/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 04:10:04,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 04:10:04,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 04:10:04,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-15 04:10:04,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-15 04:10:04,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-15 04:10:04,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-15 04:10:04,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-15 04:10:04,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-15 04:10:04,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-15 04:10:04,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-15 04:10:04,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-15 04:10:04,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 04:10:04,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 04:10:04,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 04:10:04,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 04:10:04,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 04:10:04,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 04:10:04,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 04:10:04,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 04:10:04,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 04:10:04,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 04:10:04,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 04:10:04,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 04:10:04,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-15 04:10:04,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-15 04:10:04,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-15 04:10:04,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-15 04:10:04,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-15 04:10:04,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-02-15 04:10:04,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 04:10:04,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 04:10:04,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 04:10:04,880 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-15 04:10:04,889 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 04:10:04,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 04:10:04,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 04:10:04,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 04:10:04,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 04:10:04,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 04:10:04,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 04:10:04,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 04:10:04,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 04:10:04,891 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 04:10:04,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 04:10:04,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 04:10:04,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 04:10:04,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 04:10:04,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 04:10:04,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 04:10:04,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 04:10:04,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 04:10:04,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 04:10:04,892 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-15 04:10:04,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 04:10:05,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 04:10:05,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 04:10:05,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 04:10:05,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 04:10:05,126 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 04:10:05,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2022-02-15 04:10:05,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa74cb2f/854101279f1742438beb37cf8f136691/FLAGa8125f6b0 [2022-02-15 04:10:05,564 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 04:10:05,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2022-02-15 04:10:05,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa74cb2f/854101279f1742438beb37cf8f136691/FLAGa8125f6b0 [2022-02-15 04:10:05,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa74cb2f/854101279f1742438beb37cf8f136691 [2022-02-15 04:10:05,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 04:10:05,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 04:10:05,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 04:10:05,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 04:10:05,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 04:10:05,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:10:05" (1/1) ... [2022-02-15 04:10:05,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6b0a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:10:05, skipping insertion in model container [2022-02-15 04:10:05,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:10:05" (1/1) ... [2022-02-15 04:10:05,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 04:10:05,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 04:10:05,875 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/kbfiltr_simpl2.cil-2.c[29656,29669] [2022-02-15 04:10:05,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 04:10:05,897 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 04:10:05,962 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/kbfiltr_simpl2.cil-2.c[29656,29669] [2022-02-15 04:10:05,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 04:10:05,972 INFO L208 MainTranslator]: Completed translation [2022-02-15 04:10:05,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:10:05 WrapperNode [2022-02-15 04:10:05,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 04:10:05,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 04:10:05,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 04:10:05,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 04:10:05,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:10:05" (1/1) ... [2022-02-15 04:10:05,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:10:05" (1/1) ... [2022-02-15 04:10:06,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:10:05" (1/1) ... [2022-02-15 04:10:06,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:10:05" (1/1) ... [2022-02-15 04:10:06,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:10:05" (1/1) ... [2022-02-15 04:10:06,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:10:05" (1/1) ... [2022-02-15 04:10:06,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:10:05" (1/1) ... [2022-02-15 04:10:06,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 04:10:06,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 04:10:06,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 04:10:06,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 04:10:06,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:10:05" (1/1) ... [2022-02-15 04:10:06,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 04:10:06,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 04:10:06,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 04:10:06,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 04:10:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 04:10:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 04:10:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 04:10:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-15 04:10:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-15 04:10:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-02-15 04:10:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 04:10:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-15 04:10:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-15 04:10:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-15 04:10:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-15 04:10:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-15 04:10:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-02-15 04:10:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-02-15 04:10:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-02-15 04:10:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-02-15 04:10:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-15 04:10:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-02-15 04:10:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-15 04:10:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 04:10:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 04:10:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 04:10:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 04:10:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-15 04:10:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 04:10:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-15 04:10:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 04:10:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-15 04:10:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 04:10:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 04:10:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 04:10:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 04:10:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 04:10:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 04:10:06,216 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 04:10:06,217 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 04:10:06,276 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:10:06,358 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-02-15 04:10:06,358 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-02-15 04:10:06,363 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:10:06,416 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-15 04:10:06,416 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-15 04:10:06,515 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:10:06,529 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-15 04:10:06,529 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-15 04:10:06,541 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:10:06,621 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-15 04:10:06,621 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-15 04:10:06,626 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:10:06,643 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-02-15 04:10:06,643 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-02-15 04:10:06,647 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:10:06,677 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-15 04:10:06,677 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-15 04:10:06,695 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 04:10:06,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 04:10:06,702 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-15 04:10:06,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:10:06 BoogieIcfgContainer [2022-02-15 04:10:06,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 04:10:06,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 04:10:06,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 04:10:06,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 04:10:06,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 04:10:05" (1/3) ... [2022-02-15 04:10:06,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a9ced9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:10:06, skipping insertion in model container [2022-02-15 04:10:06,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:10:05" (2/3) ... [2022-02-15 04:10:06,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a9ced9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:10:06, skipping insertion in model container [2022-02-15 04:10:06,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:10:06" (3/3) ... [2022-02-15 04:10:06,715 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2022-02-15 04:10:06,719 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 04:10:06,719 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 