/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:01:00,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:01:00,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:01:00,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:01:00,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:01:00,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:01:00,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:01:00,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:01:00,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:01:00,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:01:00,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:01:00,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:01:00,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:01:00,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:01:00,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:01:00,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:01:00,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:01:00,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:01:00,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:01:00,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:01:00,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:01:00,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:01:00,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:01:00,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:01:00,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:01:00,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:01:00,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:01:00,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:01:00,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:01:00,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:01:00,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:01:00,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:01:00,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:01:00,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:01:00,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:01:00,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:01:00,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:01:00,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:01:00,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:01:00,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:01:00,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:01:00,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:01:00,974 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:01:00,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:01:00,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:01:00,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:01:00,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:01:00,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:01:00,976 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:01:00,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:01:00,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:01:00,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:01:00,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:01:00,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:01:00,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:01:00,977 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:01:00,977 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:01:00,977 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:01:00,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:01:00,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:01:00,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:01:00,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:01:00,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:01:00,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:01:00,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:01:00,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:01:00,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:01:00,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:01:00,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:01:00,980 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:01:00,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:01:00,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:01:00,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:01:00,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:01:00,982 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:01:00,982 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:01:01,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:01:01,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:01:01,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:01:01,220 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:01:01,220 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:01:01,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product12.cil.c [2022-01-11 00:01:01,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c48ed8154/cedab036a2374c26a83ee6356a227497/FLAGbadfad110 [2022-01-11 00:01:01,701 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:01:01,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product12.cil.c [2022-01-11 00:01:01,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c48ed8154/cedab036a2374c26a83ee6356a227497/FLAGbadfad110 [2022-01-11 00:01:02,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c48ed8154/cedab036a2374c26a83ee6356a227497 [2022-01-11 00:01:02,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:01:02,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:01:02,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:01:02,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:01:02,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:01:02,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:01:02" (1/1) ... [2022-01-11 00:01:02,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab8754d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02, skipping insertion in model container [2022-01-11 00:01:02,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:01:02" (1/1) ... [2022-01-11 00:01:02,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:01:02,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:01:02,433 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product12.cil.c[29763,29776] [2022-01-11 00:01:02,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:01:02,491 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 00:01:02,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:01:02,531 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product12.cil.c[29763,29776] [2022-01-11 00:01:02,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:01:02,579 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:01:02,635 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product12.cil.c[29763,29776] [2022-01-11 00:01:02,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:01:02,685 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:01:02,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02 WrapperNode [2022-01-11 00:01:02,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:01:02,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:01:02,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:01:02,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:01:02,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02" (1/1) ... [2022-01-11 00:01:02,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02" (1/1) ... [2022-01-11 00:01:02,804 INFO L137 Inliner]: procedures = 125, calls = 191, calls flagged for inlining = 103, calls inlined = 115, statements flattened = 1742 [2022-01-11 00:01:02,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:01:02,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:01:02,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:01:02,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:01:02,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02" (1/1) ... [2022-01-11 00:01:02,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02" (1/1) ... [2022-01-11 00:01:02,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02" (1/1) ... [2022-01-11 00:01:02,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02" (1/1) ... [2022-01-11 00:01:02,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02" (1/1) ... [2022-01-11 00:01:02,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02" (1/1) ... [2022-01-11 00:01:02,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02" (1/1) ... [2022-01-11 00:01:02,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:01:02,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:01:02,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:01:02,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:01:02,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02" (1/1) ... [2022-01-11 00:01:02,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:01:02,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:01:02,916 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) [2022-01-11 00:01:02,949 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 [2022-01-11 00:01:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 00:01:02,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:01:02,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:01:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:01:02,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:01:03,164 