45:31" (1/3) ... [2022-03-19 06:45:32,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1652d0d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:45:32, skipping insertion in model container [2022-03-19 06:45:32,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:45:31" (2/3) ... [2022-03-19 06:45:32,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1652d0d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:45:32, skipping insertion in model container [2022-03-19 06:45:32,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:45:32" (3/3) ... [2022-03-19 06:45:32,103 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-1.c [2022-03-19 06:45:32,112 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 06:45:32,112 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 06:45:32,142 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 06:45:32,165 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2022-03-19 06:45:32,165 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 06:45:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 219 states have (on average 1.4246575342465753) internal successors, (312), 242 states have internal predecessors, (312), 57 states have call successors, (57), 24 states have call predecessors, (57), 24 states have return successors, (57), 51 states have call predecessors, (57), 57 states have call successors, (57) [2022-03-19 06:45:32,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-19 06:45:32,206 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:32,207 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] [2022-03-19 06:45:32,207 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:32,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:32,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1062088937, now seen corresponding path program 1 times [2022-03-19 06:45:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:32,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1766109532] [2022-03-19 06:45:32,235 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:32,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1062088937, now seen corresponding path program 2 times [2022-03-19 06:45:32,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:32,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72317403] [2022-03-19 06:45:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:32,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:32,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:32,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:32,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72317403] [2022-03-19 06:45:32,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72317403] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:32,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:32,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 06:45:32,602 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:32,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1766109532] [2022-03-19 06:45:32,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1766109532] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:32,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:32,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 06:45:32,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631972287] [2022-03-19 06:45:32,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:32,606 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 06:45:32,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 06:45:32,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-19 06:45:32,628 INFO L87 Difference]: Start difference. First operand has 302 states, 219 states have (on average 1.4246575342465753) internal successors, (312), 242 states have internal predecessors, (312), 57 states have call successors, (57), 24 states have call predecessors, (57), 24 states have return successors, (57), 51 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-19 06:45:33,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:33,531 INFO L93 Difference]: Finished difference Result 539 states and 782 transitions. [2022-03-19 06:45:33,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 06:45:33,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-03-19 06:45:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:33,541 INFO L225 Difference]: With dead ends: 539 [2022-03-19 06:45:33,541 INFO L226 Difference]: Without dead ends: 324 [2022-03-19 06:45:33,545 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-19 06:45:33,547 INFO L912 BasicCegarLoop]: 366 mSDtfsCounter, 154 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:33,547 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 575 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 06:45:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-03-19 06:45:33,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 294. [2022-03-19 06:45:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 214 states have (on average 1.3738317757009346) internal successors, (294), 235 states have internal predecessors, (294), 57 states have call successors, (57), 24 states have call predecessors, (57), 22 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-03-19 06:45:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 388 transitions. [2022-03-19 06:45:33,600 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 388 transitions. Word has length 20 [2022-03-19 06:45:33,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:33,601 INFO L478 AbstractCegarLoop]: Abstraction has 294 states and 388 transitions. [2022-03-19 06:45:33,601 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-19 06:45:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 388 transitions. [2022-03-19 06:45:33,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-19 06:45:33,602 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:33,602 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] [2022-03-19 06:45:33,602 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 06:45:33,602 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1342963223, now seen corresponding path program 1 times [2022-03-19 06:45:33,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:33,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1787953471] [2022-03-19 06:45:33,603 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1342963223, now seen corresponding path program 2 times [2022-03-19 06:45:33,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:33,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151483196] [2022-03-19 06:45:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:33,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:33,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:33,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:33,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151483196] [2022-03-19 06:45:33,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151483196] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:33,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:33,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:33,786 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:33,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1787953471] [2022-03-19 06:45:33,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1787953471] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:33,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:33,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:33,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605773878] [2022-03-19 06:45:33,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:33,787 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:45:33,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:33,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:45:33,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:45:33,788 INFO L87 Difference]: Start difference. First operand 294 states and 388 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:34,690 INFO L93 Difference]: Finished difference Result 643 states and 865 transitions. [2022-03-19 06:45:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:45:34,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-03-19 06:45:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:34,694 INFO L225 Difference]: With dead ends: 643 [2022-03-19 06:45:34,694 INFO L226 Difference]: Without dead ends: 480 [2022-03-19 06:45:34,695 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:34,696 INFO L912 BasicCegarLoop]: 510 mSDtfsCounter, 552 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:34,696 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 753 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 06:45:34,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-03-19 06:45:34,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 431. [2022-03-19 06:45:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 329 states have (on average 1.3161094224924013) internal successors, (433), 336 states have internal predecessors, (433), 66 states have call successors, (66), 37 states have call predecessors, (66), 35 states have return successors, (74), 59 states have call predecessors, (74), 54 states have call successors, (74) [2022-03-19 06:45:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 573 transitions. [2022-03-19 06:45:34,734 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 573 transitions. Word has length 28 [2022-03-19 06:45:34,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:34,734 INFO L478 AbstractCegarLoop]: Abstraction has 431 states and 573 transitions. [2022-03-19 06:45:34,734 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:34,735 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 573 transitions. [2022-03-19 06:45:34,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-19 06:45:34,735 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:34,735 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] [2022-03-19 06:45:34,735 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 06:45:34,735 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:34,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2077310213, now seen corresponding path program 1 times [2022-03-19 06:45:34,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:34,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [627074193] [2022-03-19 06:45:34,736 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:34,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2077310213, now seen corresponding path program 2 times [2022-03-19 06:45:34,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:34,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726348817] [2022-03-19 06:45:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:34,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:34,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:34,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:34,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:34,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726348817] [2022-03-19 06:45:34,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726348817] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:34,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:34,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:34,890 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:34,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [627074193] [2022-03-19 06:45:34,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [627074193] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:34,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:34,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:34,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858621281] [2022-03-19 06:45:34,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:34,891 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:45:34,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:34,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:45:34,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:45:34,891 INFO L87 Difference]: Start difference. First operand 431 states and 573 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:35,906 INFO L93 Difference]: Finished difference Result 949 states and 1266 transitions. [2022-03-19 06:45:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:45:35,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-03-19 06:45:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:35,919 INFO L225 Difference]: With dead ends: 949 [2022-03-19 06:45:35,919 INFO L226 Difference]: Without dead ends: 679 [2022-03-19 06:45:35,920 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:35,922 INFO L912 BasicCegarLoop]: 352 mSDtfsCounter, 475 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:35,927 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 568 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-19 06:45:35,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-03-19 06:45:35,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 634. [2022-03-19 06:45:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 494 states have (on average 1.3157894736842106) internal successors, (650), 499 states have internal predecessors, (650), 86 states have call successors, (86), 55 states have call predecessors, (86), 53 states have return successors, (112), 81 states have call predecessors, (112), 76 states have call successors, (112) [2022-03-19 06:45:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 848 transitions. [2022-03-19 06:45:35,993 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 848 transitions. Word has length 30 [2022-03-19 06:45:35,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:35,993 INFO L478 AbstractCegarLoop]: Abstraction has 634 states and 848 transitions. [2022-03-19 06:45:35,993 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:35,993 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 848 transitions. [2022-03-19 06:45:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-19 06:45:35,994 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:35,994 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] [2022-03-19 06:45:35,994 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 06:45:35,994 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:35,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:35,995 INFO L85 PathProgramCache]: Analyzing trace with hash 219422801, now seen corresponding path program 1 times [2022-03-19 06:45:35,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:35,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1525570476] [2022-03-19 06:45:35,995 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:35,995 INFO L85 PathProgramCache]: Analyzing trace with hash 219422801, now seen corresponding path program 2 times [2022-03-19 06:45:35,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:35,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044864505] [2022-03-19 06:45:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:35,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:36,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:36,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:36,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:36,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:36,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044864505] [2022-03-19 06:45:36,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044864505] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:36,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:36,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:36,108 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:36,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1525570476] [2022-03-19 06:45:36,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1525570476] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:36,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:36,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:36,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357877086] [2022-03-19 06:45:36,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:36,108 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:45:36,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:36,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:45:36,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:45:36,109 INFO L87 Difference]: Start difference. First operand 634 states and 848 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:37,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:37,065 INFO L93 Difference]: Finished difference Result 743 states and 986 transitions. [2022-03-19 06:45:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:45:37,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-03-19 06:45:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:37,069 INFO L225 Difference]: With dead ends: 743 [2022-03-19 06:45:37,069 INFO L226 Difference]: Without dead ends: 723 [2022-03-19 06:45:37,070 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:37,071 INFO L912 BasicCegarLoop]: 328 mSDtfsCounter, 474 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:37,071 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 451 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 06:45:37,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-03-19 06:45:37,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2022-03-19 06:45:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 532 states have (on average 1.3195488721804511) internal successors, (702), 543 states have internal predecessors, (702), 87 states have call successors, (87), 57 states have call predecessors, (87), 58 states have return successors, (117), 80 states have call predecessors, (117), 78 states have call successors, (117) [2022-03-19 06:45:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 906 transitions. [2022-03-19 06:45:37,128 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 906 transitions. Word has length 34 [2022-03-19 06:45:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:37,128 INFO L478 AbstractCegarLoop]: Abstraction has 678 states and 906 transitions. [2022-03-19 06:45:37,128 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 906 transitions. [2022-03-19 06:45:37,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-19 06:45:37,130 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:37,130 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] [2022-03-19 06:45:37,130 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 06:45:37,131 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:37,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:37,131 INFO L85 PathProgramCache]: Analyzing trace with hash -465049067, now seen corresponding path program 1 times [2022-03-19 06:45:37,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:37,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [154088144] [2022-03-19 06:45:37,132 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash -465049067, now seen corresponding path program 2 times [2022-03-19 06:45:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:37,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056485923] [2022-03-19 06:45:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:37,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:37,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:37,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:37,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-19 06:45:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:37,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:37,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056485923] [2022-03-19 06:45:37,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056485923] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:37,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:37,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:45:37,286 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:37,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [154088144] [2022-03-19 06:45:37,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [154088144] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:37,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:37,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:45:37,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753028636] [2022-03-19 06:45:37,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:37,287 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:45:37,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:37,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:45:37,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:45:37,288 INFO L87 Difference]: Start difference. First operand 678 states and 906 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 06:45:38,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:38,196 INFO L93 Difference]: Finished difference Result 771 states and 1021 transitions. [2022-03-19 06:45:38,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 06:45:38,196 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-03-19 06:45:38,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:38,199 INFO L225 Difference]: With dead ends: 771 [2022-03-19 06:45:38,199 INFO L226 Difference]: Without dead ends: 704 [2022-03-19 06:45:38,200 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:38,200 INFO L912 BasicCegarLoop]: 324 mSDtfsCounter, 384 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:38,200 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 751 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 06:45:38,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-03-19 06:45:38,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 682. [2022-03-19 06:45:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 535 states have (on average 1.3177570093457944) internal successors, (705), 546 states have internal predecessors, (705), 87 states have call successors, (87), 57 states have call predecessors, (87), 59 states have return successors, (118), 81 states have call predecessors, (118), 78 states have call successors, (118) [2022-03-19 06:45:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 910 transitions. [2022-03-19 06:45:38,258 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 910 transitions. Word has length 41 [2022-03-19 06:45:38,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:38,258 INFO L478 AbstractCegarLoop]: Abstraction has 682 states and 910 