04:10:06,749 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 04:10:06,754 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, 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, mLoopAccelerationTechnique=QVASR [2022-02-15 04:10:06,754 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 04:10:06,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 200 states have internal predecessors, (284), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2022-02-15 04:10:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-15 04:10:06,780 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:06,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:06,781 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1235546278, now seen corresponding path program 1 times [2022-02-15 04:10:06,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:06,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045645749] [2022-02-15 04:10:06,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:06,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:06,835 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:07,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:07,124 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:07,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045645749] [2022-02-15 04:10:07,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2045645749] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:07,125 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:07,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 04:10:07,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454123950] [2022-02-15 04:10:07,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:07,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 04:10:07,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:07,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 04:10:07,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:10:07,155 INFO L87 Difference]: Start difference. First operand has 240 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 200 states have internal predecessors, (284), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 04:10:07,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:07,744 INFO L93 Difference]: Finished difference Result 417 states and 628 transitions. [2022-02-15 04:10:07,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 04:10:07,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-02-15 04:10:07,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:07,754 INFO L225 Difference]: With dead ends: 417 [2022-02-15 04:10:07,754 INFO L226 Difference]: Without dead ends: 259 [2022-02-15 04:10:07,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:10:07,760 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 328 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:07,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 444 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 04:10:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-02-15 04:10:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2022-02-15 04:10:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 176 states have (on average 1.4943181818181819) internal successors, (263), 192 states have internal predecessors, (263), 39 states have call successors, (39), 17 states have call predecessors, (39), 15 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-02-15 04:10:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2022-02-15 04:10:07,809 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2022-02-15 04:10:07,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:07,809 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2022-02-15 04:10:07,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 04:10:07,809 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2022-02-15 04:10:07,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 04:10:07,810 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:07,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:07,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 04:10:07,811 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:07,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:07,811 INFO L85 PathProgramCache]: Analyzing trace with hash -225403307, now seen corresponding path program 1 times [2022-02-15 04:10:07,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:07,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532412725] [2022-02-15 04:10:07,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:07,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:07,814 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:07,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:07,932 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:07,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532412725] [2022-02-15 04:10:07,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [532412725] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:07,932 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:07,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 04:10:07,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377253212] [2022-02-15 04:10:07,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:07,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 04:10:07,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:07,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 04:10:07,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 04:10:07,934 INFO L87 Difference]: Start difference. First operand 231 states and 326 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) [2022-02-15 04:10:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:08,553 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2022-02-15 04:10:08,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 04:10:08,554 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 [2022-02-15 04:10:08,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:08,556 INFO L225 Difference]: With dead ends: 410 [2022-02-15 04:10:08,556 INFO L226 Difference]: Without dead ends: 349 [2022-02-15 04:10:08,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-15 04:10:08,558 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 386 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:08,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 474 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 04:10:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-02-15 04:10:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2022-02-15 04:10:08,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 239 states have (on average 1.393305439330544) internal successors, (333), 243 states have internal predecessors, (333), 38 states have call successors, (38), 23 states have call predecessors, (38), 26 states have return successors, (44), 40 states have call predecessors, (44), 29 states have call successors, (44) [2022-02-15 04:10:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2022-02-15 04:10:08,593 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 28 [2022-02-15 04:10:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:08,593 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2022-02-15 04:10:08,594 INFO L471 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) [2022-02-15 04:10:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2022-02-15 04:10:08,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 04:10:08,594 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:08,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:08,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 04:10:08,595 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:08,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:08,595 INFO L85 PathProgramCache]: Analyzing trace with hash -809602478, now seen corresponding path program 1 times [2022-02-15 04:10:08,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:08,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134650469] [2022-02-15 04:10:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:08,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:08,598 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:08,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:08,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:08,713 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:08,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134650469] [2022-02-15 04:10:08,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1134650469] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:08,713 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:08,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 04:10:08,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011866711] [2022-02-15 04:10:08,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:08,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 04:10:08,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:08,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 04:10:08,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 04:10:08,715 INFO L87 Difference]: Start difference. First operand 304 states and 415 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 04:10:09,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:09,208 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2022-02-15 04:10:09,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 04:10:09,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-02-15 04:10:09,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:09,211 INFO L225 Difference]: With dead ends: 487 [2022-02-15 04:10:09,211 INFO L226 Difference]: Without dead ends: 368 [2022-02-15 04:10:09,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-02-15 04:10:09,212 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 410 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:09,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 366 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 04:10:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-02-15 04:10:09,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2022-02-15 04:10:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 280 states have (on average 1.3857142857142857) internal successors, (388), 282 states have internal predecessors, (388), 34 states have call successors, (34), 23 states have call predecessors, (34), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-02-15 04:10:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 466 transitions. [2022-02-15 04:10:09,243 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 466 transitions. Word has length 28 [2022-02-15 04:10:09,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:09,243 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 466 transitions. [2022-02-15 04:10:09,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 04:10:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 466 transitions. [2022-02-15 04:10:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-15 04:10:09,256 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:09,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:09,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 04:10:09,256 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:09,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:09,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1415760533, now seen corresponding path program 1 times [2022-02-15 04:10:09,257 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:09,257 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74485985] [2022-02-15 04:10:09,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:09,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:09,259 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:09,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:09,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:09,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:09,371 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:09,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74485985] [2022-02-15 04:10:09,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [74485985] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:09,371 