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:01:03,166 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:01:03,859 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:01:03,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:01:03,867 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 00:01:03,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:01:03 BoogieIcfgContainer [2022-01-11 00:01:03,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:01:03,870 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:01:03,870 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:01:03,871 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:01:03,873 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:01:03" (1/1) ... [2022-01-11 00:01:04,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:01:04 BasicIcfg [2022-01-11 00:01:04,166 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:01:04,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:01:04,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:01:04,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:01:04,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:01:02" (1/4) ... [2022-01-11 00:01:04,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27337f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:01:04, skipping insertion in model container [2022-01-11 00:01:04,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:02" (2/4) ... [2022-01-11 00:01:04,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27337f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:01:04, skipping insertion in model container [2022-01-11 00:01:04,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:01:03" (3/4) ... [2022-01-11 00:01:04,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27337f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:01:04, skipping insertion in model container [2022-01-11 00:01:04,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:01:04" (4/4) ... [2022-01-11 00:01:04,174 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product12.cil.cTransformedIcfg [2022-01-11 00:01:04,179 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:01:04,179 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 00:01:04,225 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:01:04,229 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:01:04,230 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 00:01:04,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 419 states, 416 states have (on average 1.7043269230769231) internal successors, (709), 418 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-11 00:01:04,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:04,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:04,278 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:04,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:04,285 INFO L85 PathProgramCache]: Analyzing trace with hash -291370400, now seen corresponding path program 1 times [2022-01-11 00:01:04,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:04,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354643397] [2022-01-11 00:01:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:04,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:04,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:04,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354643397] [2022-01-11 00:01:04,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354643397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:04,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:04,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:01:04,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628257875] [2022-01-11 00:01:04,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:04,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:01:04,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:01:04,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:01:04,629 INFO L87 Difference]: Start difference. First operand has 419 states, 416 states have (on average 1.7043269230769231) internal successors, (709), 418 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:04,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:04,667 INFO L93 Difference]: Finished difference Result 582 states and 966 transitions. [2022-01-11 00:01:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:01:04,670 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-11 00:01:04,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:04,679 INFO L225 Difference]: With dead ends: 582 [2022-01-11 00:01:04,679 INFO L226 Difference]: Without dead ends: 374 [2022-01-11 00:01:04,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:01:04,684 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:04,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:04,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-01-11 00:01:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-01-11 00:01:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 372 states have (on average 1.7123655913978495) internal successors, (637), 373 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 637 transitions. [2022-01-11 00:01:04,728 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 637 transitions. Word has length 48 [2022-01-11 00:01:04,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:04,728 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 637 transitions. [2022-01-11 00:01:04,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 637 transitions. [2022-01-11 00:01:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-11 00:01:04,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:04,730 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] [2022-01-11 00:01:04,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:01:04,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:04,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:04,736 INFO L85 PathProgramCache]: Analyzing trace with hash 658410190, now seen corresponding path program 1 times [2022-01-11 00:01:04,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:04,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952286242] [2022-01-11 00:01:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:04,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:04,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:04,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952286242] [2022-01-11 00:01:04,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952286242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:04,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:04,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:01:04,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861349876] [2022-01-11 00:01:04,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:04,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:01:04,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:04,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:01:04,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:04,925 INFO L87 Difference]: Start difference. First operand 374 states and 637 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:04,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:04,944 INFO L93 Difference]: Finished difference Result 451 states and 756 transitions. [2022-01-11 00:01:04,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:01:04,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-01-11 00:01:04,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:04,946 INFO L225 Difference]: With dead ends: 451 [2022-01-11 00:01:04,946 INFO L226 Difference]: Without dead ends: 368 [2022-01-11 00:01:04,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:04,948 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 475 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:04,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 734 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:04,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-01-11 00:01:04,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-01-11 00:01:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.7111716621253406) internal successors, (628), 367 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 628 transitions. [2022-01-11 00:01:04,966 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 628 transitions. Word has length 49 [2022-01-11 00:01:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:04,966 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 628 transitions. [2022-01-11 00:01:04,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 628 transitions. [2022-01-11 00:01:04,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:01:04,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:04,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:04,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:01:04,969 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:04,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:04,969 INFO L85 PathProgramCache]: Analyzing trace with hash -254068767, now seen corresponding path program 1 times [2022-01-11 00:01:04,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:04,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398025874] [2022-01-11 00:01:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:04,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:05,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:05,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398025874] [2022-01-11 