transitions. [2022-03-19 06:45:38,258 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 06:45:38,258 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 910 transitions. [2022-03-19 06:45:38,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-19 06:45:38,259 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:38,259 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] [2022-03-19 06:45:38,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 06:45:38,259 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:38,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:38,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1071240601, now seen corresponding path program 1 times [2022-03-19 06:45:38,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:38,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [180201773] [2022-03-19 06:45:38,260 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:38,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1071240601, now seen corresponding path program 2 times [2022-03-19 06:45:38,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:38,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637404391] [2022-03-19 06:45:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:38,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:38,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:38,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:38,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637404391] [2022-03-19 06:45:38,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637404391] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:38,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:38,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:38,386 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:38,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [180201773] [2022-03-19 06:45:38,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [180201773] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:38,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:38,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 06:45:38,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631304387] [2022-03-19 06:45:38,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:38,386 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 06:45:38,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:38,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 06:45:38,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 06:45:38,387 INFO L87 Difference]: Start difference. First operand 682 states and 910 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:39,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:39,265 INFO L93 Difference]: Finished difference Result 709 states and 944 transitions. [2022-03-19 06:45:39,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 06:45:39,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-03-19 06:45:39,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:39,269 INFO L225 Difference]: With dead ends: 709 [2022-03-19 06:45:39,269 INFO L226 Difference]: Without dead ends: 706 [2022-03-19 06:45:39,270 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-19 06:45:39,271 INFO L912 BasicCegarLoop]: 345 mSDtfsCounter, 167 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:39,271 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 579 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 06:45:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-19 06:45:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 693. [2022-03-19 06:45:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 546 states have (on average 1.3168498168498168) internal successors, (719), 556 states have internal predecessors, (719), 87 states have call successors, (87), 58 states have call predecessors, (87), 59 states have return successors, (118), 81 states have call predecessors, (118), 78 states have call successors, (118) [2022-03-19 06:45:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 924 transitions. [2022-03-19 06:45:39,321 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 924 transitions. Word has length 40 [2022-03-19 06:45:39,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:39,321 INFO L478 AbstractCegarLoop]: Abstraction has 693 states and 924 transitions. [2022-03-19 06:45:39,321 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 06:45:39,321 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 924 transitions. [2022-03-19 06:45:39,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-19 06:45:39,322 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:39,323 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] [2022-03-19 06:45:39,323 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 06:45:39,323 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:39,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:39,323 INFO L85 PathProgramCache]: Analyzing trace with hash -852493695, now seen corresponding path program 1 times [2022-03-19 06:45:39,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:39,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1790368729] [2022-03-19 06:45:39,324 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash -852493695, now seen corresponding path program 2 times [2022-03-19 06:45:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:39,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690759285] [2022-03-19 06:45:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:39,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:39,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:39,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:39,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:45:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:39,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:39,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690759285] [2022-03-19 06:45:39,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690759285] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:39,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:39,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:39,516 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:39,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1790368729] [2022-03-19 06:45:39,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1790368729] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:39,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:39,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:39,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29539788] [2022-03-19 06:45:39,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:39,517 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:45:39,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:39,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:45:39,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:39,518 INFO L87 Difference]: Start difference. First operand 693 states and 924 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:40,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:40,133 INFO L93 Difference]: Finished difference Result 768 states and 1018 transitions. [2022-03-19 06:45:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 06:45:40,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2022-03-19 06:45:40,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:40,136 INFO L225 Difference]: With dead ends: 768 [2022-03-19 06:45:40,136 INFO L226 Difference]: Without dead ends: 763 [2022-03-19 06:45:40,137 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:45:40,137 INFO L912 BasicCegarLoop]: 333 mSDtfsCounter, 425 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:40,137 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 673 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:45:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-19 06:45:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2022-03-19 06:45:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 579 states have (on average 1.31433506044905) internal successors, (761), 592 states have internal predecessors, (761), 87 states have call successors, (87), 58 states have call predecessors, (87), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2022-03-19 06:45:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 972 transitions. [2022-03-19 06:45:40,183 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 972 transitions. Word has length 41 [2022-03-19 06:45:40,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:40,183 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 972 transitions. [2022-03-19 06:45:40,183 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:40,184 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 972 transitions. [2022-03-19 06:45:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-19 06:45:40,184 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:40,184 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] [2022-03-19 06:45:40,184 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 06:45:40,185 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:40,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:40,185 INFO L85 PathProgramCache]: Analyzing trace with hash -204665957, now seen corresponding path program 1 times [2022-03-19 06:45:40,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:40,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [765922978] [2022-03-19 06:45:40,185 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:40,185 INFO L85 PathProgramCache]: Analyzing trace with hash -204665957, now seen corresponding path program 2 times [2022-03-19 06:45:40,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:40,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631351238] [2022-03-19 06:45:40,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:40,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:40,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:40,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:40,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:40,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:40,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:45:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:40,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:40,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631351238] [2022-03-19 06:45:40,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631351238] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:40,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:40,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:40,422 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:40,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [765922978] [2022-03-19 06:45:40,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [765922978] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:40,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:40,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:40,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637971494] [2022-03-19 06:45:40,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:40,422 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:40,424 INFO L87 Difference]: Start difference. First operand 732 states and 972 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:41,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:41,498 INFO L93 Difference]: Finished difference Result 772 states and 1020 transitions. [2022-03-19 06:45:41,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:45:41,498 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-03-19 06:45:41,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:41,501 INFO L225 Difference]: With dead ends: 772 [2022-03-19 06:45:41,501 INFO L226 Difference]: Without dead ends: 763 [2022-03-19 06:45:41,501 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-03-19 06:45:41,502 INFO L912 BasicCegarLoop]: 316 mSDtfsCounter, 765 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:41,502 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 839 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:45:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-19 06:45:41,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2022-03-19 06:45:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 579 states have (on average 1.310880829015544) internal successors, (759), 592 states have internal predecessors, (759), 87 states have call successors, (87), 58 states have call predecessors, (87), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2022-03-19 06:45:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 970 transitions. [2022-03-19 06:45:41,563 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 970 transitions. Word has length 42 [2022-03-19 06:45:41,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:41,563 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 970 transitions. [2022-03-19 06:45:41,563 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 970 transitions. [2022-03-19 06:45:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-19 06:45:41,564 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:41,564 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] [2022-03-19 06:45:41,564 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 06:45:41,564 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:41,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:41,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1356271149, now seen corresponding path program 1 times [2022-03-19 06:45:41,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:41,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1413362376] [2022-03-19 06:45:41,565 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:41,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1356271149, now seen corresponding path program 2 times [2022-03-19 06:45:41,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:41,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040032897] [2022-03-19 06:45:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:41,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:41,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:41,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:41,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:41,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:45:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:41,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:41,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040032897] [2022-03-19 06:45:41,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040032897] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:41,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:41,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:41,798 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:41,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1413362376] [2022-03-19 06:45:41,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1413362376] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:41,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:41,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:41,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529406296] [2022-03-19 06:45:41,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:41,799 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:41,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:41,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:41,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:41,800 INFO L87 Difference]: Start difference. First operand 732 states and 970 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:42,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:42,797 INFO L93 Difference]: Finished difference Result 772 states and 1018 transitions. [2022-03-19 06:45:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:45:42,797 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2022-03-19 06:45:42,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:42,800 INFO L225 Difference]: With dead ends: 772 [2022-03-19 06:45:42,800 INFO L226 Difference]: Without dead ends: 763 [2022-03-19 06:45:42,801 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-03-19 06:45:42,801 INFO L912 BasicCegarLoop]: 317 mSDtfsCounter, 884 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:42,801 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 733 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:45:42,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-19 06:45:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2022-03-19 06:45:42,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 579 states have (on average 1.307426597582038) internal successors, (757), 592 states have internal predecessors, (757), 87 states have call successors, (87), 58 states have call predecessors, (87), 65 states have return successors, (124), 83 states have call predecessors, (124), 78 states have call successors, (124) [2022-03-19 06:45:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 968 transitions. [2022-03-19 06:45:42,857 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 968 transitions. Word has length 43 [2022-03-19 06:45:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:42,857 INFO L478 AbstractCegarLoop]: Abstraction has 732 states and 968 transitions. [2022-03-19 06:45:42,858 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:42,858 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 968 transitions. [2022-03-19 06:45:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-19 06:45:42,858 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:42,858 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] [2022-03-19 06:45:42,859 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 06:45:42,859 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:42,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:42,859 INFO L85 PathProgramCache]: Analyzing trace with hash -80599750, now seen corresponding path program 1 times [2022-03-19 06:45:42,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:42,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1669811536] [2022-03-19 06:45:42,859 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:42,860 INFO L85 PathProgramCache]: Analyzing trace with hash -80599750, now seen corresponding path program 2 times [2022-03-19 06:45:42,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:42,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943538059] [2022-03-19 06:45:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:42,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:42,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:42,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:42,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:42,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-19 06:45:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:42,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:42,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943538059] [2022-03-19 06:45:42,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943538059] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:42,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:42,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 06:45:42,969 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:42,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1669811536] [2022-03-19 06:45:42,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1669811536] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:42,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:42,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 06:45:42,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509413701] [2022-03-19 06:45:42,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:42,969 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 06:45:42,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:42,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 06:45:42,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-19 06:45:42,970 INFO L87 Difference]: Start difference. First operand 732 states and 968 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 06:45:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:44,003 INFO L93 Difference]: Finished difference Result 1109 states and 1486 transitions. [2022-03-19 06:45:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 06:45:44,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-03-19 06:45:44,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:44,008 INFO L225 Difference]: With dead ends: 1109 [2022-03-19 06:45:44,008 INFO L226 Difference]: Without dead ends: 1106 [2022-03-19 06:45:44,008 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:44,009 INFO L912 BasicCegarLoop]: 440 mSDtfsCounter, 520 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:44,009 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 663 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 06:45:44,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-03-19 06:45:44,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 845. [2022-03-19 06:45:44,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 670 states have (on average 1.3149253731343284) internal successors, (881), 685 states have internal predecessors, (881), 97 states have call successors, (97), 68 states have call predecessors, (97), 77 states have return successors, (144), 93 states have call predecessors, (144), 88 states have call successors, (144) [2022-03-19 06:45:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1122 transitions. [2022-03-19 06:45:44,083 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1122 transitions. Word has length 44 [2022-03-19 06:45:44,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:44,084 INFO L478 AbstractCegarLoop]: Abstraction has 845 states and 1122 transitions. [2022-03-19 06:45:44,084 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-19 06:45:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1122 transitions. [2022-03-19 06:45:44,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-19 06:45:44,084 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:44,084 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] [2022-03-19 06:45:44,085 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 06:45:44,085 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:44,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:44,085 INFO L85 PathProgramCache]: Analyzing trace with hash -850118780, now seen