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:09,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 04:10:09,372 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043634025] [2022-02-15 04:10:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:09,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 04:10:09,372 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:09,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 04:10:09,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 04:10:09,373 INFO L87 Difference]: Start difference. First operand 344 states and 466 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 04:10:09,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:09,849 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2022-02-15 04:10:09,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 04:10:09,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-02-15 04:10:09,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:09,851 INFO L225 Difference]: With dead ends: 347 [2022-02-15 04:10:09,851 INFO L226 Difference]: Without dead ends: 343 [2022-02-15 04:10:09,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 04:10:09,852 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 189 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:09,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 393 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 04:10:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-02-15 04:10:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2022-02-15 04:10:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 280 states have (on average 1.3785714285714286) internal successors, (386), 281 states have internal predecessors, (386), 33 states have call successors, (33), 23 states have call predecessors, (33), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-02-15 04:10:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2022-02-15 04:10:09,872 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 38 [2022-02-15 04:10:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:09,873 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2022-02-15 04:10:09,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-15 04:10:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2022-02-15 04:10:09,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-15 04:10:09,874 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:09,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:09,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 04:10:09,875 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:09,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:09,875 INFO L85 PathProgramCache]: Analyzing trace with hash 605107567, now seen corresponding path program 1 times [2022-02-15 04:10:09,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:09,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131653540] [2022-02-15 04:10:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:09,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:09,877 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:09,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:09,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:09,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 04:10:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:09,992 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:09,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131653540] [2022-02-15 04:10:09,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2131653540] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:09,992 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:09,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 04:10:09,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840406175] [2022-02-15 04:10:09,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:09,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 04:10:09,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:09,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 04:10:09,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-15 04:10:09,993 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-15 04:10:10,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:10,633 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2022-02-15 04:10:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 04:10:10,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-02-15 04:10:10,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:10,635 INFO L225 Difference]: With dead ends: 394 [2022-02-15 04:10:10,635 INFO L226 Difference]: Without dead ends: 325 [2022-02-15 04:10:10,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-02-15 04:10:10,636 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 603 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:10,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 583 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 04:10:10,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-02-15 04:10:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 304. [2022-02-15 04:10:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 246 states have (on average 1.3699186991869918) internal successors, (337), 247 states have internal predecessors, (337), 30 states have call successors, (30), 21 states have call predecessors, (30), 27 states have return successors, (39), 36 states have call predecessors, (39), 24 states have call successors, (39) [2022-02-15 04:10:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 406 transitions. [2022-02-15 04:10:10,656 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 406 transitions. Word has length 46 [2022-02-15 04:10:10,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:10,656 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 406 transitions. [2022-02-15 04:10:10,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-15 04:10:10,656 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 406 transitions. [2022-02-15 04:10:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-15 04:10:10,657 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:10,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:10,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 04:10:10,658 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:10,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:10,658 INFO L85 PathProgramCache]: Analyzing trace with hash -447308474, now seen corresponding path program 1 times [2022-02-15 04:10:10,658 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:10,659 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737209532] [2022-02-15 04:10:10,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:10,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:10,661 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:10,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:10,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:10,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 04:10:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:10,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 04:10:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:10,867 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:10,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737209532] [2022-02-15 04:10:10,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [737209532] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:10,867 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:10,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 04:10:10,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330038612] [2022-02-15 04:10:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:10,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 04:10:10,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 04:10:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 04:10:10,868 INFO L87 Difference]: Start difference. First operand 304 states and 406 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 04:10:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:11,628 INFO L93 Difference]: Finished difference Result 334 states and 440 transitions. [2022-02-15 04:10:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 04:10:11,629 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 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 45 [2022-02-15 04:10:11,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:11,630 INFO L225 Difference]: With dead ends: 334 [2022-02-15 04:10:11,630 INFO L226 Difference]: Without dead ends: 325 [2022-02-15 04:10:11,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-02-15 04:10:11,631 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1079 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:11,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 500 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 04:10:11,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-02-15 04:10:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 320. [2022-02-15 04:10:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 260 states have (on average 1.3615384615384616) internal successors, (354), 260 states have internal predecessors, (354), 30 states have call successors, (30), 21 states have call predecessors, (30), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-02-15 04:10:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 425 transitions. [2022-02-15 04:10:11,658 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 425 transitions. Word has length 45 [2022-02-15 04:10:11,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:11,658 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 425 transitions. [2022-02-15 04:10:11,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 04:10:11,658 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 425 transitions. [2022-02-15 04:10:11,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-02-15 04:10:11,659 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:11,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:11,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 04:10:11,660 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:11,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:11,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1360970565, now seen corresponding path program 1 times [2022-02-15 04:10:11,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:11,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919323532] [2022-02-15 04:10:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:11,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:11,662 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:11,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:11,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:11,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:11,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 04:10:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:11,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 04:10:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:11,828 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:11,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919323532] [2022-02-15 04:10:11,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1919323532] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:11,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:11,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 04:10:11,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048820694] [2022-02-15 04:10:11,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:11,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 04:10:11,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:11,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 04:10:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 04:10:11,830 INFO L87 Difference]: Start difference. First operand 320 states and 425 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 04:10:12,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:12,553 INFO L93 Difference]: Finished difference Result 330 states