00:01:05,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398025874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:05,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:05,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:01:05,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990855588] [2022-01-11 00:01:05,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:05,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:01:05,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:05,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:01:05,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:05,158 INFO L87 Difference]: Start difference. First operand 368 states and 628 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:05,218 INFO L93 Difference]: Finished difference Result 717 states and 1228 transitions. [2022-01-11 00:01:05,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:01:05,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-11 00:01:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:05,221 INFO L225 Difference]: With dead ends: 717 [2022-01-11 00:01:05,221 INFO L226 Difference]: Without dead ends: 368 [2022-01-11 00:01:05,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:05,229 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 603 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:05,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 623 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:05,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-01-11 00:01:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-01-11 00:01:05,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.7057220708446867) internal successors, (626), 367 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 626 transitions. [2022-01-11 00:01:05,285 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 626 transitions. Word has length 82 [2022-01-11 00:01:05,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:05,285 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 626 transitions. [2022-01-11 00:01:05,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:05,285 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 626 transitions. [2022-01-11 00:01:05,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 00:01:05,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:05,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:05,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:01:05,294 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:05,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:05,295 INFO L85 PathProgramCache]: Analyzing trace with hash -337639327, now seen corresponding path program 1 times [2022-01-11 00:01:05,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:05,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453014526] [2022-01-11 00:01:05,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:05,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:05,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:05,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453014526] [2022-01-11 00:01:05,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453014526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:05,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:05,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:01:05,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263859849] [2022-01-11 00:01:05,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:05,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:01:05,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:05,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:01:05,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:01:05,424 INFO L87 Difference]: Start difference. First operand 368 states and 626 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:05,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:05,611 INFO L93 Difference]: Finished difference Result 1708 states and 2926 transitions. [2022-01-11 00:01:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:01:05,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-11 00:01:05,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:05,618 INFO L225 Difference]: With dead ends: 1708 [2022-01-11 00:01:05,618 INFO L226 Difference]: Without dead ends: 1364 [2022-01-11 00:01:05,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:01:05,628 INFO L933 BasicCegarLoop]: 1175 mSDtfsCounter, 2913 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 2925 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:05,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2913 Valid, 2925 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:01:05,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-01-11 00:01:05,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 368. [2022-01-11 00:01:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.7029972752043596) internal successors, (625), 367 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 625 transitions. [2022-01-11 00:01:05,659 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 625 transitions. Word has length 84 [2022-01-11 00:01:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:05,659 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 625 transitions. [2022-01-11 00:01:05,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:05,660 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 625 transitions. [2022-01-11 00:01:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 00:01:05,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:05,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:05,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:01:05,661 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:05,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2055278825, now seen corresponding path program 1 times [2022-01-11 00:01:05,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:05,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337400576] [2022-01-11 00:01:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:05,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:05,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:05,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337400576] [2022-01-11 00:01:05,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337400576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:05,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:05,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:01:05,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806205873] [2022-01-11 00:01:05,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:05,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:01:05,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:05,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:01:05,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:05,785 INFO L87 Difference]: Start difference. First operand 368 states and 625 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:05,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:05,820 INFO L93 Difference]: Finished difference Result 721 states and 1228 transitions. [2022-01-11 00:01:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:01:05,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-11 00:01:05,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:05,822 INFO L225 Difference]: With dead ends: 721 [2022-01-11 00:01:05,823 INFO L226 Difference]: Without dead ends: 382 [2022-01-11 00:01:05,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:05,824 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 604 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:05,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 661 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:05,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-01-11 00:01:05,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 368. [2022-01-11 00:01:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.7002724795640327) internal successors, (624), 367 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 624 transitions. [2022-01-11 00:01:05,847 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 624 transitions. Word has length 85 [2022-01-11 00:01:05,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:05,851 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 624 transitions. [2022-01-11 00:01:05,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:05,851 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 624 transitions. [2022-01-11 00:01:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 00:01:05,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:05,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:05,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:01:05,853 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:05,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:05,854 INFO L85 PathProgramCache]: Analyzing trace with hash -760900384, now seen corresponding path program 1 times [2022-01-11 00:01:05,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:05,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730493031] [2022-01-11 00:01:05,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:05,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:05,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:05,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730493031] [2022-01-11 