/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_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:05:53,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:05:53,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:05:53,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:05:53,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:05:53,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:05:53,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:05:53,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:05:53,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:05:53,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:05:53,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:05:53,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:05:53,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:05:53,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:05:53,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:05:53,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:05:53,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:05:53,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:05:53,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:05:53,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:05:53,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:05:53,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:05:53,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:05:53,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:05:53,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:05:53,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:05:53,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:05:53,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:05:53,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:05:53,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:05:53,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:05:53,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:05:53,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:05:53,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:05:53,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:05:53,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:05:53,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:05:53,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:05:53,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:05:53,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:05:53,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:05:53,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:05:53,902 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:05:53,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:05:53,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:05:53,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:05:53,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:05:53,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:05:53,904 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:05:53,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:05:53,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:05:53,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:05:53,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:05:53,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:05:53,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:05:53,905 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:05:53,905 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:05:53,905 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:05:53,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:05:53,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:05:53,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:05:53,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:05:53,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:05:53,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:05:53,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:05:53,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:05:53,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:05:53,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:05:53,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:05:53,907 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:05:53,907 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:05:53,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:05:53,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:05:53,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:05:53,908 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:05:53,908 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:05:54,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:05:54,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:05:54,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:05:54,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:05:54,126 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:05:54,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c [2022-01-10 18:05:54,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475a8c4de/ca3b0f992f464423a21d97687f073eba/FLAG40b7aa03b [2022-01-10 18:05:54,701 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:05:54,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c [2022-01-10 18:05:54,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475a8c4de/ca3b0f992f464423a21d97687f073eba/FLAG40b7aa03b [2022-01-10 18:05:55,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475a8c4de/ca3b0f992f464423a21d97687f073eba [2022-01-10 18:05:55,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:05:55,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:05:55,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:05:55,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:05:55,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:05:55,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:05:55" (1/1) ... [2022-01-10 18:05:55,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55, skipping insertion in model container [2022-01-10 18:05:55,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:05:55" (1/1) ... [2022-01-10 18:05:55,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:05:55,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:05:55,669 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_spec3_product33.cil.c[65706,65719] [2022-01-10 18:05:55,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:05:55,693 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:05:55,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:05:55,808 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_spec3_product33.cil.c[65706,65719] [2022-01-10 18:05:55,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:05:55,818 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:05:55,928 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_spec3_product33.cil.c[65706,65719] [2022-01-10 18:05:55,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:05:55,958 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:05:55,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55 WrapperNode [2022-01-10 18:05:55,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:05:55,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:05:55,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:05:55,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:05:55,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55" (1/1) ... [2022-01-10 18:05:55,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55" (1/1) ... [2022-01-10 18:05:56,078 INFO L137 Inliner]: procedures = 137, calls = 237, calls flagged for inlining = 142, calls inlined = 211, statements flattened = 3174 [2022-01-10 18:05:56,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:05:56,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:05:56,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:05:56,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:05:56,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55" (1/1) ... [2022-01-10 18:05:56,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55" (1/1) ... [2022-01-10 18:05:56,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55" (1/1) ... [2022-01-10 18:05:56,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55" (1/1) ... [2022-01-10 18:05:56,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55" (1/1) ... [2022-01-10 18:05:56,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55" (1/1) ... [2022-01-10 18:05:56,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55" (1/1) ... [2022-01-10 18:05:56,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:05:56,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:05:56,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:05:56,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:05:56,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55" (1/1) ... [2022-01-10 