and 433 transitions. [2022-02-15 04:10:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 04:10:12,554 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 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 46 [2022-02-15 04:10:12,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:12,556 INFO L225 Difference]: With dead ends: 330 [2022-02-15 04:10:12,556 INFO L226 Difference]: Without dead ends: 325 [2022-02-15 04:10:12,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-02-15 04:10:12,558 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 783 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:12,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 423 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 04:10:12,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-02-15 04:10:12,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 320. [2022-02-15 04:10:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 260 states have (on average 1.3576923076923078) internal successors, (353), 260 states have internal predecessors, (353), 30 states have call successors, (30), 21 states have call predecessors, (30), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-02-15 04:10:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 424 transitions. [2022-02-15 04:10:12,609 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 424 transitions. Word has length 46 [2022-02-15 04:10:12,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:12,610 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 424 transitions. [2022-02-15 04:10:12,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 04:10:12,610 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 424 transitions. [2022-02-15 04:10:12,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 04:10:12,611 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:12,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:12,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 04:10:12,612 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:12,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:12,612 INFO L85 PathProgramCache]: Analyzing trace with hash 548356508, now seen corresponding path program 1 times [2022-02-15 04:10:12,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:12,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356214123] [2022-02-15 04:10:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:12,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:12,614 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:12,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:12,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 04:10:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:12,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 04:10:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:12,748 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:12,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356214123] [2022-02-15 04:10:12,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1356214123] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:12,748 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:12,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 04:10:12,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455029293] [2022-02-15 04:10:12,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:12,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 04:10:12,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:12,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 04:10:12,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-15 04:10:12,749 INFO L87 Difference]: Start difference. First operand 320 states and 424 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-15 04:10:13,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:13,043 INFO L93 Difference]: Finished difference Result 338 states and 446 transitions. [2022-02-15 04:10:13,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 04:10:13,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-02-15 04:10:13,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:13,044 INFO L225 Difference]: With dead ends: 338 [2022-02-15 04:10:13,044 INFO L226 Difference]: Without dead ends: 272 [2022-02-15 04:10:13,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-02-15 04:10:13,045 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 581 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:13,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 356 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 04:10:13,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-02-15 04:10:13,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 242. [2022-02-15 04:10:13,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 198 states have (on average 1.378787878787879) internal successors, (273), 201 states have internal predecessors, (273), 27 states have call successors, (27), 19 states have call predecessors, (27), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-02-15 04:10:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2022-02-15 04:10:13,068 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 47 [2022-02-15 04:10:13,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:13,068 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2022-02-15 04:10:13,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-15 04:10:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2022-02-15 04:10:13,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 04:10:13,069 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:13,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:13,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 04:10:13,069 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:13,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:13,070 INFO L85 PathProgramCache]: Analyzing trace with hash 916659597, now seen corresponding path program 1 times [2022-02-15 04:10:13,070 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:13,070 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416482863] [2022-02-15 04:10:13,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:13,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:13,071 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:13,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:13,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-15 04:10:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:13,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:10:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:13,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 04:10:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:13,178 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:13,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416482863] [2022-02-15 04:10:13,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [416482863] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:13,178 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:13,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 04:10:13,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301087542] [2022-02-15 04:10:13,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:13,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 04:10:13,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:13,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 04:10:13,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-15 04:10:13,179 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:10:13,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:13,817 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2022-02-15 04:10:13,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 04:10:13,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2022-02-15 04:10:13,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:13,819 INFO L225 Difference]: With dead ends: 270 [2022-02-15 04:10:13,820 INFO L226 Difference]: Without dead ends: 240 [2022-02-15 04:10:13,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-02-15 04:10:13,822 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 339 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:13,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 506 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 04:10:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-02-15 04:10:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-02-15 04:10:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 197 states have (on average 1.3705583756345177) internal successors, (270), 199 states have internal predecessors, (270), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-02-15 04:10:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2022-02-15 04:10:13,863 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2022-02-15 04:10:13,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:13,863 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2022-02-15 04:10:13,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:10:13,863 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2022-02-15 04:10:13,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-15 04:10:13,864 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:13,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:13,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 04:10:13,864 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1556296422, now seen corresponding path program 1 times [2022-02-15 04:10:13,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:13,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614760371] [2022-02-15 04:10:13,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:13,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:13,868 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:13,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:13,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-15 04:10:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:14,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 04:10:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:14,029 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:14,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614760371] [2022-02-15 04:10:14,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [614760371] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:14,029 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:14,029 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 04:10:14,029 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382397925] [2022-02-15 04:10:14,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:14,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 04:10:14,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:14,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 04:10:14,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-15 04:10:14,030 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-15 04:10:14,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:14,699 INFO L93 Difference]: Finished difference Result 284 states and 365 transitions. [2022-02-15 04:10:14,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 04:10:14,699 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 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 51 [2022-02-15 04:10:14,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:14,700 INFO L225 Difference]: With dead ends: 284 [2022-02-15 04:10:14,700 INFO L226 Difference]: Without dead ends: 243 [2022-02-15 04:10:14,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-02-15 04:10:14,702 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 655 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:14,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 593 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 04:10:14,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-02-15 04:10:14,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 240. [2022-02-15 04:10:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 199 states have internal predecessors, (268), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-02-15 04:10:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2022-02-15 