00:01:05,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730493031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:05,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:05,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:01:05,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193343349] [2022-01-11 00:01:05,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:06,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:01:06,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:06,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:01:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:01:06,001 INFO L87 Difference]: Start difference. First operand 368 states and 624 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:06,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:06,139 INFO L93 Difference]: Finished difference Result 1038 states and 1772 transitions. [2022-01-11 00:01:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:01:06,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-11 00:01:06,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:06,143 INFO L225 Difference]: With dead ends: 1038 [2022-01-11 00:01:06,143 INFO L226 Difference]: Without dead ends: 704 [2022-01-11 00:01:06,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:01:06,145 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 2836 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:06,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2836 Valid, 1280 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:01:06,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-01-11 00:01:06,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 368. [2022-01-11 00:01:06,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.6948228882833787) internal successors, (622), 367 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:06,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 622 transitions. [2022-01-11 00:01:06,169 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 622 transitions. Word has length 86 [2022-01-11 00:01:06,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:06,170 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 622 transitions. [2022-01-11 00:01:06,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:06,170 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 622 transitions. [2022-01-11 00:01:06,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 00:01:06,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:06,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:06,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:01:06,175 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:06,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:06,176 INFO L85 PathProgramCache]: Analyzing trace with hash 138050595, now seen corresponding path program 1 times [2022-01-11 00:01:06,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:06,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667811103] [2022-01-11 00:01:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:06,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:06,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:06,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667811103] [2022-01-11 00:01:06,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667811103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:06,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:06,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 00:01:06,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798199294] [2022-01-11 00:01:06,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:06,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 00:01:06,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:06,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 00:01:06,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:01:06,338 INFO L87 Difference]: Start difference. First operand 368 states and 622 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:06,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:06,710 INFO L93 Difference]: Finished difference Result 1085 states and 1793 transitions. [2022-01-11 00:01:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 00:01:06,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 00:01:06,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:06,714 INFO L225 Difference]: With dead ends: 1085 [2022-01-11 00:01:06,715 INFO L226 Difference]: Without dead ends: 991 [2022-01-11 00:01:06,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-11 00:01:06,716 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 2574 mSDsluCounter, 4963 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2574 SdHoareTripleChecker+Valid, 5722 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:06,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2574 Valid, 5722 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:01:06,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-11 00:01:06,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 670. [2022-01-11 00:01:06,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 1.7130044843049328) internal successors, (1146), 669 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:06,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1146 transitions. [2022-01-11 00:01:06,761 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1146 transitions. Word has length 88 [2022-01-11 00:01:06,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:06,762 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 1146 transitions. [2022-01-11 00:01:06,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:06,762 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1146 transitions. [2022-01-11 00:01:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-11 00:01:06,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:06,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:06,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:01:06,764 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:06,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1963624012, now seen corresponding path program 1 times [2022-01-11 00:01:06,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:06,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942072676] [2022-01-11 00:01:06,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:06,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:06,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:06,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942072676] [2022-01-11 00:01:06,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942072676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:06,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:06,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:01:06,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944898116] [2022-01-11 00:01:06,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:06,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:01:06,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:06,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:01:06,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:01:06,839 INFO L87 Difference]: Start difference. First operand 670 states and 1146 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:06,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:06,887 INFO L93 Difference]: Finished difference Result 778 states and 1317 transitions. [2022-01-11 00:01:06,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:01:06,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-01-11 00:01:06,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:06,890 INFO L225 Difference]: With dead ends: 778 [2022-01-11 00:01:06,890 INFO L226 Difference]: Without dead ends: 670 [2022-01-11 00:01:06,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:01:06,891 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 351 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:06,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 1503 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:06,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-01-11 00:01:06,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2022-01-11 00:01:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 1.711509715994021) internal successors, (1145), 669 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:06,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1145 transitions. [2022-01-11 00:01:06,931 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1145 transitions. Word has length 89 [2022-01-11 00:01:06,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:06,932 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 1145 transitions. [2022-01-11 00:01:06,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:06,932 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1145 transitions. [2022-01-11 00:01:06,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-11 00:01:06,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:06,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:06,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:01:06,933 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:06,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:06,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1562173269, now seen corresponding path program 1 times [2022-01-11 00:01:06,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:06,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866436228] [2022-01-11 