18:05:56,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:05:56,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:05:56,249 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) [2022-01-10 18:05:56,265 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 [2022-01-10 18:05:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:05:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:05:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:05:56,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:05:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:05:56,469 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:05:56,470 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:05:57,645 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:05:57,660 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:05:57,660 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:05:57,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:05:57 BoogieIcfgContainer [2022-01-10 18:05:57,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:05:57,666 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:05:57,666 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:05:57,667 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:05:57,669 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:05:57" (1/1) ... [2022-01-10 18:05:57,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:05:57 BasicIcfg [2022-01-10 18:05:57,964 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:05:57,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:05:57,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:05:57,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:05:57,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:05:55" (1/4) ... [2022-01-10 18:05:57,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3a1a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:05:57, skipping insertion in model container [2022-01-10 18:05:57,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:05:55" (2/4) ... [2022-01-10 18:05:57,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3a1a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:05:57, skipping insertion in model container [2022-01-10 18:05:57,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:05:57" (3/4) ... [2022-01-10 18:05:57,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3a1a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:05:57, skipping insertion in model container [2022-01-10 18:05:57,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:05:57" (4/4) ... [2022-01-10 18:05:57,969 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product33.cil.cTransformedIcfg [2022-01-10 18:05:57,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:05:57,974 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 18:05:58,022 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:05:58,026 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 [2022-01-10 18:05:58,027 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 18:05:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 689 states, 684 states have (on average 1.6769005847953216) internal successors, (1147), 688 states have internal predecessors, (1147), 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) [2022-01-10 18:05:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:05:58,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:58,066 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] [2022-01-10 18:05:58,067 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:58,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:58,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1581592154, now seen corresponding path program 1 times [2022-01-10 18:05:58,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:58,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012500989] [2022-01-10 18:05:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:58,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:58,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:58,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012500989] [2022-01-10 18:05:58,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012500989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:58,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:58,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:05:58,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692675003] [2022-01-10 18:05:58,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:58,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:05:58,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:58,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:05:58,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:05:58,456 INFO L87 Difference]: Start difference. First operand has 689 states, 684 states have (on average 1.6769005847953216) internal successors, (1147), 688 states have internal predecessors, (1147), 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 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2022-01-10 18:05:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:58,575 INFO L93 Difference]: Finished difference Result 1110 states and 1824 transitions. [2022-01-10 18:05:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:05:58,581 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 64 [2022-01-10 18:05:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:58,598 INFO L225 Difference]: With dead ends: 1110 [2022-01-10 18:05:58,598 INFO L226 Difference]: Without dead ends: 574 [2022-01-10 18:05:58,602 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 [2022-01-10 18:05:58,604 INFO L933 BasicCegarLoop]: 1137 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, 1137 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 [2022-01-10 18:05:58,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:58,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-01-10 18:05:58,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2022-01-10 18:05:58,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 570 states have (on average 1.6912280701754385) internal successors, (964), 573 states have internal predecessors, (964), 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) [2022-01-10 18:05:58,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 964 transitions. [2022-01-10 18:05:58,665 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 964 transitions. Word has length 64 [2022-01-10 18:05:58,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:58,665 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 964 transitions. [2022-01-10 18:05:58,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2022-01-10 18:05:58,666 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 964 transitions. [2022-01-10 18:05:58,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:05:58,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:58,668 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] [2022-01-10 18:05:58,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:05:58,668 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:58,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash -568362436, now seen corresponding path program 1 times [2022-01-10 18:05:58,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:58,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927285100] [2022-01-10 18:05:58,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:58,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:58,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:58,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927285100] [2022-01-10 18:05:58,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927285100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:58,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:58,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:05:58,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91079576] [2022-01-10 18:05:58,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:58,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:05:58,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:05:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:05:58,868 INFO L87 Difference]: Start difference. First operand 574 states and 964 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 18:05:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:58,936 INFO L93 Difference]: Finished difference Result 1129 states and 1900 transitions. [2022-01-10 18:05:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:05:58,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 18:05:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:58,939 INFO L225 Difference]: With dead ends: 1129 [2022-01-10 18:05:58,939 INFO L226 Difference]: Without dead ends: 574 [2022-01-10 18:05:58,941 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 [2022-01-10 18:05:58,942 INFO L933 BasicCegarLoop]: 944 mSDtfsCounter, 939 