04:10:14,749 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 51 [2022-02-15 04:10:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:14,749 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2022-02-15 04:10:14,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-15 04:10:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2022-02-15 04:10:14,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 04:10:14,750 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:14,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:14,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 04:10:14,750 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:14,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:14,751 INFO L85 PathProgramCache]: Analyzing trace with hash 460482069, now seen corresponding path program 1 times [2022-02-15 04:10:14,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:14,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594890921] [2022-02-15 04:10:14,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:14,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:14,752 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:14,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:14,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:14,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:14,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-15 04:10:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:14,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 04:10:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:14,939 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:14,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594890921] [2022-02-15 04:10:14,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1594890921] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:14,940 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:14,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 04:10:14,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424543122] [2022-02-15 04:10:14,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:14,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 04:10:14,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:14,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 04:10:14,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-15 04:10:14,941 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 04:10:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:15,603 INFO L93 Difference]: Finished difference Result 272 states and 349 transitions. [2022-02-15 04:10:15,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 04:10:15,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 6 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 53 [2022-02-15 04:10:15,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:15,605 INFO L225 Difference]: With dead ends: 272 [2022-02-15 04:10:15,605 INFO L226 Difference]: Without dead ends: 253 [2022-02-15 04:10:15,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-02-15 04:10:15,605 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 655 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:15,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 562 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 04:10:15,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-02-15 04:10:15,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 243. [2022-02-15 04:10:15,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 200 states have (on average 1.36) internal successors, (272), 202 states have internal predecessors, (272), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-02-15 04:10:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 319 transitions. [2022-02-15 04:10:15,631 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 319 transitions. Word has length 53 [2022-02-15 04:10:15,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:15,631 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 319 transitions. [2022-02-15 04:10:15,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 04:10:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 319 transitions. [2022-02-15 04:10:15,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 04:10:15,632 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:15,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:15,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 04:10:15,632 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:15,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1533662637, now seen corresponding path program 1 times [2022-02-15 04:10:15,633 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:15,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885480533] [2022-02-15 04:10:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:15,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:15,634 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:15,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:15,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:15,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:15,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-15 04:10:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:15,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 04:10:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:15,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:15,800 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:15,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885480533] [2022-02-15 04:10:15,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [885480533] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:15,800 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:15,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 04:10:15,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222976217] [2022-02-15 04:10:15,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:15,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 04:10:15,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:15,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 04:10:15,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 04:10:15,801 INFO L87 Difference]: Start difference. First operand 243 states and 319 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-15 04:10:16,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:16,565 INFO L93 Difference]: Finished difference Result 284 states and 365 transitions. [2022-02-15 04:10:16,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 04:10:16,566 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 6 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 53 [2022-02-15 04:10:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:16,567 INFO L225 Difference]: With dead ends: 284 [2022-02-15 04:10:16,567 INFO L226 Difference]: Without dead ends: 240 [2022-02-15 04:10:16,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-02-15 04:10:16,568 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 451 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:16,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 572 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 04:10:16,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-02-15 04:10:16,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2022-02-15 04:10:16,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 195 states have (on average 1.3435897435897435) internal successors, (262), 197 states have internal predecessors, (262), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-02-15 04:10:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 309 transitions. [2022-02-15 04:10:16,592 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 309 transitions. Word has length 53 [2022-02-15 04:10:16,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:16,592 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 309 transitions. [2022-02-15 04:10:16,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-15 04:10:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 309 transitions. [2022-02-15 04:10:16,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-15 04:10:16,593 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:16,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:16,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 04:10:16,593 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:16,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:16,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1386969835, now seen corresponding path program 1 times [2022-02-15 04:10:16,593 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:16,594 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551794318] [2022-02-15 04:10:16,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:16,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:16,595 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:16,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:16,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:16,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:16,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-15 04:10:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:16,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 04:10:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:16,737 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:16,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551794318] [2022-02-15 04:10:16,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [551794318] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:16,737 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:16,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 04:10:16,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077676573] [2022-02-15 04:10:16,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:16,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 04:10:16,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:16,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 04:10:16,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-15 04:10:16,738 INFO L87 Difference]: Start difference. First operand 238 states and 309 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-15 04:10:17,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:17,374 INFO L93 Difference]: Finished difference Result 250 states and 321 transitions. [2022-02-15 04:10:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 04:10:17,374 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2022-02-15 04:10:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:17,375 INFO L225 Difference]: With dead ends: 250 [2022-02-15 04:10:17,375 INFO L226 Difference]: Without dead ends: 210 [2022-02-15 04:10:17,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:10:17,376 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 433 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:17,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 905 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 04:10:17,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-02-15 04:10:17,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-02-15 04:10:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 171 states have (on average 1.345029239766082) internal successors, (230), 173 states have internal predecessors, (230), 24 states have call successors, (24), 17 states have call predecessors, (24), 14 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2022-02-15 04:10:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 273 transitions. [2022-02-15 04:10:17,396 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 273 transitions. Word has length 53 [2022-02-15 04:10:17,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:17,397 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 273 transitions. [2022-02-15 04:10:17,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-15 04:10:17,397 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 273 transitions. [2022-02-15 04:10:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 04:10:17,397 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:17,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:17,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 