00:01:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:06,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:07,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:07,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866436228] [2022-01-11 00:01:07,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866436228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:07,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:07,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:01:07,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595906655] [2022-01-11 00:01:07,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:07,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:01:07,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:01:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:01:07,077 INFO L87 Difference]: Start difference. First operand 670 states and 1145 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:07,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:07,277 INFO L93 Difference]: Finished difference Result 1385 states and 2215 transitions. [2022-01-11 00:01:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:01:07,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-01-11 00:01:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:07,282 INFO L225 Difference]: With dead ends: 1385 [2022-01-11 00:01:07,282 INFO L226 Difference]: Without dead ends: 995 [2022-01-11 00:01:07,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:01:07,285 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 1821 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:07,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1821 Valid, 1725 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2022-01-11 00:01:07,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 700. [2022-01-11 00:01:07,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 699 states have (on average 1.698140200286123) internal successors, (1187), 699 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:07,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1187 transitions. [2022-01-11 00:01:07,336 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1187 transitions. Word has length 89 [2022-01-11 00:01:07,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:07,337 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1187 transitions. [2022-01-11 00:01:07,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:07,338 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1187 transitions. [2022-01-11 00:01:07,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-11 00:01:07,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:07,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:07,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:01:07,341 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:07,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:07,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1818368304, now seen corresponding path program 1 times [2022-01-11 00:01:07,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:07,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034076409] [2022-01-11 00:01:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:07,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:07,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:07,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034076409] [2022-01-11 00:01:07,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034076409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:07,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:07,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 00:01:07,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740416825] [2022-01-11 00:01:07,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:07,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 00:01:07,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 00:01:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:01:07,451 INFO L87 Difference]: Start difference. First operand 700 states and 1187 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:07,626 INFO L93 Difference]: Finished difference Result 902 states and 1487 transitions. [2022-01-11 00:01:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 00:01:07,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-11 00:01:07,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:07,629 INFO L225 Difference]: With dead ends: 902 [2022-01-11 00:01:07,629 INFO L226 Difference]: Without dead ends: 757 [2022-01-11 00:01:07,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-11 00:01:07,630 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1130 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:07,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1130 Valid, 3588 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:07,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-01-11 00:01:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 666. [2022-01-11 00:01:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.700751879699248) internal successors, (1131), 665 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1131 transitions. [2022-01-11 00:01:07,673 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1131 transitions. Word has length 90 [2022-01-11 00:01:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:07,673 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1131 transitions. [2022-01-11 00:01:07,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1131 transitions. [2022-01-11 00:01:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-11 00:01:07,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:07,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:07,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:01:07,675 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:07,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:07,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1490970636, now seen corresponding path program 1 times [2022-01-11 00:01:07,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:07,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619924510] [2022-01-11 00:01:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:07,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:07,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:07,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619924510] [2022-01-11 00:01:07,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619924510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:07,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:07,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:01:07,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204638299] [2022-01-11 00:01:07,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:07,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:01:07,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:07,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:01:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:01:07,774 INFO L87 Difference]: Start difference. First operand 666 states and 1131 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:07,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:07,921 INFO L93 Difference]: Finished difference Result 1516 states and 2534 transitions. [2022-01-11 00:01:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:01:07,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-01-11 00:01:07,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:07,926 INFO L225 Difference]: With dead ends: 1516 [2022-01-11 00:01:07,926 INFO L226 Difference]: Without dead ends: 1359 [2022-01-11 00:01:07,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:01:07,927 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 677 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 2547 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:07,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 2547 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2022-01-11 00:01:08,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1261. [2022-01-11 00:01:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1260 states have (on average 1.6992063492063492) internal successors, (2141), 1260 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:08,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 2141 transitions. [2022-01-11 00:01:08,015 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 2141 transitions. Word has length 93 [2022-01-11 00:01:08,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:08,015 INFO L470 AbstractCegarLoop]: Abstraction has 1261 states and 2141 transitions. [2022-01-11 00:01:08,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:08,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 2141 transitions. [2022-01-11 00:01:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-11 00:01:08,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:08,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:08,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:01:08,018 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:08,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1353464251, now seen corresponding path program 1 times [2022-01-11 00:01:08,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:08,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959389380] [2022-01-11 00:01:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:08,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:08,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:08,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959389380] [2022-01-11 