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:58,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 957 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-01-10 18:05:58,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2022-01-10 18:05:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 570 states have (on average 1.687719298245614) internal successors, (962), 573 states have internal predecessors, (962), 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) [2022-01-10 18:05:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 962 transitions. [2022-01-10 18:05:58,965 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 962 transitions. Word has length 65 [2022-01-10 18:05:58,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:58,965 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 962 transitions. [2022-01-10 18:05:58,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-01-10 18:05:58,965 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 962 transitions. [2022-01-10 18:05:58,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:05:58,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:58,967 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] [2022-01-10 18:05:58,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:05:58,967 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:58,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1511672644, now seen corresponding path program 1 times [2022-01-10 18:05:58,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:58,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4038754] [2022-01-10 18:05:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:58,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:59,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:59,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4038754] [2022-01-10 18:05:59,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4038754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:59,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:59,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:05:59,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125568225] [2022-01-10 18:05:59,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:59,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:05:59,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:59,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:05:59,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:05:59,093 INFO L87 Difference]: Start difference. First operand 574 states and 962 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-01-10 18:05:59,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:59,329 INFO L93 Difference]: Finished difference Result 2738 states and 4606 transitions. [2022-01-10 18:05:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:05:59,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2022-01-10 18:05:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:59,338 INFO L225 Difference]: With dead ends: 2738 [2022-01-10 18:05:59,338 INFO L226 Difference]: Without dead ends: 2188 [2022-01-10 18:05:59,343 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 [2022-01-10 18:05:59,346 INFO L933 BasicCegarLoop]: 1847 mSDtfsCounter, 4593 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4593 SdHoareTripleChecker+Valid, 4605 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 [2022-01-10 18:05:59,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4593 Valid, 4605 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:05:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2022-01-10 18:05:59,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 574. [2022-01-10 18:05:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 570 states have (on average 1.6859649122807017) internal successors, (961), 573 states have internal predecessors, (961), 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) [2022-01-10 18:05:59,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 961 transitions. [2022-01-10 18:05:59,390 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 961 transitions. Word has length 67 [2022-01-10 18:05:59,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:59,390 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 961 transitions. [2022-01-10 18:05:59,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-01-10 18:05:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 961 transitions. [2022-01-10 18:05:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:05:59,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:59,394 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] [2022-01-10 18:05:59,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:05:59,395 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:59,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:59,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1575638540, now seen corresponding path program 1 times [2022-01-10 18:05:59,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:59,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893048316] [2022-01-10 18:05:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:59,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:59,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:59,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893048316] [2022-01-10 18:05:59,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893048316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:59,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:59,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:05:59,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423931248] [2022-01-10 18:05:59,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:59,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:05:59,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:05:59,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:05:59,520 INFO L87 Difference]: Start difference. First operand 574 states and 961 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-01-10 18:05:59,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:59,566 INFO L93 Difference]: Finished difference Result 1133 states and 1900 transitions. [2022-01-10 18:05:59,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:05:59,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-01-10 18:05:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:59,570 INFO L225 Difference]: With dead ends: 1133 [2022-01-10 18:05:59,570 INFO L226 Difference]: Without dead ends: 588 [2022-01-10 18:05:59,571 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 [2022-01-10 18:05:59,579 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 940 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 997 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 [2022-01-10 18:05:59,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 997 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:59,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-01-10 18:05:59,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 574. [2022-01-10 18:05:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 570 states have (on average 1.6842105263157894) internal successors, (960), 573 states have internal predecessors, (960), 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) [2022-01-10 18:05:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 960 transitions. [2022-01-10 18:05:59,607 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 960 transitions. Word has length 68 [2022-01-10 18:05:59,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:59,608 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 960 transitions. [2022-01-10 18:05:59,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-01-10 18:05:59,608 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 960 transitions. [2022-01-10 18:05:59,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:05:59,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:59,609 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] [2022-01-10 18:05:59,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:05:59,610 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash 369613149, now seen corresponding path program 1 times [2022-01-10 18:05:59,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:59,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545022687] [2022-01-10 18:05:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:59,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:59,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:59,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545022687] [2022-01-10 18:05:59,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545022687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:59,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:59,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:05:59,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451400128] [2022-01-10 