04:10:17,398 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:17,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:17,398 INFO L85 PathProgramCache]: Analyzing trace with hash -438914869, now seen corresponding path program 1 times [2022-02-15 04:10:17,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:17,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123810192] [2022-02-15 04:10:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:17,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:17,399 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:17,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:17,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:17,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 04:10:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:17,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:17,560 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:17,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123810192] [2022-02-15 04:10:17,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [123810192] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:17,560 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:17,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 04:10:17,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159199598] [2022-02-15 04:10:17,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:17,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 04:10:17,560 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:17,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 04:10:17,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-02-15 04:10:17,561 INFO L87 Difference]: Start difference. First operand 210 states and 273 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-15 04:10:18,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:18,129 INFO L93 Difference]: Finished difference Result 226 states and 289 transitions. [2022-02-15 04:10:18,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 04:10:18,129 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 7 states have internal predecessors, (42), 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 54 [2022-02-15 04:10:18,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:18,130 INFO L225 Difference]: With dead ends: 226 [2022-02-15 04:10:18,130 INFO L226 Difference]: Without dead ends: 205 [2022-02-15 04:10:18,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-15 04:10:18,131 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 366 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:18,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 840 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 04:10:18,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-02-15 04:10:18,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-02-15 04:10:18,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 167 states have (on average 1.347305389221557) internal successors, (225), 169 states have internal predecessors, (225), 23 states have call successors, (23), 17 states have call predecessors, (23), 14 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-02-15 04:10:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 266 transitions. [2022-02-15 04:10:18,151 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 266 transitions. Word has length 54 [2022-02-15 04:10:18,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:18,151 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 266 transitions. [2022-02-15 04:10:18,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-15 04:10:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 266 transitions. [2022-02-15 04:10:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 04:10:18,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:18,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:18,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 04:10:18,152 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:18,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:18,153 INFO L85 PathProgramCache]: Analyzing trace with hash 432963036, now seen corresponding path program 1 times [2022-02-15 04:10:18,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:18,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303579258] [2022-02-15 04:10:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:18,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:18,154 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 04:10:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 04:10:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:10:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:18,316 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:18,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303579258] [2022-02-15 04:10:18,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1303579258] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:18,317 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:18,317 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 04:10:18,317 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670112834] [2022-02-15 04:10:18,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:18,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 04:10:18,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:18,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 04:10:18,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-15 04:10:18,318 INFO L87 Difference]: Start difference. First operand 205 states and 266 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:10:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:18,825 INFO L93 Difference]: Finished difference Result 263 states and 337 transitions. [2022-02-15 04:10:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 04:10:18,826 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-02-15 04:10:18,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:18,827 INFO L225 Difference]: With dead ends: 263 [2022-02-15 04:10:18,827 INFO L226 Difference]: Without dead ends: 222 [2022-02-15 04:10:18,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-02-15 04:10:18,827 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 273 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:18,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 671 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 04:10:18,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-02-15 04:10:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 210. [2022-02-15 04:10:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 171 states have (on average 1.3391812865497077) internal successors, (229), 173 states have internal predecessors, (229), 23 states have call successors, (23), 17 states have call predecessors, (23), 15 states have return successors, (19), 19 states have call predecessors, (19), 17 states have call successors, (19) [2022-02-15 04:10:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 271 transitions. [2022-02-15 04:10:18,850 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 271 transitions. Word has length 57 [2022-02-15 04:10:18,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:18,851 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 271 transitions. [2022-02-15 04:10:18,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:10:18,851 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 271 transitions. [2022-02-15 04:10:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 04:10:18,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:18,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:18,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 04:10:18,852 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1039954733, now seen corresponding path program 1 times [2022-02-15 04:10:18,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:18,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522247400] [2022-02-15 04:10:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:18,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:18,853 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 04:10:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 04:10:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:10:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:18,992 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:18,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522247400] [2022-02-15 04:10:18,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1522247400] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:18,992 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:18,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 04:10:18,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866622898] [2022-02-15 04:10:18,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:18,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 04:10:18,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:18,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 04:10:18,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-15 04:10:18,993 INFO L87 Difference]: Start difference. First operand 210 states and 271 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:10:19,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:19,562 INFO L93 Difference]: Finished difference Result 230 states and 294 transitions. [2022-02-15 04:10:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 04:10:19,562 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-02-15 04:10:19,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:19,563 INFO L225 Difference]: With dead ends: 230 [2022-02-15 04:10:19,563 INFO L226 Difference]: Without dead ends: 223 [2022-02-15 04:10:19,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-02-15 04:10:19,564 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 200 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:19,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 653 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 04:10:19,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-02-15 04:10:19,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 211. [2022-02-15 04:10:19,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 172 states have (on average 1.3372093023255813) internal successors, (230), 174 states have internal predecessors, (230), 23 states have call successors, (23), 17 states have call predecessors, (23), 15 states have return successors, (19), 19 states have call predecessors, (19), 17 states have call successors, (19) [2022-02-15 04:10:19,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 272 transitions. [2022-02-15 04:10:19,604 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 272 transitions. Word has length 57 [2022-02-15 04:10:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:19,604 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 272 transitions. [2022-02-15 04:10:19,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:10:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 272 transitions. [2022-02-15 04:10:19,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 04:10:19,605 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:19,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:19,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 04:10:19,605 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:19,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2132592656, now seen corresponding path program 1 times [2022-02-15 04:10:19,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:19,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557913397] [2022-02-15 04:10:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:19,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:19,607 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:19,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:19,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:19,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 04:10:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:19,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 