00:01:08,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959389380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:08,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:08,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:01:08,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968178638] [2022-01-11 00:01:08,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:08,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:01:08,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:08,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:01:08,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:01:08,154 INFO L87 Difference]: Start difference. First operand 1261 states and 2141 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:08,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:08,410 INFO L93 Difference]: Finished difference Result 2477 states and 4068 transitions. [2022-01-11 00:01:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:01:08,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-01-11 00:01:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:08,418 INFO L225 Difference]: With dead ends: 2477 [2022-01-11 00:01:08,418 INFO L226 Difference]: Without dead ends: 2195 [2022-01-11 00:01:08,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:01:08,420 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 871 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:08,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 2705 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:01:08,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2022-01-11 00:01:08,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2003. [2022-01-11 00:01:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 1.6843156843156843) internal successors, (3372), 2002 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:08,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 3372 transitions. [2022-01-11 00:01:08,598 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 3372 transitions. Word has length 94 [2022-01-11 00:01:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:08,598 INFO L470 AbstractCegarLoop]: Abstraction has 2003 states and 3372 transitions. [2022-01-11 00:01:08,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 3372 transitions. [2022-01-11 00:01:08,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-11 00:01:08,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:08,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:08,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:01:08,602 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:08,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2124888162, now seen corresponding path program 1 times [2022-01-11 00:01:08,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:08,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048974018] [2022-01-11 00:01:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:08,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:08,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:08,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048974018] [2022-01-11 00:01:08,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048974018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:08,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:08,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:01:08,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879794027] [2022-01-11 00:01:08,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:08,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:01:08,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:08,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:01:08,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:01:08,715 INFO L87 Difference]: Start difference. First operand 2003 states and 3372 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:08,878 INFO L93 Difference]: Finished difference Result 2427 states and 3992 transitions. [2022-01-11 00:01:08,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:01:08,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-01-11 00:01:08,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:08,885 INFO L225 Difference]: With dead ends: 2427 [2022-01-11 00:01:08,885 INFO L226 Difference]: Without dead ends: 1840 [2022-01-11 00:01:08,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-11 00:01:08,887 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 1017 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:08,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 2013 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2022-01-11 00:01:09,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1815. [2022-01-11 00:01:09,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1814 states have (on average 1.7017640573318633) internal successors, (3087), 1814 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:09,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 3087 transitions. [2022-01-11 00:01:09,056 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 3087 transitions. Word has length 94 [2022-01-11 00:01:09,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:09,056 INFO L470 AbstractCegarLoop]: Abstraction has 1815 states and 3087 transitions. [2022-01-11 00:01:09,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:09,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 3087 transitions. [2022-01-11 00:01:09,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-11 00:01:09,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:09,061 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:09,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:01:09,061 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:09,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:09,062 INFO L85 PathProgramCache]: Analyzing trace with hash 819209533, now seen corresponding path program 1 times [2022-01-11 00:01:09,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:09,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868894535] [2022-01-11 00:01:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:09,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:09,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:09,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868894535] [2022-01-11 00:01:09,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868894535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:09,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:09,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:01:09,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579580371] [2022-01-11 00:01:09,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:09,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:01:09,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:09,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:01:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:09,133 INFO L87 Difference]: Start difference. First operand 1815 states and 3087 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:09,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:09,322 INFO L93 Difference]: Finished difference Result 5059 states and 8587 transitions. [2022-01-11 00:01:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:01:09,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-01-11 00:01:09,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:09,334 INFO L225 Difference]: With dead ends: 5059 [2022-01-11 00:01:09,334 INFO L226 Difference]: Without dead ends: 3281 [2022-01-11 00:01:09,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:09,338 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 546 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:09,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 1100 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:09,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-01-11 00:01:09,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 2805. [2022-01-11 00:01:09,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2804 states have (on average 1.731098430813124) internal successors, (4854), 2804 states have internal predecessors, (4854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 4854 transitions. [2022-01-11 00:01:09,525 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 4854 transitions. Word has length 111 [2022-01-11 00:01:09,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:09,525 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 4854 transitions. [2022-01-11 00:01:09,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:09,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 4854 transitions. [2022-01-11 00:01:09,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-11 00:01:09,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:09,531 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:09,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:01:09,532 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:09,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:09,532 INFO L85 PathProgramCache]: Analyzing trace with hash 912013626, now seen corresponding path program 1 times [2022-01-11 00:01:09,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:09,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198377549] [2022-01-11 