corresponding path program 1 times [2022-03-19 06:45:44,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:44,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1659941665] [2022-03-19 06:45:44,085 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:44,085 INFO L85 PathProgramCache]: Analyzing trace with hash -850118780, now seen corresponding path program 2 times [2022-03-19 06:45:44,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:44,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341784893] [2022-03-19 06:45:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:44,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:44,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:44,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:44,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:44,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 06:45:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:44,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:44,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:44,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341784893] [2022-03-19 06:45:44,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341784893] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:44,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:44,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:44,235 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:44,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1659941665] [2022-03-19 06:45:44,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1659941665] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:44,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:44,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:44,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923402543] [2022-03-19 06:45:44,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:44,236 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 06:45:44,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:44,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 06:45:44,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:44,236 INFO L87 Difference]: Start difference. First operand 845 states and 1122 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:45,026 INFO L93 Difference]: Finished difference Result 888 states and 1173 transitions. [2022-03-19 06:45:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 06:45:45,026 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2022-03-19 06:45:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:45,030 INFO L225 Difference]: With dead ends: 888 [2022-03-19 06:45:45,030 INFO L226 Difference]: Without dead ends: 870 [2022-03-19 06:45:45,031 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:45,031 INFO L912 BasicCegarLoop]: 343 mSDtfsCounter, 340 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:45,031 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1090 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:45:45,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-03-19 06:45:45,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 843. [2022-03-19 06:45:45,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 669 states have (on average 1.3139013452914798) internal successors, (879), 684 states have internal predecessors, (879), 96 states have call successors, (96), 68 states have call predecessors, (96), 77 states have return successors, (143), 92 states have call predecessors, (143), 87 states have call successors, (143) [2022-03-19 06:45:45,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1118 transitions. [2022-03-19 06:45:45,110 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1118 transitions. Word has length 44 [2022-03-19 06:45:45,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:45,110 INFO L478 AbstractCegarLoop]: Abstraction has 843 states and 1118 transitions. [2022-03-19 06:45:45,110 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:45,110 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1118 transitions. [2022-03-19 06:45:45,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-19 06:45:45,111 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:45,111 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] [2022-03-19 06:45:45,111 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 06:45:45,111 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:45,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1558546133, now seen corresponding path program 1 times [2022-03-19 06:45:45,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:45,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [770459355] [2022-03-19 06:45:45,112 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:45,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1558546133, now seen corresponding path program 2 times [2022-03-19 06:45:45,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:45,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136803159] [2022-03-19 06:45:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:45,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:45,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:45,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:45,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:45,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-19 06:45:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:45,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:45,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136803159] [2022-03-19 06:45:45,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136803159] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:45,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:45,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:45,315 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:45,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [770459355] [2022-03-19 06:45:45,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [770459355] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:45,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:45,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:45,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218713562] [2022-03-19 06:45:45,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:45,316 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 06:45:45,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:45,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 06:45:45,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:45,317 INFO L87 Difference]: Start difference. First operand 843 states and 1118 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-19 06:45:46,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:46,966 INFO L93 Difference]: Finished difference Result 1459 states and 1911 transitions. [2022-03-19 06:45:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:45:46,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2022-03-19 06:45:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:46,970 INFO L225 Difference]: With dead ends: 1459 [2022-03-19 06:45:46,970 INFO L226 Difference]: Without dead ends: 897 [2022-03-19 06:45:46,971 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-03-19 06:45:46,972 INFO L912 BasicCegarLoop]: 456 mSDtfsCounter, 1120 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:46,972 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 715 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-19 06:45:46,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-03-19 06:45:47,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 834. [2022-03-19 06:45:47,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 660 states have (on average 1.3) internal successors, (858), 675 states have internal predecessors, (858), 96 states have call successors, (96), 68 states have call predecessors, (96), 77 states have return successors, (143), 92 states have call predecessors, (143), 87 states have call successors, (143) [2022-03-19 06:45:47,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1097 transitions. [2022-03-19 06:45:47,079 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1097 transitions. Word has length 45 [2022-03-19 06:45:47,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:47,079 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1097 transitions. [2022-03-19 06:45:47,080 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-19 06:45:47,080 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1097 transitions. [2022-03-19 06:45:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-19 06:45:47,080 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:47,080 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] [2022-03-19 06:45:47,081 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-19 06:45:47,081 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:47,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:47,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1805363402, now seen corresponding path program 1 times [2022-03-19 06:45:47,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:47,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [636487075] [2022-03-19 06:45:47,081 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:47,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1805363402, now seen corresponding path program 2 times [2022-03-19 06:45:47,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:47,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76487156] [2022-03-19 06:45:47,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:47,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:47,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:47,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:47,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:45:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:47,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:47,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76487156] [2022-03-19 06:45:47,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76487156] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:47,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:47,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:47,224 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:47,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [636487075] [2022-03-19 06:45:47,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [636487075] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:47,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:47,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:47,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408551109] [2022-03-19 06:45:47,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:47,224 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:45:47,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:47,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:45:47,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:47,225 INFO L87 Difference]: Start difference. First operand 834 states and 1097 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-19 06:45:47,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:47,972 INFO L93 Difference]: Finished difference Result 933 states and 1198 transitions. [2022-03-19 06:45:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 06:45:47,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2022-03-19 06:45:47,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:47,974 INFO L225 Difference]: With dead ends: 933 [2022-03-19 06:45:47,975 INFO L226 Difference]: Without dead ends: 594 [2022-03-19 06:45:47,976 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:45:47,976 INFO L912 BasicCegarLoop]: 383 mSDtfsCounter, 688 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:47,976 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 755 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:45:47,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-03-19 06:45:48,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 542. [2022-03-19 06:45:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.2773892773892774) internal successors, (548), 441 states have internal predecessors, (548), 63 states have call successors, (63), 43 states have call predecessors, (63), 49 states have return successors, (75), 59 states have call predecessors, (75), 54 states have call successors, (75) [2022-03-19 06:45:48,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 686 transitions. [2022-03-19 06:45:48,049 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 686 transitions. Word has length 49 [2022-03-19 06:45:48,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:48,049 INFO L478 AbstractCegarLoop]: Abstraction has 542 states and 686 transitions. [2022-03-19 06:45:48,049 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-19 06:45:48,049 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 686 transitions. [2022-03-19 06:45:48,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 06:45:48,050 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:48,050 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] [2022-03-19 06:45:48,050 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-19 06:45:48,050 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:48,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash -108540602, now seen corresponding path program 1 times [2022-03-19 06:45:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:48,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1331107668] [2022-03-19 06:45:48,051 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash -108540602, now seen corresponding path program 2 times [2022-03-19 06:45:48,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:48,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699282243] [2022-03-19 06:45:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 06:45:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-19 06:45:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:48,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:48,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699282243] [2022-03-19 06:45:48,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699282243] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:48,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:48,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:48,173 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:48,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1331107668] [2022-03-19 06:45:48,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1331107668] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:48,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:48,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:48,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706788422] [2022-03-19 06:45:48,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:48,173 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:45:48,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:48,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:45:48,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:48,174 INFO L87 Difference]: Start difference. First operand 542 states and 686 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:45:48,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:48,756 INFO L93 Difference]: Finished difference Result 848 states and 1081 transitions. [2022-03-19 06:45:48,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:45:48,756 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-19 06:45:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:48,758 INFO L225 Difference]: With dead ends: 848 [2022-03-19 06:45:48,759 INFO L226 Difference]: Without dead ends: 583 [2022-03-19 06:45:48,759 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:48,760 INFO L912 BasicCegarLoop]: 336 mSDtfsCounter, 568 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:48,760 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 724 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 06:45:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-03-19 06:45:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 556. [2022-03-19 06:45:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 442 states have (on average 1.2782805429864252) internal successors, (565), 454 states have internal predecessors, (565), 63 states have call successors, (63), 43 states have call predecessors, (63), 50 states have return successors, (78), 59 states have call predecessors, (78), 54 states have call successors, (78) [2022-03-19 06:45:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 706 transitions. [2022-03-19 06:45:48,820 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 706 transitions. Word has length 55 [2022-03-19 06:45:48,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:48,820 INFO L478 AbstractCegarLoop]: Abstraction has 556 states and 706 transitions. [2022-03-19 06:45:48,820 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:45:48,821 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 706 transitions. [2022-03-19 06:45:48,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-19 06:45:48,821 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:48,821 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] [2022-03-19 06:45:48,821 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-19 06:45:48,822 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash -461236819, now seen corresponding path program 1 times [2022-03-19 06:45:48,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:48,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1218132882] [2022-03-19 06:45:48,822 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash -461236819, now seen corresponding path program 2 times [2022-03-19 06:45:48,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:48,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059520869] [2022-03-19 06:45:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:48,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:45:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:48,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:48,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059520869] [2022-03-19 06:45:48,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059520869] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:48,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:48,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:48,977 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:48,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1218132882] [2022-03-19 06:45:48,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1218132882] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:48,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:48,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:48,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990564178] [2022-03-19 06:45:48,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:48,978 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:48,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:48,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:48,978 INFO L87 Difference]: Start difference. First operand 556 states and 706 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 06:45:50,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:50,313 INFO L93 Difference]: Finished difference Result 803 states and 1022 transitions. [2022-03-19 06:45:50,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 06:45:50,314 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2022-03-19 06:45:50,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:50,316 INFO L225 Difference]: With dead ends: 803 [2022-03-19 06:45:50,316 INFO L226 Difference]: Without dead ends: 728 [2022-03-19 06:45:50,317 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2022-03-19 06:45:50,317 INFO L912 BasicCegarLoop]: 436 mSDtfsCounter, 867 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:50,317 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 1222 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-19 06:45:50,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-03-19 06:45:50,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 585. [2022-03-19 06:45:50,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 465 states have (on average 1.270967741935484) internal successors, (591), 478 states have internal predecessors, (591), 65 states have call successors, (65), 44 states have call predecessors, (65), 54 states have return successors, (83), 63 states have call predecessors, (83), 56 states have call successors, (83) [2022-03-19 06:45:50,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 739 transitions. [2022-03-19 06:45:50,406 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 739 transitions. Word has length 52 [2022-03-19 06:45:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:50,406 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 739 transitions. [2022-03-19 06:45:50,406 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 06:45:50,406 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 739 transitions. [2022-03-19 06:45:50,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-19 06:45:50,407 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:50,407 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] [2022-03-19 06:45:50,407 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-19 06:45:50,408 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash -26084622, now seen corresponding path program 1 times [2022-03-19 06:45:50,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:50,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [159337392] [2022-03-19 06:45:50,408 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash -26084622, now seen corresponding path program 2 times [2022-03-19 06:45:50,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:50,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103060138] [2022-03-19 06:45:50,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:50,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:50,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:50,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:45:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:50,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:50,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103060138] [2022-03-19 