18:05:59,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:59,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:05:59,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:59,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:05:59,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:05:59,747 INFO L87 Difference]: Start difference. First operand 574 states and 960 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-01-10 18:05:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:59,899 INFO L93 Difference]: Finished difference Result 1656 states and 2780 transitions. [2022-01-10 18:05:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:05:59,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 69 [2022-01-10 18:05:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:59,904 INFO L225 Difference]: With dead ends: 1656 [2022-01-10 18:05:59,904 INFO L226 Difference]: Without dead ends: 1116 [2022-01-10 18:05:59,905 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 [2022-01-10 18:05:59,905 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 4516 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4516 SdHoareTripleChecker+Valid, 1952 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 [2022-01-10 18:05:59,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4516 Valid, 1952 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:05:59,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-01-10 18:05:59,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 574. [2022-01-10 18:05:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 570 states have (on average 1.6807017543859648) internal successors, (958), 573 states have internal predecessors, (958), 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) [2022-01-10 18:05:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 958 transitions. [2022-01-10 18:05:59,945 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 958 transitions. Word has length 69 [2022-01-10 18:05:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:59,949 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 958 transitions. [2022-01-10 18:05:59,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-01-10 18:05:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 958 transitions. [2022-01-10 18:05:59,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:05:59,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:59,951 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] [2022-01-10 18:05:59,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:05:59,952 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:59,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:59,952 INFO L85 PathProgramCache]: Analyzing trace with hash -794791238, now seen corresponding path program 1 times [2022-01-10 18:05:59,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:59,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102174110] [2022-01-10 18:05:59,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:59,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:00,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:00,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102174110] [2022-01-10 18:06:00,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102174110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:00,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:00,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:06:00,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245399771] [2022-01-10 18:06:00,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:00,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:06:00,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:00,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:06:00,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:06:00,080 INFO L87 Difference]: Start difference. First operand 574 states and 958 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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) [2022-01-10 18:06:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:00,749 INFO L93 Difference]: Finished difference Result 2912 states and 4702 transitions. [2022-01-10 18:06:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:06:00,750 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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 71 [2022-01-10 18:06:00,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:00,758 INFO L225 Difference]: With dead ends: 2912 [2022-01-10 18:06:00,758 INFO L226 Difference]: Without dead ends: 2634 [2022-01-10 18:06:00,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:06:00,759 INFO L933 BasicCegarLoop]: 1546 mSDtfsCounter, 7186 mSDsluCounter, 7511 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7186 SdHoareTripleChecker+Valid, 9057 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:00,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7186 Valid, 9057 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:06:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-01-10 18:06:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1029. [2022-01-10 18:06:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1025 states have (on average 1.6917073170731707) internal successors, (1734), 1028 states have internal predecessors, (1734), 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) [2022-01-10 18:06:00,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1734 transitions. [2022-01-10 18:06:00,821 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1734 transitions. Word has length 71 [2022-01-10 18:06:00,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:00,821 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 1734 transitions. [2022-01-10 18:06:00,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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) [2022-01-10 18:06:00,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1734 transitions. [2022-01-10 18:06:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:06:00,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:00,824 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] [2022-01-10 18:06:00,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:06:00,824 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:00,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash 872942665, now seen corresponding path program 1 times [2022-01-10 18:06:00,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:00,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845681494] [2022-01-10 18:06:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:00,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:00,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:00,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845681494] [2022-01-10 18:06:00,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845681494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:00,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:00,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:06:00,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390665202] [2022-01-10 18:06:00,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:00,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:06:00,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:00,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:06:00,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:06:00,902 INFO L87 Difference]: Start difference. First operand 1029 states and 1734 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2022-01-10 18:06:01,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:01,005 INFO L93 Difference]: Finished difference Result 1521 states and 2513 transitions. [2022-01-10 18:06:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:06:01,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2022-01-10 18:06:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:01,010 INFO L225 Difference]: With dead ends: 1521 [2022-01-10 18:06:01,010 INFO L226 Difference]: Without dead ends: 1217 [2022-01-10 18:06:01,010 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 [2022-01-10 18:06:01,011 INFO L933 BasicCegarLoop]: 952 mSDtfsCounter, 1221 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:01,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1221 Valid, 2110 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-01-10 18:06:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1029. [2022-01-10 18:06:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1025 states have (on average 1.6907317073170731) internal successors, (1733), 1028 states have internal predecessors, (1733), 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) [2022-01-10 18:06:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1733 transitions. [2022-01-10 18:06:01,074 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1733 transitions. Word has length 72 [2022-01-10 