00:01:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:09,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:09,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:09,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198377549] [2022-01-11 00:01:09,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198377549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:09,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:09,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:01:09,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946396650] [2022-01-11 00:01:09,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:09,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:01:09,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:09,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:01:09,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:09,595 INFO L87 Difference]: Start difference. First operand 2805 states and 4854 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:09,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:09,907 INFO L93 Difference]: Finished difference Result 8329 states and 14440 transitions. [2022-01-11 00:01:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:01:09,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-01-11 00:01:09,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:09,926 INFO L225 Difference]: With dead ends: 8329 [2022-01-11 00:01:09,926 INFO L226 Difference]: Without dead ends: 5561 [2022-01-11 00:01:09,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:09,933 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 544 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:09,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1194 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:09,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5561 states. [2022-01-11 00:01:10,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5561 to 5085. [2022-01-11 00:01:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5085 states, 5084 states have (on average 1.7572777340676633) internal successors, (8934), 5084 states have internal predecessors, (8934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:10,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5085 states to 5085 states and 8934 transitions. [2022-01-11 00:01:10,237 INFO L78 Accepts]: Start accepts. Automaton has 5085 states and 8934 transitions. Word has length 112 [2022-01-11 00:01:10,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:10,238 INFO L470 AbstractCegarLoop]: Abstraction has 5085 states and 8934 transitions. [2022-01-11 00:01:10,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5085 states and 8934 transitions. [2022-01-11 00:01:10,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-11 00:01:10,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:10,247 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:10,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:01:10,247 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:10,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:10,248 INFO L85 PathProgramCache]: Analyzing trace with hash -901205354, now seen corresponding path program 1 times [2022-01-11 00:01:10,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:10,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621767905] [2022-01-11 00:01:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:10,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:10,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:10,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621767905] [2022-01-11 00:01:10,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621767905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:10,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:10,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:01:10,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224897192] [2022-01-11 00:01:10,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:10,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:01:10,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:10,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:01:10,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:10,323 INFO L87 Difference]: Start difference. First operand 5085 states and 8934 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:10,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:10,857 INFO L93 Difference]: Finished difference Result 15037 states and 26464 transitions. [2022-01-11 00:01:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:01:10,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-01-11 00:01:10,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:10,888 INFO L225 Difference]: With dead ends: 15037 [2022-01-11 00:01:10,888 INFO L226 Difference]: Without dead ends: 9989 [2022-01-11 00:01:10,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:10,904 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 542 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:10,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 1186 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9989 states. [2022-01-11 00:01:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9989 to 9513. [2022-01-11 00:01:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9513 states, 9512 states have (on average 1.7731286795626577) internal successors, (16866), 9512 states have internal predecessors, (16866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9513 states to 9513 states and 16866 transitions. [2022-01-11 00:01:11,378 INFO L78 Accepts]: Start accepts. Automaton has 9513 states and 16866 transitions. Word has length 113 [2022-01-11 00:01:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:11,379 INFO L470 AbstractCegarLoop]: Abstraction has 9513 states and 16866 transitions. [2022-01-11 00:01:11,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:11,379 INFO L276 IsEmpty]: Start isEmpty. Operand 9513 states and 16866 transitions. [2022-01-11 00:01:11,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-11 00:01:11,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:11,397 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:11,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:01:11,397 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1617117367, now seen corresponding path program 1 times [2022-01-11 00:01:11,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:11,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50842079] [2022-01-11 00:01:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:11,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:01:11,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:11,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50842079] [2022-01-11 00:01:11,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50842079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:11,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:11,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:01:11,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794769906] [2022-01-11 00:01:11,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:11,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:01:11,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:01:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:01:11,545 INFO L87 Difference]: Start difference. First operand 9513 states and 16866 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:13,199 INFO L93 Difference]: Finished difference Result 37187 states and 66110 transitions. [2022-01-11 00:01:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:01:13,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-01-11 00:01:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:13,293 INFO L225 Difference]: With dead ends: 37187 [2022-01-11 00:01:13,293 INFO L226 Difference]: Without dead ends: 37058 [2022-01-11 00:01:13,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 00:01:13,305 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 2607 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2607 SdHoareTripleChecker+Valid, 3544 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:13,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2607 Valid, 3544 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:01:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37058 states. [2022-01-11 00:01:14,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37058 to 18769. [2022-01-11 00:01:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18769 states, 18768 states have (on average 1.7766410912190964) internal successors, (33344), 18768 states have internal predecessors, (33344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18769 states to 18769 states and 33344 transitions. [2022-01-11 00:01:14,352 INFO L78 Accepts]: Start accepts. Automaton has 18769 states and 33344 transitions. Word has length 114 [2022-01-11 00:01:14,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:14,353 INFO L470 AbstractCegarLoop]: Abstraction has 18769 states and 33344 transitions. [2022-01-11 00:01:14,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:14,353 INFO L276 IsEmpty]: Start isEmpty. Operand 18769 states and 33344 transitions. [2022-01-11 00:01:14,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-11 00:01:14,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:14,389 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:14,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:01:14,389 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:14,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1162775823, now