06:45:50,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103060138] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:50,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:50,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:50,540 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:50,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [159337392] [2022-03-19 06:45:50,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [159337392] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:50,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:50,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:45:50,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342759817] [2022-03-19 06:45:50,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:50,540 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:45:50,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:50,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:45:50,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:45:50,541 INFO L87 Difference]: Start difference. First operand 585 states and 739 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:51,261 INFO L93 Difference]: Finished difference Result 772 states and 979 transitions. [2022-03-19 06:45:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 06:45:51,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-03-19 06:45:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:51,264 INFO L225 Difference]: With dead ends: 772 [2022-03-19 06:45:51,264 INFO L226 Difference]: Without dead ends: 753 [2022-03-19 06:45:51,264 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:45:51,264 INFO L912 BasicCegarLoop]: 423 mSDtfsCounter, 507 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:51,265 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 803 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:51,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-03-19 06:45:51,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 660. [2022-03-19 06:45:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 529 states have (on average 1.2665406427221173) internal successors, (670), 538 states have internal predecessors, (670), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (98), 75 states have call predecessors, (98), 59 states have call successors, (98) [2022-03-19 06:45:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 836 transitions. [2022-03-19 06:45:51,369 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 836 transitions. Word has length 54 [2022-03-19 06:45:51,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:51,370 INFO L478 AbstractCegarLoop]: Abstraction has 660 states and 836 transitions. [2022-03-19 06:45:51,370 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 836 transitions. [2022-03-19 06:45:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-19 06:45:51,371 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:51,371 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] [2022-03-19 06:45:51,371 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-19 06:45:51,371 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:51,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1418983922, now seen corresponding path program 1 times [2022-03-19 06:45:51,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:51,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2097859915] [2022-03-19 06:45:51,372 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:51,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1418983922, now seen corresponding path program 2 times [2022-03-19 06:45:51,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:51,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093828971] [2022-03-19 06:45:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:51,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:45:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:51,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:51,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093828971] [2022-03-19 06:45:51,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093828971] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:51,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:51,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:51,514 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:51,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2097859915] [2022-03-19 06:45:51,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2097859915] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:51,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:51,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:51,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710989053] [2022-03-19 06:45:51,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:51,515 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 06:45:51,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 06:45:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:51,516 INFO L87 Difference]: Start difference. First operand 660 states and 836 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:52,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:52,466 INFO L93 Difference]: Finished difference Result 1126 states and 1459 transitions. [2022-03-19 06:45:52,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 06:45:52,467 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2022-03-19 06:45:52,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:52,469 INFO L225 Difference]: With dead ends: 1126 [2022-03-19 06:45:52,469 INFO L226 Difference]: Without dead ends: 730 [2022-03-19 06:45:52,470 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-03-19 06:45:52,471 INFO L912 BasicCegarLoop]: 320 mSDtfsCounter, 555 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:52,471 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 698 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:45:52,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-03-19 06:45:52,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 672. [2022-03-19 06:45:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 541 states have (on average 1.2698706099815158) internal successors, (687), 550 states have internal predecessors, (687), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (98), 75 states have call predecessors, (98), 59 states have call successors, (98) [2022-03-19 06:45:52,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 853 transitions. [2022-03-19 06:45:52,570 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 853 transitions. Word has length 54 [2022-03-19 06:45:52,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:52,570 INFO L478 AbstractCegarLoop]: Abstraction has 672 states and 853 transitions. [2022-03-19 06:45:52,570 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 853 transitions. [2022-03-19 06:45:52,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-19 06:45:52,571 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:52,571 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] [2022-03-19 06:45:52,571 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-19 06:45:52,571 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:52,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:52,571 INFO L85 PathProgramCache]: Analyzing trace with hash -169363980, now seen corresponding path program 1 times [2022-03-19 06:45:52,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:52,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1512502887] [2022-03-19 06:45:52,572 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:52,572 INFO L85 PathProgramCache]: Analyzing trace with hash -169363980, now seen corresponding path program 2 times [2022-03-19 06:45:52,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:52,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277938305] [2022-03-19 06:45:52,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:52,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:45:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:52,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:52,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277938305] [2022-03-19 06:45:52,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277938305] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:52,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:52,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:52,763 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:52,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1512502887] [2022-03-19 06:45:52,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1512502887] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:52,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:52,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:52,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542670863] [2022-03-19 06:45:52,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:52,763 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:45:52,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:52,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:45:52,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:45:52,764 INFO L87 Difference]: Start difference. First operand 672 states and 853 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 06:45:53,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:53,717 INFO L93 Difference]: Finished difference Result 723 states and 913 transitions. [2022-03-19 06:45:53,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 06:45:53,717 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2022-03-19 06:45:53,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:53,719 INFO L225 Difference]: With dead ends: 723 [2022-03-19 06:45:53,719 INFO L226 Difference]: Without dead ends: 633 [2022-03-19 06:45:53,720 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-03-19 06:45:53,720 INFO L912 BasicCegarLoop]: 325 mSDtfsCounter, 868 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:53,720 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 876 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:45:53,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-03-19 06:45:53,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 592. [2022-03-19 06:45:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 472 states have (on average 1.2648305084745763) internal successors, (597), 485 states have internal predecessors, (597), 65 states have call successors, (65), 45 states have call predecessors, (65), 54 states have return successors, (85), 62 states have call predecessors, (85), 57 states have call successors, (85) [2022-03-19 06:45:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 747 transitions. [2022-03-19 06:45:53,815 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 747 transitions. Word has length 54 [2022-03-19 06:45:53,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:53,815 INFO L478 AbstractCegarLoop]: Abstraction has 592 states and 747 transitions. [2022-03-19 06:45:53,815 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 06:45:53,815 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 747 transitions. [2022-03-19 06:45:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-19 06:45:53,816 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:53,816 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] [2022-03-19 06:45:53,816 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-19 06:45:53,816 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:53,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:53,817 INFO L85 PathProgramCache]: Analyzing trace with hash 481879247, now seen corresponding path program 1 times [2022-03-19 06:45:53,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:53,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1190688261] [2022-03-19 06:45:53,817 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:53,817 INFO L85 PathProgramCache]: Analyzing trace with hash 481879247, now seen corresponding path program 2 times [2022-03-19 06:45:53,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:53,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247369892] [2022-03-19 06:45:53,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:53,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 06:45:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:45:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:45:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:53,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:54,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247369892] [2022-03-19 06:45:54,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247369892] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:54,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:54,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:54,000 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:54,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1190688261] [2022-03-19 06:45:54,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1190688261] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:54,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:54,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:54,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871292820] [2022-03-19 06:45:54,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:54,000 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 06:45:54,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:54,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 06:45:54,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:54,001 INFO L87 Difference]: Start difference. First operand 592 states and 747 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:45:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:54,822 INFO L93 Difference]: Finished difference Result 889 states and 1132 transitions. [2022-03-19 06:45:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 06:45:54,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2022-03-19 06:45:54,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:54,824 INFO L225 Difference]: With dead ends: 889 [2022-03-19 06:45:54,824 INFO L226 Difference]: Without dead ends: 556 [2022-03-19 06:45:54,825 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:54,826 INFO L912 BasicCegarLoop]: 338 mSDtfsCounter, 288 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:54,826 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1157 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:45:54,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-03-19 06:45:54,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 518. [2022-03-19 06:45:54,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 409 states have (on average 1.2469437652811737) internal successors, (510), 418 states have internal predecessors, (510), 61 states have call successors, (61), 43 states have call predecessors, (61), 47 states have return successors, (70), 57 states have call predecessors, (70), 54 states have call successors, (70) [2022-03-19 06:45:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 641 transitions. [2022-03-19 06:45:54,905 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 641 transitions. Word has length 61 [2022-03-19 06:45:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:54,906 INFO L478 AbstractCegarLoop]: Abstraction has 518 states and 641 transitions. [2022-03-19 06:45:54,906 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:45:54,906 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 641 transitions. [2022-03-19 06:45:54,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 06:45:54,908 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:54,908 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] [2022-03-19 06:45:54,908 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-19 06:45:54,908 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:54,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:54,909 INFO L85 PathProgramCache]: Analyzing trace with hash -355788470, now seen corresponding path program 1 times [2022-03-19 06:45:54,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:54,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1009784200] [2022-03-19 06:45:54,909 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:54,910 INFO L85 PathProgramCache]: Analyzing trace with hash -355788470, now seen corresponding path program 2 times [2022-03-19 06:45:54,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:54,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077058532] [2022-03-19 06:45:54,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:54,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:54,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:54,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:55,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:55,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:45:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:55,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:55,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:55,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077058532] [2022-03-19 06:45:55,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077058532] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:55,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:55,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:55,086 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:55,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1009784200] [2022-03-19 06:45:55,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1009784200] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:55,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:55,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:55,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625875389] [2022-03-19 06:45:55,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:55,087 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:45:55,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:55,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:45:55,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:45:55,088 INFO L87 Difference]: Start difference. First operand 518 states and 641 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:56,038 INFO L93 Difference]: Finished difference Result 583 states and 725 transitions. [2022-03-19 06:45:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:45:56,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-03-19 06:45:56,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:56,040 INFO L225 Difference]: With dead ends: 583 [2022-03-19 06:45:56,040 INFO L226 Difference]: Without dead ends: 579 [2022-03-19 06:45:56,041 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:45:56,041 INFO L912 BasicCegarLoop]: 339 mSDtfsCounter, 332 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:56,041 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 1637 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 06:45:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-03-19 06:45:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 535. [2022-03-19 06:45:56,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 424 states have (on average 1.2382075471698113) internal successors, (525), 433 states have internal predecessors, (525), 61 states have call successors, (61), 43 states have call predecessors, (61), 49 states have return successors, (77), 59 states have call predecessors, (77), 54 states have call successors, (77) [2022-03-19 06:45:56,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 663 transitions. [2022-03-19 06:45:56,131 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 663 transitions. Word has length 55 [2022-03-19 06:45:56,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:56,132 INFO L478 AbstractCegarLoop]: Abstraction has 535 states and 663 transitions. [2022-03-19 06:45:56,132 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:56,132 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 663 transitions. [2022-03-19 06:45:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 06:45:56,132 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:56,133 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] [2022-03-19 06:45:56,133 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-19 06:45:56,133 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:56,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:56,133 INFO L85 PathProgramCache]: Analyzing trace with hash -355511640, now seen corresponding path program 1 times [2022-03-19 06:45:56,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:56,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1462741026] [2022-03-19 06:45:56,133 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:56,133 INFO L85 PathProgramCache]: Analyzing trace with hash -355511640, now seen corresponding path program 2 times [2022-03-19 06:45:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:56,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937028557] [2022-03-19 06:45:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:45:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:56,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:56,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937028557] [2022-03-19 06:45:56,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937028557] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:56,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:56,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:56,325 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:56,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1462741026] [2022-03-19 06:45:56,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1462741026] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:56,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:56,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:45:56,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26269595] [2022-03-19 06:45:56,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:56,326 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:45:56,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:56,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:45:56,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:45:56,326 INFO L87 Difference]: Start difference. First operand 535 states and 663 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:57,246 INFO L93 Difference]: Finished difference Result 578 states and 713 transitions. [2022-03-19 06:45:57,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:45:57,247 