18:06:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:01,074 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 1733 transitions. [2022-01-10 18:06:01,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2022-01-10 18:06:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1733 transitions. [2022-01-10 18:06:01,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:06:01,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:01,078 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] [2022-01-10 18:06:01,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:06:01,078 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:01,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:01,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1696543734, now seen corresponding path program 1 times [2022-01-10 18:06:01,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:01,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186872113] [2022-01-10 18:06:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:01,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:01,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:01,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186872113] [2022-01-10 18:06:01,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186872113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:01,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:01,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:06:01,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551897809] [2022-01-10 18:06:01,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:01,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:01,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:01,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:01,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:01,174 INFO L87 Difference]: Start difference. First operand 1029 states and 1733 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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) [2022-01-10 18:06:01,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:01,521 INFO L93 Difference]: Finished difference Result 3658 states and 5891 transitions. [2022-01-10 18:06:01,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:06:01,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2022-01-10 18:06:01,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:01,531 INFO L225 Difference]: With dead ends: 3658 [2022-01-10 18:06:01,531 INFO L226 Difference]: Without dead ends: 3220 [2022-01-10 18:06:01,532 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 [2022-01-10 18:06:01,532 INFO L933 BasicCegarLoop]: 960 mSDtfsCounter, 3371 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3371 SdHoareTripleChecker+Valid, 4048 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:01,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3371 Valid, 4048 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:01,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2022-01-10 18:06:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 1595. [2022-01-10 18:06:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1591 states have (on average 1.6656191074795725) internal successors, (2650), 1594 states have internal predecessors, (2650), 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) [2022-01-10 18:06:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2650 transitions. [2022-01-10 18:06:01,693 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2650 transitions. Word has length 72 [2022-01-10 18:06:01,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:01,694 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 2650 transitions. [2022-01-10 18:06:01,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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) [2022-01-10 18:06:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2650 transitions. [2022-01-10 18:06:01,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:06:01,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:01,696 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] [2022-01-10 18:06:01,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:06:01,696 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:01,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:01,696 INFO L85 PathProgramCache]: Analyzing trace with hash -121632785, now seen corresponding path program 1 times [2022-01-10 18:06:01,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:01,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215046085] [2022-01-10 18:06:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:01,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:01,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:01,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215046085] [2022-01-10 18:06:01,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215046085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:01,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:01,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:06:01,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593410297] [2022-01-10 18:06:01,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:01,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:06:01,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:01,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:06:01,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:06:01,815 INFO L87 Difference]: Start difference. First operand 1595 states and 2650 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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) [2022-01-10 18:06:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:02,080 INFO L93 Difference]: Finished difference Result 2866 states and 4652 transitions. [2022-01-10 18:06:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:06:02,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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 73 [2022-01-10 18:06:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:02,087 INFO L225 Difference]: With dead ends: 2866 [2022-01-10 18:06:02,087 INFO L226 Difference]: Without dead ends: 2053 [2022-01-10 18:06:02,088 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 [2022-01-10 18:06:02,089 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 3313 mSDsluCounter, 3867 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3313 SdHoareTripleChecker+Valid, 4896 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:02,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3313 Valid, 4896 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:02,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2022-01-10 18:06:02,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1495. [2022-01-10 18:06:02,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1491 states have (on average 1.659289067739772) internal successors, (2474), 1494 states have internal predecessors, (2474), 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) [2022-01-10 18:06:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2474 transitions. [2022-01-10 18:06:02,214 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2474 transitions. Word has length 73 [2022-01-10 18:06:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:02,215 INFO L470 AbstractCegarLoop]: Abstraction has 1495 states and 2474 transitions. [2022-01-10 18:06:02,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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) [2022-01-10 18:06:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2474 transitions. [2022-01-10 18:06:02,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:06:02,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:02,217 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] [2022-01-10 18:06:02,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:06:02,217 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:02,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1444199594, now seen corresponding path program 1 times [2022-01-10 18:06:02,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:02,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880212061] [2022-01-10 18:06:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:02,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:02,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:02,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880212061] [2022-01-10 18:06:02,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880212061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:02,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:02,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:06:02,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612278441] [2022-01-10 18:06:02,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:02,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:02,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:02,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:02,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:02,311 