04:10:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:19,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-02-15 04:10:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:19,782 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:19,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557913397] [2022-02-15 04:10:19,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [557913397] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:19,782 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:19,782 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 04:10:19,782 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505213150] [2022-02-15 04:10:19,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:19,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 04:10:19,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 04:10:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-02-15 04:10:19,783 INFO L87 Difference]: Start difference. First operand 211 states and 272 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:10:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:20,367 INFO L93 Difference]: Finished difference Result 223 states and 284 transitions. [2022-02-15 04:10:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 04:10:20,368 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-02-15 04:10:20,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:20,369 INFO L225 Difference]: With dead ends: 223 [2022-02-15 04:10:20,369 INFO L226 Difference]: Without dead ends: 209 [2022-02-15 04:10:20,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-02-15 04:10:20,369 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 358 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:20,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 916 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 04:10:20,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-02-15 04:10:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-02-15 04:10:20,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 171 states have (on average 1.3333333333333333) internal successors, (228), 173 states have internal predecessors, (228), 22 states have call successors, (22), 17 states have call predecessors, (22), 15 states have return successors, (18), 18 states have call predecessors, (18), 16 states have call successors, (18) [2022-02-15 04:10:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 268 transitions. [2022-02-15 04:10:20,396 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 268 transitions. Word has length 56 [2022-02-15 04:10:20,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:20,396 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 268 transitions. [2022-02-15 04:10:20,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:10:20,396 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 268 transitions. [2022-02-15 04:10:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 04:10:20,396 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:20,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:20,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 04:10:20,397 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:20,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1221590652, now seen corresponding path program 1 times [2022-02-15 04:10:20,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:20,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998416847] [2022-02-15 04:10:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:20,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:20,399 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:20,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:20,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 04:10:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:10:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:20,600 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:20,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998416847] [2022-02-15 04:10:20,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1998416847] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:20,600 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:20,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 04:10:20,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349587922] [2022-02-15 04:10:20,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:20,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 04:10:20,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 04:10:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:10:20,603 INFO L87 Difference]: Start difference. First operand 209 states and 268 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 7 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) [2022-02-15 04:10:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:21,511 INFO L93 Difference]: Finished difference Result 266 states and 329 transitions. [2022-02-15 04:10:21,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 04:10:21,511 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 7 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 [2022-02-15 04:10:21,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:21,513 INFO L225 Difference]: With dead ends: 266 [2022-02-15 04:10:21,513 INFO L226 Difference]: Without dead ends: 249 [2022-02-15 04:10:21,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-02-15 04:10:21,514 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 629 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:21,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 643 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 04:10:21,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-02-15 04:10:21,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 215. [2022-02-15 04:10:21,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 176 states have (on average 1.3238636363636365) internal successors, (233), 179 states have internal predecessors, (233), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (20), 18 states have call predecessors, (20), 16 states have call successors, (20) [2022-02-15 04:10:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 275 transitions. [2022-02-15 04:10:21,538 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 275 transitions. Word has length 55 [2022-02-15 04:10:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:21,538 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 275 transitions. [2022-02-15 04:10:21,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 7 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) [2022-02-15 04:10:21,538 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 275 transitions. [2022-02-15 04:10:21,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 04:10:21,539 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:21,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:21,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 04:10:21,539 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:21,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:21,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2050869943, now seen corresponding path program 1 times [2022-02-15 04:10:21,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:21,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186074974] [2022-02-15 04:10:21,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:21,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:21,541 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:21,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:21,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:21,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:21,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 04:10:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:21,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:10:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:21,730 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:21,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186074974] [2022-02-15 04:10:21,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [186074974] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:21,730 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:21,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 04:10:21,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120730883] [2022-02-15 04:10:21,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:21,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 04:10:21,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:21,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 04:10:21,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-02-15 04:10:21,731 INFO L87 Difference]: Start difference. First operand 215 states and 275 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 7 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) [2022-02-15 04:10:22,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:22,358 INFO L93 Difference]: Finished difference Result 231 states and 291 transitions. [2022-02-15 04:10:22,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 04:10:22,359 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 7 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 [2022-02-15 04:10:22,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:22,359 INFO L225 Difference]: With dead ends: 231 [2022-02-15 04:10:22,360 INFO L226 Difference]: Without dead ends: 193 [2022-02-15 04:10:22,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-02-15 04:10:22,360 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 242 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:22,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 824 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 04:10:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-02-15 04:10:22,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-02-15 04:10:22,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 155 states have (on average 1.2451612903225806) internal successors, (193), 158 states have internal predecessors, (193), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (18), 17 states have call predecessors, (18), 15 states have call successors, (18) [2022-02-15 04:10:22,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 232 transitions. [2022-02-15 04:10:22,384 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 232 transitions. Word has length 55 [2022-02-15 04:10:22,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:22,384 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 232 transitions. [2022-02-15 04:10:22,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 7 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) [2022-02-15 04:10:22,384 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 232 transitions. [2022-02-15 04:10:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 04:10:22,385 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:22,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:22,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 04:10:22,385 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:22,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:22,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1918234721, now seen corresponding path program 1 times [2022-02-15 04:10:22,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:22,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867267308] [2022-02-15 04:10:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:22,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:22,387 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:10:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:10:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:22,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:10:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:22,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 04:10:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:22,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-02-15 04:10:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:10:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:10:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:10:22,540 