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-03-19 06:45:57,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:57,249 INFO L225 Difference]: With dead ends: 578 [2022-03-19 06:45:57,249 INFO L226 Difference]: Without dead ends: 563 [2022-03-19 06:45:57,249 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:45:57,249 INFO L912 BasicCegarLoop]: 343 mSDtfsCounter, 318 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:57,250 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 1501 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 06:45:57,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-03-19 06:45:57,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 532. [2022-03-19 06:45:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 421 states have (on average 1.2399049881235154) internal successors, (522), 431 states have internal predecessors, (522), 61 states have call successors, (61), 43 states have call predecessors, (61), 49 states have return successors, (76), 58 states have call predecessors, (76), 54 states have call successors, (76) [2022-03-19 06:45:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 659 transitions. [2022-03-19 06:45:57,326 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 659 transitions. Word has length 55 [2022-03-19 06:45:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:57,327 INFO L478 AbstractCegarLoop]: Abstraction has 532 states and 659 transitions. [2022-03-19 06:45:57,327 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:45:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 659 transitions. [2022-03-19 06:45:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-19 06:45:57,328 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:57,328 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] [2022-03-19 06:45:57,328 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-19 06:45:57,328 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:57,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:57,328 INFO L85 PathProgramCache]: Analyzing trace with hash 476341908, now seen corresponding path program 1 times [2022-03-19 06:45:57,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:57,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1087345896] [2022-03-19 06:45:57,329 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:57,329 INFO L85 PathProgramCache]: Analyzing trace with hash 476341908, now seen corresponding path program 2 times [2022-03-19 06:45:57,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:57,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334375999] [2022-03-19 06:45:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:57,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-19 06:45:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:45:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:57,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:57,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334375999] [2022-03-19 06:45:57,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334375999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:57,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:57,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:57,468 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:57,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1087345896] [2022-03-19 06:45:57,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1087345896] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:57,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:57,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:45:57,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643051211] [2022-03-19 06:45:57,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:57,468 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:45:57,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:57,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:45:57,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:45:57,469 INFO L87 Difference]: Start difference. First operand 532 states and 659 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 06:45:58,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:58,551 INFO L93 Difference]: Finished difference Result 580 states and 714 transitions. [2022-03-19 06:45:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 06:45:58,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2022-03-19 06:45:58,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:58,556 INFO L225 Difference]: With dead ends: 580 [2022-03-19 06:45:58,556 INFO L226 Difference]: Without dead ends: 552 [2022-03-19 06:45:58,556 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:45:58,556 INFO L912 BasicCegarLoop]: 321 mSDtfsCounter, 296 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:58,557 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 846 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-19 06:45:58,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-03-19 06:45:58,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 523. [2022-03-19 06:45:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 415 states have (on average 1.236144578313253) internal successors, (513), 424 states have internal predecessors, (513), 60 states have call successors, (60), 42 states have call predecessors, (60), 47 states have return successors, (74), 57 states have call predecessors, (74), 53 states have call successors, (74) [2022-03-19 06:45:58,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 647 transitions. [2022-03-19 06:45:58,638 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 647 transitions. Word has length 57 [2022-03-19 06:45:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:58,638 INFO L478 AbstractCegarLoop]: Abstraction has 523 states and 647 transitions. [2022-03-19 06:45:58,638 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 06:45:58,639 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 647 transitions. [2022-03-19 06:45:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 06:45:58,639 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:58,639 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] [2022-03-19 06:45:58,640 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-19 06:45:58,640 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:58,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1259461336, now seen corresponding path program 1 times [2022-03-19 06:45:58,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:58,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1970858916] [2022-03-19 06:45:58,640 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:58,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1259461336, now seen corresponding path program 2 times [2022-03-19 06:45:58,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:58,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870698649] [2022-03-19 06:45:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:58,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:45:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:45:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:45:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:45:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 06:45:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:45:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:45:58,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:45:58,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870698649] [2022-03-19 06:45:58,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870698649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:58,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:58,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:58,797 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:45:58,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1970858916] [2022-03-19 06:45:58,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1970858916] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:45:58,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:45:58,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 06:45:58,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214273561] [2022-03-19 06:45:58,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:45:58,797 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 06:45:58,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:58,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 06:45:58,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-03-19 06:45:58,798 INFO L87 Difference]: Start difference. First operand 523 states and 647 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:45:59,883 INFO L93 Difference]: Finished difference Result 560 states and 689 transitions. [2022-03-19 06:45:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:45:59,888 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), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2022-03-19 06:45:59,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:45:59,889 INFO L225 Difference]: With dead ends: 560 [2022-03-19 06:45:59,889 INFO L226 Difference]: Without dead ends: 542 [2022-03-19 06:45:59,890 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-03-19 06:45:59,890 INFO L912 BasicCegarLoop]: 333 mSDtfsCounter, 710 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:45:59,890 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 787 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:45:59,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-03-19 06:45:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 505. [2022-03-19 06:45:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 400 states have (on average 1.24) internal successors, (496), 408 states have internal predecessors, (496), 59 states have call successors, (59), 42 states have call predecessors, (59), 45 states have return successors, (67), 55 states have call predecessors, (67), 52 states have call successors, (67) [2022-03-19 06:45:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 622 transitions. [2022-03-19 06:45:59,967 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 622 transitions. Word has length 56 [2022-03-19 06:45:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:45:59,967 INFO L478 AbstractCegarLoop]: Abstraction has 505 states and 622 transitions. [2022-03-19 06:45:59,968 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), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:45:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 622 transitions. [2022-03-19 06:45:59,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-19 06:45:59,968 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:45:59,968 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] [2022-03-19 06:45:59,969 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-19 06:45:59,969 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:45:59,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:45:59,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1146260298, now seen corresponding path program 1 times [2022-03-19 06:45:59,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:45:59,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [517149809] [2022-03-19 06:45:59,969 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:45:59,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1146260298, now seen corresponding path program 2 times [2022-03-19 06:45:59,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:45:59,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621252601] [2022-03-19 06:45:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:45:59,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:45:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 06:46:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:46:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 06:46:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:00,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:00,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621252601] [2022-03-19 06:46:00,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621252601] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:00,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:00,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:46:00,110 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:00,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [517149809] [2022-03-19 06:46:00,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [517149809] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:00,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:00,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:46:00,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680502042] [2022-03-19 06:46:00,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:00,111 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:46:00,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:00,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:46:00,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:46:00,111 INFO L87 Difference]: Start difference. First operand 505 states and 622 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:46:01,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:01,050 INFO L93 Difference]: Finished difference Result 797 states and 994 transitions. [2022-03-19 06:46:01,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 06:46:01,050 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-03-19 06:46:01,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:01,052 INFO L225 Difference]: With dead ends: 797 [2022-03-19 06:46:01,053 INFO L226 Difference]: Without dead ends: 538 [2022-03-19 06:46:01,053 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-03-19 06:46:01,054 INFO L912 BasicCegarLoop]: 314 mSDtfsCounter, 605 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:01,054 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 908 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:46:01,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-03-19 06:46:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 505. [2022-03-19 06:46:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 400 states have (on average 1.235) internal successors, (494), 408 states have internal predecessors, (494), 59 states have call successors, (59), 42 states have call predecessors, (59), 45 states have return successors, (67), 55 states have call predecessors, (67), 52 states have call successors, (67) [2022-03-19 06:46:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 620 transitions. [2022-03-19 06:46:01,134 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 620 transitions. Word has length 65 [2022-03-19 06:46:01,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:01,134 INFO L478 AbstractCegarLoop]: Abstraction has 505 states and 620 transitions. [2022-03-19 06:46:01,134 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:46:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 620 transitions. [2022-03-19 06:46:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-19 06:46:01,135 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:01,135 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] [2022-03-19 06:46:01,135 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-19 06:46:01,135 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:01,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:01,136 INFO L85 PathProgramCache]: Analyzing trace with hash -702728848, now seen corresponding path program 1 times [2022-03-19 06:46:01,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:01,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1398499086] [2022-03-19 06:46:01,136 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:01,136 INFO L85 PathProgramCache]: Analyzing trace with hash -702728848, now seen corresponding path program 2 times [2022-03-19 06:46:01,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:01,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551420186] [2022-03-19 06:46:01,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:01,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-19 06:46:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:01,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:01,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551420186] [2022-03-19 06:46:01,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551420186] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:01,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:01,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:46:01,290 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:01,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1398499086] [2022-03-19 06:46:01,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1398499086] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:01,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:01,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:46:01,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266833175] [2022-03-19 06:46:01,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:01,291 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:46:01,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:01,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:46:01,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:46:01,291 INFO L87 Difference]: Start difference. First operand 505 states and 620 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 06:46:02,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:02,064 INFO L93 Difference]: Finished difference Result 555 states and 678 transitions. [2022-03-19 06:46:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:46:02,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-03-19 06:46:02,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:02,066 INFO L225 Difference]: With dead ends: 555 [2022-03-19 06:46:02,066 INFO L226 Difference]: Without dead ends: 534 [2022-03-19 06:46:02,067 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:46:02,070 INFO L912 BasicCegarLoop]: 326 mSDtfsCounter, 440 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:02,070 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 605 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:46:02,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-03-19 06:46:02,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 504. [2022-03-19 06:46:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 399 states have (on average 1.2230576441102756) internal successors, (488), 407 states have internal predecessors, (488), 59 states have call successors, (59), 42 states have call predecessors, (59), 45 states have return successors, (67), 55 states have call predecessors, (67), 52 states have call successors, (67) [2022-03-19 06:46:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 614 transitions. [2022-03-19 06:46:02,150 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 614 transitions. Word has length 59 [2022-03-19 06:46:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:02,151 INFO L478 AbstractCegarLoop]: Abstraction has 504 states and 614 transitions. [2022-03-19 06:46:02,151 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 06:46:02,151 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 614 transitions. [2022-03-19 06:46:02,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-19 06:46:02,151 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:02,152 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] [2022-03-19 06:46:02,152 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-19 06:46:02,152 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:02,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:02,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1957884754, now seen corresponding path program 1 times [2022-03-19 06:46:02,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:02,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [805793088] [2022-03-19 06:46:02,152 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:02,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1957884754, now seen corresponding path program 2 times [2022-03-19 06:46:02,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:02,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629749335] [2022-03-19 06:46:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:02,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-19 06:46:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:02,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:02,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629749335] [2022-03-19 06:46:02,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629749335] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:02,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:02,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:46:02,322 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:02,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [805793088] [2022-03-19 06:46:02,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [805793088] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:02,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:02,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:46:02,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373808144] [2022-03-19 06:46:02,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:02,322 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:46:02,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:02,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:46:02,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:46:02,323 INFO L87 Difference]: Start difference. First operand 504 states and 614 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 06:46:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:03,424 INFO L93 Difference]: Finished difference Result 1241 states and 1496 transitions. [2022-03-19 06:46:03,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 06:46:03,424 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-03-19 06:46:03,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:03,427 INFO L225 Difference]: With dead ends: 1241 [2022-03-19 06:46:03,427 INFO L226 Difference]: Without dead ends: 758 [2022-03-19 06:46:03,437 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-03-19 06:46:03,438 INFO L912 BasicCegarLoop]: 339 mSDtfsCounter, 1360 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:03,438 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1373 