seen corresponding path program 1 times [2022-01-11 00:01:14,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:14,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494170778] [2022-01-11 00:01:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:14,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:01:14,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:14,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494170778] [2022-01-11 00:01:14,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494170778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:14,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:14,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:01:14,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218342805] [2022-01-11 00:01:14,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:14,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:01:14,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:14,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:01:14,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:01:14,520 INFO L87 Difference]: Start difference. First operand 18769 states and 33344 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:18,036 INFO L93 Difference]: Finished difference Result 72753 states and 129824 transitions. [2022-01-11 00:01:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:01:18,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-01-11 00:01:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:18,207 INFO L225 Difference]: With dead ends: 72753 [2022-01-11 00:01:18,207 INFO L226 Difference]: Without dead ends: 72624 [2022-01-11 00:01:18,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 00:01:18,232 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 2478 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:18,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2478 Valid, 3095 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:01:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72624 states. [2022-01-11 00:01:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72624 to 37243. [2022-01-11 00:01:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37243 states, 37242 states have (on average 1.779174050802857) internal successors, (66260), 37242 states have internal predecessors, (66260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:20,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37243 states to 37243 states and 66260 transitions. [2022-01-11 00:01:20,848 INFO L78 Accepts]: Start accepts. Automaton has 37243 states and 66260 transitions. Word has length 115 [2022-01-11 00:01:20,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:20,848 INFO L470 AbstractCegarLoop]: Abstraction has 37243 states and 66260 transitions. [2022-01-11 00:01:20,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:20,848 INFO L276 IsEmpty]: Start isEmpty. Operand 37243 states and 66260 transitions. [2022-01-11 00:01:20,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-11 00:01:20,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:20,919 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:20,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:01:20,919 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:20,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:20,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1988551043, now seen corresponding path program 1 times [2022-01-11 00:01:20,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:20,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552852390] [2022-01-11 00:01:20,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:20,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:01:20,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:20,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552852390] [2022-01-11 00:01:20,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552852390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:20,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:20,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:01:20,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261064299] [2022-01-11 00:01:21,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:21,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:01:21,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:21,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:01:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:01:21,000 INFO L87 Difference]: Start difference. First operand 37243 states and 66260 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:25,047 INFO L93 Difference]: Finished difference Result 109481 states and 195056 transitions. [2022-01-11 00:01:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:01:25,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-01-11 00:01:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:25,210 INFO L225 Difference]: With dead ends: 109481 [2022-01-11 00:01:25,210 INFO L226 Difference]: Without dead ends: 72288 [2022-01-11 00:01:25,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:01:25,261 INFO L933 BasicCegarLoop]: 1102 mSDtfsCounter, 1739 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:25,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 1655 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:25,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72288 states. [2022-01-11 00:01:27,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72288 to 37243. [2022-01-11 00:01:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37243 states, 37242 states have (on average 1.7791203479942002) internal successors, (66258), 37242 states have internal predecessors, (66258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37243 states to 37243 states and 66258 transitions. [2022-01-11 00:01:27,710 INFO L78 Accepts]: Start accepts. Automaton has 37243 states and 66258 transitions. Word has length 115 [2022-01-11 00:01:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:27,711 INFO L470 AbstractCegarLoop]: Abstraction has 37243 states and 66258 transitions. [2022-01-11 00:01:27,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 37243 states and 66258 transitions. [2022-01-11 00:01:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-11 00:01:27,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:27,772 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:27,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:01:27,772 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:27,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:27,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1876277890, now seen corresponding path program 1 times [2022-01-11 00:01:27,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:27,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073605225] [2022-01-11 00:01:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:27,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:01:27,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:27,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073605225] [2022-01-11 00:01:27,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073605225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:27,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:27,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:01:27,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919375964] [2022-01-11 00:01:27,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:27,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:01:27,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:27,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:01:27,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:01:27,900 INFO L87 Difference]: Start difference. First operand 37243 states and 66258 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:30,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:30,001 INFO L93 Difference]: Finished difference Result 37243 states and 66258 transitions. [2022-01-11 00:01:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:01:30,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-01-11 00:01:30,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:30,002 INFO L225 Difference]: With dead ends: 37243 [2022-01-11 00:01:30,002 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 00:01:30,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:01:30,030 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 445 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:30,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 1607 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:30,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 00:01:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 00:01:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 00:01:30,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-01-11 00:01:30,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:30,031 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 00:01:30,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:30,031 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 00:01:30,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 00:01:30,033 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-11 00:01:30,034 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-11 00:01:30,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:01:30,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.