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:10:22,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867267308] [2022-02-15 04:10:22,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1867267308] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:10:22,541 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:10:22,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 04:10:22,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356457834] [2022-02-15 04:10:22,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:10:22,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 04:10:22,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:10:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 04:10:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-15 04:10:22,542 INFO L87 Difference]: Start difference. First operand 193 states and 232 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:10:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:10:22,860 INFO L93 Difference]: Finished difference Result 229 states and 273 transitions. [2022-02-15 04:10:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 04:10:22,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 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 58 [2022-02-15 04:10:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:10:22,862 INFO L225 Difference]: With dead ends: 229 [2022-02-15 04:10:22,862 INFO L226 Difference]: Without dead ends: 187 [2022-02-15 04:10:22,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-15 04:10:22,862 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 193 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 04:10:22,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 533 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 04:10:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-02-15 04:10:22,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-02-15 04:10:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 149 states have (on average 1.2348993288590604) internal successors, (184), 152 states have internal predecessors, (184), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (18), 17 states have call predecessors, (18), 15 states have call successors, (18) [2022-02-15 04:10:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2022-02-15 04:10:22,898 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 223 transitions. Word has length 58 [2022-02-15 04:10:22,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:10:22,898 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 223 transitions. [2022-02-15 04:10:22,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:10:22,899 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 223 transitions. [2022-02-15 04:10:22,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 04:10:22,900 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:10:22,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:22,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 04:10:22,900 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:10:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:10:22,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1199488421, now seen corresponding path program 1 times [2022-02-15 04:10:22,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:10:22,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122796690] [2022-02-15 04:10:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:10:22,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:10:22,903 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:10:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-15 04:10:22,923 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-15 04:10:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-15 04:10:22,971 INFO L138 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-15 04:10:22,971 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-15 04:10:22,975 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 04:10:22,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 04:10:22,980 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:10:22,982 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 04:10:23,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 04:10:23 BoogieIcfgContainer [2022-02-15 04:10:23,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 04:10:23,006 INFO L158 Benchmark]: Toolchain (without parser) took 17415.47ms. Allocated memory was 196.1MB in the beginning and 405.8MB in the end (delta: 209.7MB). Free memory was 142.5MB in the beginning and 297.2MB in the end (delta: -154.7MB). Peak memory consumption was 55.7MB. Max. memory is 8.0GB. [2022-02-15 04:10:23,006 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 196.1MB. Free memory is still 159.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 04:10:23,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.12ms. Allocated memory is still 196.1MB. Free memory was 142.4MB in the beginning and 163.7MB in the end (delta: -21.4MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. [2022-02-15 04:10:23,007 INFO L158 Benchmark]: Boogie Preprocessor took 73.04ms. Allocated memory is still 196.1MB. Free memory was 163.7MB in the beginning and 160.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-15 04:10:23,007 INFO L158 Benchmark]: RCFGBuilder took 656.78ms. Allocated memory is still 196.1MB. Free memory was 160.6MB in the beginning and 127.6MB in the end (delta: 33.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-02-15 04:10:23,010 INFO L158 Benchmark]: TraceAbstraction took 16301.02ms. Allocated memory was 196.1MB in the beginning and 405.8MB in the end (delta: 209.7MB). Free memory was 127.1MB in the beginning and 297.2MB in the end (delta: -170.1MB). Peak memory consumption was 40.7MB. Max. memory is 8.0GB. [2022-02-15 04:10:23,023 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 196.1MB. Free memory is still 159.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 379.12ms. Allocated memory is still 196.1MB. Free memory was 142.4MB in the beginning and 163.7MB in the end (delta: -21.4MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 73.04ms. Allocated memory is still 196.1MB. Free memory was 163.7MB in the beginning and 160.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 656.78ms. Allocated memory is still 196.1MB. Free memory was 160.6MB in the beginning and 127.6MB in the end (delta: 33.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 16301.02ms. Allocated memory was 196.1MB in the beginning and 405.8MB in the end (delta: 209.7MB). Free memory was 127.1MB in the beginning and 297.2MB in the end (delta: -170.1MB). Peak memory consumption was 40.7MB. 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: 1013]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] int KernelMode ; [L24] int Executive ; [L25] int DevicePowerState ; [L26] int s ; [L27] int UNLOADED ; [L28] int NP ; [L29] int DC ; [L30] int SKIP1 ; [L31] int SKIP2 ; [L32] int MPR1 ; [L33] int MPR3 ; [L34] int IPC ; [L35] int pended ; [L36] int compFptr ; [L37] int compRegistered ; [L38] int lowerDriverReturn ; [L39] int setEventCalled ; [L40] int customIrp ; [L41] int myStatus ; [L294] int status ; [L295] int irp = __VERIFIER_nondet_int() ; [L296] int pirp ; [L297] int pirp__IoStatus__Status ; [L298] int irp_choice = __VERIFIER_nondet_int() ; [L299] int devobj = __VERIFIER_nondet_int() ; [L300] int __cil_tmp8 ; [L302] KernelMode = 0 [L303] Executive = 0 [L304] DevicePowerState = 1 [L305] s = 0 [L306] UNLOADED = 0 [L307] NP = 0 [L308] DC = 0 [L309] SKIP1 = 0 [L310] SKIP2 = 0 [L311] MPR1 = 0 [L312] MPR3 = 0 [L313] IPC = 0 [L314] pended = 0 [L315] compFptr = 0 [L316] compRegistered = 0 [L317] lowerDriverReturn = 0 [L318] setEventCalled = 0 [L319] customIrp = 0 [L320] myStatus = 0 [L324] status = 0 [L325] pirp = irp [L326] CALL _BLAST_init() [L61] UNLOADED = 0 [L62] NP = 1 [L63] DC = 2 [L64] SKIP1 = 3 [L65] SKIP2 = 4 [L66] MPR1 = 5 [L67] MPR3 = 6 [L68] IPC = 7 [L69] s = UNLOADED [L70] pended = 0 [L71] compFptr = 0 [L72] compRegistered = 0 [L73] lowerDriverReturn = 0 [L74] setEventCalled = 0 [L75] customIrp = 0 [L326] RET _BLAST_init() [L328] COND TRUE status >= 0 [L329] s = NP [L330] customIrp = 0 [L331] setEventCalled = customIrp [L332] lowerDriverReturn = setEventCalled [L333] compRegistered = lowerDriverReturn [L334] pended = compRegistered [L335] pirp__IoStatus__Status = 0 [L336] myStatus = 0 [L337] COND FALSE !(irp_choice == 0) [L342] CALL stub_driver_init() [L47] s = NP [L48] pended = 0 [L49] compFptr = 0 [L50] compRegistered = 0 [L51] lowerDriverReturn = 0 [L52] setEventCalled = 0 [L53] customIrp = 0 [L342] RET stub_driver_init() [L345] COND FALSE !(status < 0) [L349] int tmp_ndt_1; [L350] tmp_ndt_1 = __VERIFIER_nondet_int() [L351] COND FALSE !(tmp_ndt_1 == 0) [L354] int tmp_ndt_2; [L355] tmp_ndt_2 = __VERIFIER_nondet_int() [L356] COND FALSE !(tmp_ndt_2 == 1) [L359] int tmp_ndt_3; [L360] tmp_ndt_3 = __VERIFIER_nondet_int() [L361] COND TRUE tmp_ndt_3 == 3 [L388] CALL, EXPR KbFilter_PnP(devobj, pirp) [L80] int devExt ; [L81] int irpStack ; [L82] int status ; [L83] int event = __VERIFIER_nondet_int() ; [L84] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L85] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L86] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L87] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L88] int devExt__Started ; [L89] int devExt__Removed ; [L90] int devExt__SurpriseRemoved ; [L91] int Irp__IoStatus__Status ; [L92] int Irp__IoStatus__Information ; [L93] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L94] int irpSp ; [L95] int nextIrpSp ; [L96] int nextIrpSp__Control ; [L97] int irpSp___0 ; [L98] int irpSp__Context ; [L99] int irpSp__Control ; [L100] long __cil_tmp23 ; [L103] status = 0 [L104] devExt = DeviceObject__DeviceExtension [L105] irpStack = Irp__Tail__Overlay__CurrentStackLocation [L106] COND FALSE !(irpStack__MinorFunction == 0) [L109] COND FALSE !(irpStack__MinorFunction == 23) [L112] COND TRUE irpStack__MinorFunction == 2 [L236] devExt__Removed = 1 [L237] COND TRUE s == NP [L238] s = SKIP1 [L245] Irp__CurrentLocation ++ [L246] Irp__Tail__Overlay__CurrentStackLocation ++ [L247] CALL IofCallDriver(devExt__TopOfStack, Irp) [L483] int returnVal2 ; [L484] int compRetStatus ; [L485] int lcontext = __VERIFIER_nondet_int() ; [L486] long long __cil_tmp7 ; [L489] COND FALSE !(\read(compRegistered)) [L502] int tmp_ndt_6; [L503] tmp_ndt_6 = __VERIFIER_nondet_int() [L504] COND FALSE !(tmp_ndt_6 == 0) [L507] int tmp_ndt_7; [L508] tmp_ndt_7 = __VERIFIER_nondet_int() [L509] COND TRUE tmp_ndt_7 == 1 [L518] returnVal2 = -1073741823 [L528] COND FALSE !(s == NP) [L532] COND FALSE !(s == MPR1) [L541] COND TRUE s == SKIP1 [L542] s = SKIP2 [L543] lowerDriverReturn = returnVal2 [L551] return (returnVal2); [L247] RET IofCallDriver(devExt__TopOfStack, Irp) [L248] status = 0 [L290] return (status); [L388] RET, EXPR KbFilter_PnP(devobj, pirp) [L388] status = KbFilter_PnP(devobj, pirp) [L412] COND FALSE !(pended == 1) [L420] COND FALSE !(pended == 1) [L428] COND TRUE s != UNLOADED [L429] COND TRUE status != -1 [L430] COND FALSE !(s != SKIP2) [L440] COND FALSE !(pended == 1) [L447] COND FALSE !(s == DC) [L452] COND TRUE status != lowerDriverReturn [L453] CALL errorFn() [L1013] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 19 procedures, 243 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.2s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9173 SdHoareTripleChecker+Valid, 9.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9153 mSDsluCounter, 11757 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6878 mSDsCounter, 1761 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15230 IncrementalHoareTripleChecker+Invalid, 16991 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1761 mSolverCounterUnsat, 4879 mSDtfsCounter, 15230 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=3, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 20 MinimizatonAttempts, 231 StatesRemovedByMinimization, 13 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! [2022-02-15 04:10:23,062 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...