Valid, 619 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:46:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-03-19 06:46:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 616. [2022-03-19 06:46:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 493 states have (on average 1.208924949290061) internal successors, (596), 501 states have internal predecessors, (596), 67 states have call successors, (67), 50 states have call predecessors, (67), 55 states have return successors, (77), 65 states have call predecessors, (77), 60 states have call successors, (77) [2022-03-19 06:46:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 740 transitions. [2022-03-19 06:46:03,547 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 740 transitions. Word has length 61 [2022-03-19 06:46:03,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:03,548 INFO L478 AbstractCegarLoop]: Abstraction has 616 states and 740 transitions. [2022-03-19 06:46:03,548 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 06:46:03,548 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 740 transitions. [2022-03-19 06:46:03,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-19 06:46:03,549 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:03,549 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] [2022-03-19 06:46:03,549 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-19 06:46:03,549 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:03,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:03,550 INFO L85 PathProgramCache]: Analyzing trace with hash -342937836, now seen corresponding path program 1 times [2022-03-19 06:46:03,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:03,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [689538777] [2022-03-19 06:46:03,551 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash -342937836, now seen corresponding path program 2 times [2022-03-19 06:46:03,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:03,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006287373] [2022-03-19 06:46:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:03,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:03,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:03,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:03,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:03,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:03,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-19 06:46:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:03,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:03,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:03,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006287373] [2022-03-19 06:46:03,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006287373] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:03,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:03,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:46:03,696 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:03,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [689538777] [2022-03-19 06:46:03,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [689538777] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:03,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:03,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:46:03,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834861082] [2022-03-19 06:46:03,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:03,697 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:46:03,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:03,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:46:03,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:46:03,698 INFO L87 Difference]: Start difference. First operand 616 states and 740 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 06:46:04,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:04,774 INFO L93 Difference]: Finished difference Result 673 states and 807 transitions. [2022-03-19 06:46:04,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:46:04,774 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-03-19 06:46:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:04,776 INFO L225 Difference]: With dead ends: 673 [2022-03-19 06:46:04,776 INFO L226 Difference]: Without dead ends: 641 [2022-03-19 06:46:04,777 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:46:04,777 INFO L912 BasicCegarLoop]: 317 mSDtfsCounter, 243 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:04,777 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 785 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-19 06:46:04,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-03-19 06:46:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 589. [2022-03-19 06:46:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 471 states have (on average 1.2123142250530785) internal successors, (571), 479 states have internal predecessors, (571), 65 states have call successors, (65), 48 states have call predecessors, (65), 52 states have return successors, (74), 62 states have call predecessors, (74), 58 states have call successors, (74) [2022-03-19 06:46:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 710 transitions. [2022-03-19 06:46:04,888 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 710 transitions. Word has length 61 [2022-03-19 06:46:04,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:04,889 INFO L478 AbstractCegarLoop]: Abstraction has 589 states and 710 transitions. [2022-03-19 06:46:04,889 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 06:46:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 710 transitions. [2022-03-19 06:46:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 06:46:04,889 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:04,890 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] [2022-03-19 06:46:04,890 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-19 06:46:04,890 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:04,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:04,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2067524378, now seen corresponding path program 1 times [2022-03-19 06:46:04,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:04,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1623769138] [2022-03-19 06:46:04,890 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:04,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2067524378, now seen corresponding path program 2 times [2022-03-19 06:46:04,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:04,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735116456] [2022-03-19 06:46:04,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:04,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:04,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:05,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:05,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735116456] [2022-03-19 06:46:05,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735116456] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:05,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:05,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:46:05,047 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:05,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1623769138] [2022-03-19 06:46:05,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1623769138] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:05,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:05,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:46:05,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868056826] [2022-03-19 06:46:05,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:05,048 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 06:46:05,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 06:46:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:46:05,048 INFO L87 Difference]: Start difference. First operand 589 states and 710 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:46:06,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:06,060 INFO L93 Difference]: Finished difference Result 653 states and 784 transitions. [2022-03-19 06:46:06,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:46:06,061 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2022-03-19 06:46:06,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:06,063 INFO L225 Difference]: With dead ends: 653 [2022-03-19 06:46:06,063 INFO L226 Difference]: Without dead ends: 632 [2022-03-19 06:46:06,063 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:46:06,064 INFO L912 BasicCegarLoop]: 326 mSDtfsCounter, 232 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:06,064 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1580 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2071 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 06:46:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-03-19 06:46:06,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 585. [2022-03-19 06:46:06,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 468 states have (on average 1.2115384615384615) internal successors, (567), 476 states have internal predecessors, (567), 64 states have call successors, (64), 48 states have call predecessors, (64), 52 states have return successors, (73), 61 states have call predecessors, (73), 57 states have call successors, (73) [2022-03-19 06:46:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 704 transitions. [2022-03-19 06:46:06,201 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 704 transitions. Word has length 60 [2022-03-19 06:46:06,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:06,201 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 704 transitions. [2022-03-19 06:46:06,201 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:46:06,201 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 704 transitions. [2022-03-19 06:46:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-19 06:46:06,202 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:06,202 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] [2022-03-19 06:46:06,202 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-19 06:46:06,202 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:06,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:06,203 INFO L85 PathProgramCache]: Analyzing trace with hash -404247293, now seen corresponding path program 1 times [2022-03-19 06:46:06,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:06,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2097418578] [2022-03-19 06:46:06,203 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:06,203 INFO L85 PathProgramCache]: Analyzing trace with hash -404247293, now seen corresponding path program 2 times [2022-03-19 06:46:06,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:06,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864651068] [2022-03-19 06:46:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:06,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 06:46:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:46:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 06:46:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:06,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:06,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864651068] [2022-03-19 06:46:06,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864651068] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:06,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:06,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:46:06,360 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:06,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2097418578] [2022-03-19 06:46:06,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2097418578] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:06,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:06,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:46:06,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621079046] [2022-03-19 06:46:06,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:06,361 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:46:06,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:06,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:46:06,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:46:06,362 INFO L87 Difference]: Start difference. First operand 585 states and 704 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 06:46:07,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:07,168 INFO L93 Difference]: Finished difference Result 895 states and 1087 transitions. [2022-03-19 06:46:07,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 06:46:07,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2022-03-19 06:46:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:07,179 INFO L225 Difference]: With dead ends: 895 [2022-03-19 06:46:07,179 INFO L226 Difference]: Without dead ends: 669 [2022-03-19 06:46:07,180 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:46:07,180 INFO L912 BasicCegarLoop]: 328 mSDtfsCounter, 337 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:07,181 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 1259 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:46:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-03-19 06:46:07,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 585. [2022-03-19 06:46:07,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 468 states have (on average 1.2072649572649572) internal successors, (565), 476 states have internal predecessors, (565), 64 states have call successors, (64), 48 states have call predecessors, (64), 52 states have return successors, (73), 61 states have call predecessors, (73), 57 states have call successors, (73) [2022-03-19 06:46:07,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 702 transitions. [2022-03-19 06:46:07,319 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 702 transitions. Word has length 68 [2022-03-19 06:46:07,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:07,319 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 702 transitions. [2022-03-19 06:46:07,319 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 06:46:07,319 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 702 transitions. [2022-03-19 06:46:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-19 06:46:07,320 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:07,320 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] [2022-03-19 06:46:07,320 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-19 06:46:07,320 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1830326818, now seen corresponding path program 1 times [2022-03-19 06:46:07,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:07,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [17084001] [2022-03-19 06:46:07,321 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1830326818, now seen corresponding path program 2 times [2022-03-19 06:46:07,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:07,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396842089] [2022-03-19 06:46:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 06:46:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:07,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:07,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396842089] [2022-03-19 06:46:07,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396842089] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:07,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:07,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:46:07,513 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:07,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [17084001] [2022-03-19 06:46:07,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [17084001] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:07,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:07,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:46:07,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471077531] [2022-03-19 06:46:07,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:07,513 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 06:46:07,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:07,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 06:46:07,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:46:07,514 INFO L87 Difference]: Start difference. First operand 585 states and 702 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:46:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:08,445 INFO L93 Difference]: Finished difference Result 649 states and 776 transitions. [2022-03-19 06:46:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:46:08,446 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2022-03-19 06:46:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:08,448 INFO L225 Difference]: With dead ends: 649 [2022-03-19 06:46:08,448 INFO L226 Difference]: Without dead ends: 627 [2022-03-19 06:46:08,448 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:46:08,449 INFO L912 BasicCegarLoop]: 321 mSDtfsCounter, 438 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:08,449 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 1540 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:46:08,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-03-19 06:46:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 580. [2022-03-19 06:46:08,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 464 states have (on average 1.206896551724138) internal successors, (560), 472 states have internal predecessors, (560), 63 states have call successors, (63), 48 states have call predecessors, (63), 52 states have return successors, (72), 60 states have call predecessors, (72), 56 states have call successors, (72) [2022-03-19 06:46:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 695 transitions. [2022-03-19 06:46:08,572 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 695 transitions. Word has length 61 [2022-03-19 06:46:08,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:08,572 INFO L478 AbstractCegarLoop]: Abstraction has 580 states and 695 transitions. [2022-03-19 06:46:08,572 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:46:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 695 transitions. [2022-03-19 06:46:08,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-19 06:46:08,573 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:08,573 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] [2022-03-19 06:46:08,573 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-19 06:46:08,573 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:08,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:08,573 INFO L85 PathProgramCache]: Analyzing trace with hash 900215348, now seen corresponding path program 1 times [2022-03-19 06:46:08,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:08,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1856514124] [2022-03-19 06:46:08,574 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:08,574 INFO L85 PathProgramCache]: Analyzing trace with hash 900215348, now seen corresponding path program 2 times [2022-03-19 06:46:08,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:08,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144707227] [2022-03-19 06:46:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:08,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 06:46:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:08,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:08,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:08,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144707227] [2022-03-19 06:46:08,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144707227] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:08,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:08,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:46:08,730 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:08,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1856514124] [2022-03-19 06:46:08,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1856514124] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:08,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:08,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:46:08,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23777076] [2022-03-19 06:46:08,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:08,731 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 06:46:08,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:08,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 06:46:08,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:46:08,732 INFO L87 Difference]: Start difference. First operand 580 states and 695 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:46:09,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:09,592 INFO L93 Difference]: Finished difference Result 644 states and 769 transitions. [2022-03-19 06:46:09,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:46:09,592 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 61 [2022-03-19 06:46:09,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:09,594 INFO L225 Difference]: With dead ends: 644 [2022-03-19 06:46:09,594 INFO L226 Difference]: Without dead ends: 623 [2022-03-19 06:46:09,594 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:46:09,594 INFO L912 BasicCegarLoop]: 315 mSDtfsCounter, 353 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:09,595 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1510 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:46:09,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-03-19 06:46:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 576. [2022-03-19 06:46:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 461 states have (on average 1.2060737527114966) internal successors, (556), 469 states have internal predecessors, (556), 62 states have call successors, (62), 48 states have call predecessors, (62), 52 states have return successors, (71), 59 states have call predecessors, (71), 55 states have call successors, (71) [2022-03-19 06:46:09,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 689 transitions. [2022-03-19 06:46:09,707 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 689 transitions. Word has length 61 [2022-03-19 06:46:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:09,708 INFO L478 AbstractCegarLoop]: Abstraction has 576 states and 689 transitions. [2022-03-19 06:46:09,708 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:46:09,708 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 689 transitions. [2022-03-19 06:46:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-19 06:46:09,710 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:09,710 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] [2022-03-19 06:46:09,710 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-19 06:46:09,710 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:09,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:09,711 INFO L85 PathProgramCache]: Analyzing trace with hash 810140441, now seen corresponding path program 1 times [2022-03-19 06:46:09,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:09,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1533346059] [2022-03-19 06:46:09,711 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:09,711 INFO L85 PathProgramCache]: Analyzing trace with hash 810140441, now seen corresponding path program 2 times [2022-03-19 06:46:09,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:09,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928229512] [2022-03-19 06:46:09,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:09,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 06:46:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:46:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 06:46:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:09,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:09,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:09,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928229512] [2022-03-19 06:46:09,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928229512] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:09,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:09,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:46:09,857 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:09,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1533346059] [2022-03-19 06:46:09,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1533346059] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:09,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:09,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:46:09,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671864183] [2022-03-19 06:46:09,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:09,859 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:46:09,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:09,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:46:09,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:46:09,859 INFO L87 Difference]: Start difference. First operand 576 states and 689 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:46:10,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:10,673 INFO L93 Difference]: Finished difference Result 1020 states and 1238 transitions. [2022-03-19 06:46:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 06:46:10,673 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-03-19 06:46:10,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:10,675 INFO L225 Difference]: With dead ends: 1020 [2022-03-19 06:46:10,675 INFO L226 Difference]: Without dead ends: 767 [2022-03-19 06:46:10,676 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:46:10,676 INFO L912 BasicCegarLoop]: 367 mSDtfsCounter, 464 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:10,676 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 887 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:46:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-03-19 06:46:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 697. [2022-03-19 06:46:10,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 554 states have (on average 1.2021660649819494) internal successors, (666), 564 states have internal predecessors, (666), 75 states have call successors, (75), 58 states have call predecessors, (75), 67 states have return successors, (96), 75 states have call predecessors, (96), 69 states have call successors, (96) [2022-03-19 06:46:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 837 transitions. [2022-03-19 06:46:10,810 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 837 transitions. Word has length 70 [2022-03-19 06:46:10,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:10,810 INFO L478 AbstractCegarLoop]: Abstraction has 697 states and 837 transitions. [2022-03-19 06:46:10,810 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:46:10,810 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 837 transitions. [2022-03-19 06:46:10,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-19 06:46:10,811 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:10,811 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] [2022-03-19 06:46:10,811 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-19 06:46:10,811 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:10,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:10,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1259626467, now seen corresponding path program 1 times [2022-03-19 06:46:10,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:10,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [870495497] [2022-03-19 06:46:10,812 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:10,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1259626467, now seen corresponding path program 2 times [2022-03-19 06:46:10,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:10,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351000099] [2022-03-19 06:46:10,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:10,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-19 06:46:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:10,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:10,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351000099] [2022-03-19 06:46:10,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351000099] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:10,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:10,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:46:10,986 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:10,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [870495497] [2022-03-19 06:46:10,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [870495497] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:10,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:10,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:46:10,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708649743] [2022-03-19 06:46:10,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:10,987 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 06:46:10,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:10,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 06:46:10,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:46:10,987 INFO L87 Difference]: Start difference. First operand 697 states and 837 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:46:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:11,856 INFO L93 Difference]: Finished difference Result 761 states and 912 transitions. [2022-03-19 06:46:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 06:46:11,856 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), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2022-03-19 06:46:11,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:11,858 INFO L225 Difference]: With dead ends: 761 [2022-03-19 06:46:11,858 INFO L226 Difference]: Without dead ends: 718 [2022-03-19 06:46:11,859 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:46:11,859 INFO L912 BasicCegarLoop]: 307 mSDtfsCounter, 384 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:11,859 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 1419 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 06:46:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-03-19 06:46:11,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 671. [2022-03-19 06:46:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 533 states have (on average 1.200750469043152) internal successors, (640), 543 states have internal predecessors, (640), 72 states have call successors, (72), 56 states have call predecessors, (72), 65 states have return successors, (93), 72 states have call predecessors, (93), 66 states have call successors, (93) [2022-03-19 06:46:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 805 transitions. [2022-03-19 06:46:11,988 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 805 transitions. Word has length 65 [2022-03-19 06:46:11,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:11,988 INFO L478 AbstractCegarLoop]: Abstraction has 671 states and 805 transitions. [2022-03-19 06:46:11,989 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), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 06:46:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 805 transitions. [2022-03-19 06:46:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-19 06:46:11,989 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:11,990 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] [2022-03-19 06:46:11,990 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-19 06:46:11,990 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:11,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:11,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2061698465, now seen corresponding path program 1 times [2022-03-19 06:46:11,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:11,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1060078233] [2022-03-19 06:46:11,990 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:11,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2061698465, now seen corresponding path program 2 times [2022-03-19 06:46:11,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:11,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743878962] [2022-03-19 06:46:11,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:11,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 06:46:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:46:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 06:46:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-19 06:46:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:12,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:12,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743878962] [2022-03-19 06:46:12,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743878962] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:12,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:12,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:46:12,133 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:12,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1060078233] [2022-03-19 06:46:12,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1060078233] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:12,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:12,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:46:12,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971079587] [2022-03-19 06:46:12,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:12,133 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:46:12,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:12,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:46:12,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:46:12,134 INFO L87 Difference]: Start difference. First operand 671 states and 805 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:46:12,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:12,965 INFO L93 Difference]: Finished difference Result 1023 states and 1237 transitions. [2022-03-19 06:46:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 06:46:12,965 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2022-03-19 06:46:12,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:12,967 INFO L225 Difference]: With dead ends: 1023 [2022-03-19 06:46:12,967 INFO L226 Difference]: Without dead ends: 706 [2022-03-19 06:46:12,968 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:46:12,968 INFO L912 BasicCegarLoop]: 402 mSDtfsCounter, 458 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:12,969 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 1129 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 06:46:12,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-19 06:46:13,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 653. [2022-03-19 06:46:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 519 states have (on average 1.2003853564547207) internal successors, (623), 528 states have internal predecessors, (623), 70 states have call successors, (70), 56 states have call predecessors, (70), 63 states have return successors, (82), 69 states have call predecessors, (82), 64 states have call successors, (82) [2022-03-19 06:46:13,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 775 transitions. [2022-03-19 06:46:13,111 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 775 transitions. Word has length 79 [2022-03-19 06:46:13,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:13,111 INFO L478 AbstractCegarLoop]: Abstraction has 653 states and 775 transitions. [2022-03-19 06:46:13,111 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:46:13,111 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 775 transitions. [2022-03-19 06:46:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-19 06:46:13,118 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:13,118 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] [2022-03-19 06:46:13,118 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-19 06:46:13,118 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:13,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:13,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1335445745, now seen corresponding path program 1 times [2022-03-19 06:46:13,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:13,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1926151403] [2022-03-19 06:46:13,119 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:13,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1335445745, now seen corresponding path program 2 times [2022-03-19 06:46:13,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:13,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338951764] [2022-03-19 06:46:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:13,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:46:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:46:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 06:46:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-19 06:46:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:13,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:13,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338951764] [2022-03-19 06:46:13,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338951764] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:13,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:13,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:46:13,340 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:13,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1926151403] [2022-03-19 06:46:13,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1926151403] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:13,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:13,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:46:13,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026985967] [2022-03-19 06:46:13,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:13,341 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 06:46:13,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 06:46:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-03-19 06:46:13,342 INFO L87 Difference]: Start difference. First operand 653 states and 775 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 06:46:14,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:14,309 INFO L93 Difference]: Finished difference Result 1058 states and 1297 transitions. [2022-03-19 06:46:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 06:46:14,309 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2022-03-19 06:46:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:14,311 INFO L225 Difference]: With dead ends: 1058 [2022-03-19 06:46:14,311 INFO L226 Difference]: Without dead ends: 804 [2022-03-19 06:46:14,312 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-03-19 06:46:14,312 INFO L912 BasicCegarLoop]: 353 mSDtfsCounter, 470 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:14,313 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 1477 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:46:14,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-03-19 06:46:14,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 617. [2022-03-19 06:46:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 495 states have (on average 1.2) internal successors, (594), 502 states have internal predecessors, (594), 63 states have call successors, (63), 50 states have call predecessors, (63), 58 states have return successors, (72), 65 states have call predecessors, (72), 58 states have call successors, (72) [2022-03-19 06:46:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 729 transitions. [2022-03-19 06:46:14,448 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 729 transitions. Word has length 80 [2022-03-19 06:46:14,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:14,448 INFO L478 AbstractCegarLoop]: Abstraction has 617 states and 729 transitions. [2022-03-19 06:46:14,448 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 06:46:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 729 transitions. [2022-03-19 06:46:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-19 06:46:14,449 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:14,449 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] [2022-03-19 06:46:14,449 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-19 06:46:14,449 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:14,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:14,449 INFO L85 PathProgramCache]: Analyzing trace with hash 510679092, now seen corresponding path program 1 times [2022-03-19 06:46:14,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:14,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1844780220] [2022-03-19 06:46:14,450 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:14,450 INFO L85 PathProgramCache]: Analyzing trace with hash 510679092, now seen corresponding path program 2 times [2022-03-19 06:46:14,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:14,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408070308] [2022-03-19 06:46:14,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:14,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 06:46:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:46:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 06:46:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-19 06:46:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:14,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:14,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408070308] [2022-03-19 06:46:14,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408070308] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:14,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:14,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 06:46:14,659 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:14,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1844780220] [2022-03-19 06:46:14,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1844780220] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:14,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:14,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 06:46:14,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427474646] [2022-03-19 06:46:14,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:14,659 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 06:46:14,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:14,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 06:46:14,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:46:14,660 INFO L87 Difference]: Start difference. First operand 617 states and 729 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 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) [2022-03-19 06:46:15,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:15,609 INFO L93 Difference]: Finished difference Result 727 states and 856 transitions. [2022-03-19 06:46:15,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 06:46:15,610 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 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 85 [2022-03-19 06:46:15,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:15,612 INFO L225 Difference]: With dead ends: 727 [2022-03-19 06:46:15,612 INFO L226 Difference]: Without dead ends: 706 [2022-03-19 06:46:15,612 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-03-19 06:46:15,612 INFO L912 BasicCegarLoop]: 302 mSDtfsCounter, 456 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:15,613 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1666 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:46:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-19 06:46:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 625. [2022-03-19 06:46:15,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 502 states have (on average 1.197211155378486) internal successors, (601), 509 states have internal predecessors, (601), 63 states have call successors, (63), 50 states have call predecessors, (63), 59 states have return successors, (75), 66 states have call predecessors, (75), 58 states have call successors, (75) [2022-03-19 06:46:15,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 739 transitions. [2022-03-19 06:46:15,743 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 739 transitions. Word has length 85 [2022-03-19 06:46:15,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:15,743 INFO L478 AbstractCegarLoop]: Abstraction has 625 states and 739 transitions. [2022-03-19 06:46:15,743 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 7 states have internal predecessors, (65), 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) [2022-03-19 06:46:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 739 transitions. [2022-03-19 06:46:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-19 06:46:15,744 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:15,744 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] [2022-03-19 06:46:15,745 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-19 06:46:15,745 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:15,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:15,745 INFO L85 PathProgramCache]: Analyzing trace with hash 297903782, now seen corresponding path program 1 times [2022-03-19 06:46:15,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:15,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [585418523] [2022-03-19 06:46:15,745 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:15,745 INFO L85 PathProgramCache]: Analyzing trace with hash 297903782, now seen corresponding path program 2 times [2022-03-19 06:46:15,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:15,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775870933] [2022-03-19 06:46:15,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:15,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 06:46:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 06:46:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:46:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 06:46:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 06:46:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:15,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:15,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775870933] [2022-03-19 06:46:15,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775870933] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:15,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:15,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 06:46:15,951 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:15,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [585418523] [2022-03-19 06:46:15,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [585418523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:15,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:15,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 06:46:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401501740] [2022-03-19 06:46:15,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:15,951 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 06:46:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 06:46:15,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-03-19 06:46:15,952 INFO L87 Difference]: Start difference. First operand 625 states and 739 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 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) [2022-03-19 06:46:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:17,080 INFO L93 Difference]: Finished difference Result 727 states and 855 transitions. [2022-03-19 06:46:17,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-19 06:46:17,080 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 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 86 [2022-03-19 06:46:17,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:17,082 INFO L225 Difference]: With dead ends: 727 [2022-03-19 06:46:17,083 INFO L226 Difference]: Without dead ends: 706 [2022-03-19 06:46:17,083 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-19 06:46:17,083 INFO L912 BasicCegarLoop]: 318 mSDtfsCounter, 222 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:17,083 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 1816 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-19 06:46:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-19 06:46:17,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 617. [2022-03-19 06:46:17,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 495 states have (on average 1.197979797979798) internal successors, (593), 502 states have internal predecessors, (593), 63 states have call successors, (63), 50 states have call predecessors, (63), 58 states have return successors, (72), 65 states have call predecessors, (72), 58 states have call successors, (72) [2022-03-19 06:46:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 728 transitions. [2022-03-19 06:46:17,224 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 728 transitions. Word has length 86 [2022-03-19 06:46:17,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:17,224 INFO L478 AbstractCegarLoop]: Abstraction has 617 states and 728 transitions. [2022-03-19 06:46:17,225 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 7 states have internal predecessors, (66), 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) [2022-03-19 06:46:17,225 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 728 transitions. [2022-03-19 06:46:17,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-19 06:46:17,225 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:17,226 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] [2022-03-19 06:46:17,226 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-19 06:46:17,226 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:17,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash -973728084, now seen corresponding path program 1 times [2022-03-19 06:46:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:17,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [45424726] [2022-03-19 06:46:17,226 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash -973728084, now seen corresponding path program 2 times [2022-03-19 06:46:17,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:17,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009862895] [2022-03-19 06:46:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:17,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:17,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:46:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:17,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:46:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:17,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:46:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:17,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-19 06:46:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:17,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:46:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:17,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 06:46:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:46:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:46:17,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:46:17,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009862895] [2022-03-19 06:46:17,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009862895] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:17,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:17,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:46:17,390 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:46:17,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [45424726] [2022-03-19 06:46:17,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [45424726] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:46:17,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:46:17,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:46:17,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841228846] [2022-03-19 06:46:17,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:46:17,390 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:46:17,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:17,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:46:17,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:46:17,391 INFO L87 Difference]: Start difference. First operand 617 states and 728 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 5 states have internal predecessors, (65), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-03-19 06:46:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:46:18,335 INFO L93 Difference]: Finished difference Result 1164 states and 1359 transitions. [2022-03-19 06:46:18,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 06:46:18,336 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 5 states have internal predecessors, (65), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 81 [2022-03-19 06:46:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:46:18,337 INFO L225 Difference]: With dead ends: 1164 [2022-03-19 06:46:18,338 INFO L226 Difference]: Without dead ends: 764 [2022-03-19 06:46:18,339 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-03-19 06:46:18,340 INFO L912 BasicCegarLoop]: 332 mSDtfsCounter, 825 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:46:18,340 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 544 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 06:46:18,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-19 06:46:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 738. [2022-03-19 06:46:18,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 592 states have (on average 1.1891891891891893) internal successors, (704), 601 states have internal predecessors, (704), 71 states have call successors, (71), 62 states have call predecessors, (71), 74 states have return successors, (84), 75 states have call predecessors, (84), 66 states have call successors, (84) [2022-03-19 06:46:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 859 transitions. [2022-03-19 06:46:18,507 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 859 transitions. Word has length 81 [2022-03-19 06:46:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:46:18,508 INFO L478 AbstractCegarLoop]: Abstraction has 738 states and 859 transitions. [2022-03-19 06:46:18,508 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 5 states have internal predecessors, (65), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-03-19 06:46:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 859 transitions. [2022-03-19 06:46:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-19 06:46:18,509 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:46:18,509 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] [2022-03-19 06:46:18,509 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-19 06:46:18,509 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:46:18,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:46:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1810115048, now seen corresponding path program 1 times [2022-03-19 06:46:18,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:46:18,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1981466030] [2022-03-19 06:46:18,510 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:46:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1810115048, now seen corresponding path program 2 times [2022-03-19 06:46:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:46:18,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217854452] [2022-03-19 06:46:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:46:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:46:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 06:46:18,524 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 06:46:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 06:46:18,603 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 06:46:18,603 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-19 06:46:18,603 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-19 06:46:18,607 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 06:46:18,609 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-19 06:46:18,611 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2] [2022-03-19 06:46:18,614 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 06:46:18,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 06:46:18 BoogieIcfgContainer [2022-03-19 06:46:18,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 06:46:18,647 INFO L158 Benchmark]: Toolchain (without parser) took 47599.37ms. Allocated memory was 195.0MB in the beginning and 571.5MB in the end (delta: 376.4MB). Free memory was 139.9MB in the beginning and 256.1MB in the end (delta: -116.2MB). Peak memory consumption was 260.5MB. Max. memory is 8.0GB. [2022-03-19 06:46:18,647 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 157.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 06:46:18,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.47ms. Allocated memory is still 195.0MB. Free memory was 139.8MB in the beginning and 158.7MB in the end (delta: -18.9MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-03-19 06:46:18,648 INFO L158 Benchmark]: Boogie Preprocessor took 58.65ms. Allocated memory is still 195.0MB. Free memory was 158.7MB in the beginning and 155.1MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-19 06:46:18,649 INFO L158 Benchmark]: RCFGBuilder took 671.58ms. Allocated memory is still 195.0MB. Free memory was 155.1MB in the beginning and 115.2MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2022-03-19 06:46:18,649 INFO L158 Benchmark]: TraceAbstraction took 46539.38ms. Allocated memory was 195.0MB in the beginning and 571.5MB in the end (delta: 376.4MB). Free memory was 114.8MB in the beginning and 256.1MB in the end (delta: -141.4MB). Peak memory consumption was 236.0MB. Max. memory is 8.0GB. [2022-03-19 06:46:18,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 157.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 324.47ms. Allocated memory is still 195.0MB. Free memory was 139.8MB in the beginning and 158.7MB in the end (delta: -18.9MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.65ms. Allocated memory is still 195.0MB. Free memory was 158.7MB in the beginning and 155.1MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 671.58ms. Allocated memory is still 195.0MB. Free memory was 155.1MB in the beginning and 115.2MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * TraceAbstraction took 46539.38ms. Allocated memory was 195.0MB in the beginning and 571.5MB in the end (delta: 376.4MB). Free memory was 114.8MB in the beginning and 256.1MB in the end (delta: -141.4MB). Peak memory consumption was 236.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 65]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L36] int FloppyThread ; [L37] int KernelMode ; [L38] int Suspended ; [L39] int Executive ; [L40] int DiskController ; [L41] int FloppyDiskPeripheral ; [L42] int FlConfigCallBack ; [L43] int MaximumInterfaceType ; [L44] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L45] int myStatus ; [L46] int s ; [L47] int UNLOADED ; [L48] int NP ; [L49] int DC ; [L50] int SKIP1 ; [L51] int SKIP2 ; [L52] int MPR1 ; [L53] int MPR3 ; [L54] int IPC ; [L55] int pended ; [L56] int compRegistered ; [L57] int lowerDriverReturn ; [L58] int setEventCalled ; [L59] int customIrp ; [L91] int PagingReferenceCount = 0; [L92] int PagingMutex = 0; [L671] int status ; [L672] int irp = __VERIFIER_nondet_int() ; [L673] int pirp ; [L674] int pirp__IoStatus__Status ; [L675] int irp_choice = __VERIFIER_nondet_int() ; [L676] int devobj = __VERIFIER_nondet_int() ; [L677] int __cil_tmp8 ; [L679] FloppyThread = 0 [L680] KernelMode = 0 [L681] Suspended = 0 [L682] Executive = 0 [L683] DiskController = 0 [L684] FloppyDiskPeripheral = 0 [L685] FlConfigCallBack = 0 [L686] MaximumInterfaceType = 0 [L687] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L688] myStatus = 0 [L689] s = 0 [L690] UNLOADED = 0 [L691] NP = 0 [L692] DC = 0 [L693] SKIP1 = 0 [L694] SKIP2 = 0 [L695] MPR1 = 0 [L696] MPR3 = 0 [L697] IPC = 0 [L698] pended = 0 [L699] compRegistered = 0 [L700] lowerDriverReturn = 0 [L701] setEventCalled = 0 [L702] customIrp = 0 [L706] status = 0 [L707] pirp = irp [L708] CALL _BLAST_init() [L74] UNLOADED = 0 [L75] NP = 1 [L76] DC = 2 [L77] SKIP1 = 3 [L78] SKIP2 = 4 [L79] MPR1 = 5 [L80] MPR3 = 6 [L81] IPC = 7 [L82] s = UNLOADED [L83] pended = 0 [L84] compRegistered = 0 [L85] lowerDriverReturn = 0 [L86] setEventCalled = 0 [L87] customIrp = 0 [L708] RET _BLAST_init() [L710] COND TRUE status >= 0 [L711] s = NP [L712] customIrp = 0 [L713] setEventCalled = customIrp [L714] lowerDriverReturn = setEventCalled [L715] compRegistered = lowerDriverReturn [L716] pended = compRegistered [L717] pirp__IoStatus__Status = 0 [L718] myStatus = 0 [L719] COND TRUE irp_choice == 0 [L720] pirp__IoStatus__Status = -1073741637 [L721] myStatus = -1073741637 [L724] CALL stub_driver_init() [L661] s = NP [L662] pended = 0 [L663] compRegistered = 0 [L664] lowerDriverReturn = 0 [L665] setEventCalled = 0 [L666] customIrp = 0 [L724] RET stub_driver_init() [L727] COND FALSE !(status < 0) [L731] int tmp_ndt_1; [L732] tmp_ndt_1 = __VERIFIER_nondet_int() [L733] COND TRUE tmp_ndt_1 == 3 [L740] CALL, EXPR FloppyPnp(devobj, pirp) [L164] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L165] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L166] int Irp__IoStatus__Information ; [L167] int Irp__IoStatus__Status ; [L168] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L169] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L170] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L171] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L172] int disketteExtension__HoldNewRequests ; [L173] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L174] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L175] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L176] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L177] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L178] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L179] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L180] int irpSp ; [L181] int disketteExtension ; [L182] int ntStatus ; [L183] int doneEvent = __VERIFIER_nondet_int() ; [L184] int irpSp___0 ; [L185] int nextIrpSp ; [L186] int nextIrpSp__Control ; [L187] int irpSp___1 ; [L188] int irpSp__Context ; [L189] int irpSp__Control ; [L190] long __cil_tmp29 ; [L191] long __cil_tmp30 ; [L194] ntStatus = 0 [L195] PagingReferenceCount ++ [L196] COND TRUE PagingReferenceCount == 1 [L199] disketteExtension = DeviceObject__DeviceExtension [L200] irpSp = Irp__Tail__Overlay__CurrentStackLocation [L201] COND FALSE !(\read(disketteExtension__IsRemoved)) [L210] COND FALSE !(irpSp__MinorFunction == 0) [L213] COND TRUE irpSp__MinorFunction == 5 [L239] COND TRUE irpSp__MinorFunction == 5 [L242] COND FALSE !(! disketteExtension__IsStarted) [L258] disketteExtension__HoldNewRequests = 1 [L259] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L101] int status ; [L102] int threadHandle = __VERIFIER_nondet_int() ; [L103] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L104] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L105] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L106] int Irp__IoStatus__Status ; [L107] int Irp__IoStatus__Information ; [L108] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L109] int ObjAttributes = __VERIFIER_nondet_int() ; [L110] int __cil_tmp12 ; [L111] int __cil_tmp13 ; [L114] COND FALSE !(DisketteExtension__PoweringDown == 1) [L120] DisketteExtension__ThreadReferenceCount ++ [L121] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) [L153] COND TRUE pended == 0 [L154] pended = 1 [L160] return (259); [L259] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L259] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L262] __cil_tmp29 = (long )ntStatus [L263] COND TRUE __cil_tmp29 == 259L [L265-L266] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L1036] COND FALSE !(s == MPR3) [L1045] COND FALSE !(customIrp == 1) [L1049] COND FALSE !(s == MPR3) [L1056] int tmp_ndt_8; [L1057] tmp_ndt_8 = __VERIFIER_nondet_int() [L1058] COND TRUE tmp_ndt_8 == 0 [L1064] return (0); [L265-L266] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L268] COND TRUE disketteExtension__FloppyThread != 0 [L271] disketteExtension__FloppyThread = 0 [L272] Irp__IoStatus__Status = 0 [L273] myStatus = 0 [L274] COND TRUE s == NP [L275] s = SKIP1 [L282] Irp__CurrentLocation ++ [L283] Irp__Tail__Overlay__CurrentStackLocation ++ [L284] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L938] int returnVal2 ; [L939] int compRetStatus1 ; [L940] int lcontext = __VERIFIER_nondet_int() ; [L941] unsigned long __cil_tmp7 ; [L944] COND FALSE !(\read(compRegistered)) [L957] int tmp_ndt_12; [L958] tmp_ndt_12 = __VERIFIER_nondet_int() [L959] COND TRUE tmp_ndt_12 == 0 [L970] returnVal2 = 0 [L983] COND FALSE !(s == NP) [L987] COND FALSE !(s == MPR1) [L996] COND TRUE s == SKIP1 [L997] s = SKIP2 [L998] lowerDriverReturn = returnVal2 [L1006] return (returnVal2); [L284] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L284] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L430] PagingReferenceCount -- [L431] COND TRUE PagingReferenceCount == 0 [L434] return (ntStatus); [L740] RET, EXPR FloppyPnp(devobj, pirp) [L740] status = FloppyPnp(devobj, pirp) [L750] COND TRUE pended == 1 [L751] COND FALSE !(s == NP) [L758] COND TRUE pended == 1 [L759] COND FALSE !(s == MPR3) [L766] COND TRUE s != UNLOADED [L767] COND TRUE status != -1 [L768] COND FALSE !(s != SKIP2) [L782] COND TRUE pended == 1 [L783] COND TRUE status != 259 [L784] CALL errorFn() [L65] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 27 procedures, 308 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.5s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 36.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19838 SdHoareTripleChecker+Valid, 27.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19544 mSDsluCounter, 37140 SdHoareTripleChecker+Invalid, 22.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23846 mSDsCounter, 6584 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46130 IncrementalHoareTripleChecker+Invalid, 52714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6584 mSolverCounterUnsat, 13294 mSDtfsCounter, 46130 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 862 GetRequests, 355 SyntacticMatches, 7 SemanticMatches, 500 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=845occurred in iteration=10, InterpolantAutomatonStates: 435, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 38 MinimizatonAttempts, 2276 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-19 06:46:18,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...