INFO L87 Difference]: Start difference. First operand 1495 states and 2474 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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) [2022-01-10 18:06:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:02,785 INFO L93 Difference]: Finished difference Result 4732 states and 7513 transitions. [2022-01-10 18:06:02,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:06:02,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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 76 [2022-01-10 18:06:02,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:02,797 INFO L225 Difference]: With dead ends: 4732 [2022-01-10 18:06:02,797 INFO L226 Difference]: Without dead ends: 3951 [2022-01-10 18:06:02,798 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 [2022-01-10 18:06:02,799 INFO L933 BasicCegarLoop]: 1822 mSDtfsCounter, 2454 mSDsluCounter, 3876 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2454 SdHoareTripleChecker+Valid, 5698 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:02,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2454 Valid, 5698 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:02,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2022-01-10 18:06:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 2028. [2022-01-10 18:06:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2024 states have (on average 1.6358695652173914) internal successors, (3311), 2027 states have internal predecessors, (3311), 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) [2022-01-10 18:06:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 3311 transitions. [2022-01-10 18:06:02,975 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 3311 transitions. Word has length 76 [2022-01-10 18:06:02,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:02,975 INFO L470 AbstractCegarLoop]: Abstraction has 2028 states and 3311 transitions. [2022-01-10 18:06:02,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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) [2022-01-10 18:06:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 3311 transitions. [2022-01-10 18:06:02,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:06:02,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:02,977 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] [2022-01-10 18:06:02,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:06:02,977 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:02,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:02,978 INFO L85 PathProgramCache]: Analyzing trace with hash -593417596, now seen corresponding path program 1 times [2022-01-10 18:06:02,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:02,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952508263] [2022-01-10 18:06:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:02,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:03,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:03,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952508263] [2022-01-10 18:06:03,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952508263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:03,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:03,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:06:03,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601041483] [2022-01-10 18:06:03,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:03,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:06:03,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:03,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:06:03,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:06:03,083 INFO L87 Difference]: Start difference. First operand 2028 states and 3311 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 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) [2022-01-10 18:06:04,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:04,305 INFO L93 Difference]: Finished difference Result 8617 states and 13655 transitions. [2022-01-10 18:06:04,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:06:04,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 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 76 [2022-01-10 18:06:04,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:04,330 INFO L225 Difference]: With dead ends: 8617 [2022-01-10 18:06:04,331 INFO L226 Difference]: Without dead ends: 7688 [2022-01-10 18:06:04,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:06:04,334 INFO L933 BasicCegarLoop]: 1045 mSDtfsCounter, 9557 mSDsluCounter, 6311 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9557 SdHoareTripleChecker+Valid, 7356 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:04,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9557 Valid, 7356 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:06:04,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7688 states. [2022-01-10 18:06:04,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7688 to 3412. [2022-01-10 18:06:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3408 states have (on average 1.6428990610328638) internal successors, (5599), 3411 states have internal predecessors, (5599), 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) [2022-01-10 18:06:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5599 transitions. [2022-01-10 18:06:04,682 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5599 transitions. Word has length 76 [2022-01-10 18:06:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:04,682 INFO L470 AbstractCegarLoop]: Abstraction has 3412 states and 5599 transitions. [2022-01-10 18:06:04,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 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) [2022-01-10 18:06:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5599 transitions. [2022-01-10 18:06:04,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:06:04,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:04,685 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] [2022-01-10 18:06:04,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:06:04,685 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:04,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:04,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1624340357, now seen corresponding path program 1 times [2022-01-10 18:06:04,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:04,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862419283] [2022-01-10 18:06:04,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:04,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:04,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:04,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862419283] [2022-01-10 18:06:04,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862419283] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:04,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:04,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:06:04,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274581416] [2022-01-10 18:06:04,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:04,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:06:04,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:04,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:06:04,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:06:04,819 INFO L87 Difference]: Start difference. First operand 3412 states and 5599 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2022-01-10 18:06:07,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:07,817 INFO L93 Difference]: Finished difference Result 23433 states and 37107 transitions. [2022-01-10 18:06:07,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 18:06:07,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 76 [2022-01-10 18:06:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:07,858 INFO L225 Difference]: With dead ends: 23433 [2022-01-10 18:06:07,858 INFO L226 Difference]: Without dead ends: 21869 [2022-01-10 18:06:07,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-10 18:06:07,867 INFO L933 BasicCegarLoop]: 2385 mSDtfsCounter, 4985 mSDsluCounter, 9258 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4985 SdHoareTripleChecker+Valid, 11643 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:07,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4985 Valid, 11643 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:06:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21869 states. [2022-01-10 18:06:08,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21869 to 5849. [2022-01-10 18:06:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5849 states, 5845 states have (on average 1.6155688622754492) internal successors, (9443), 5848 states have internal predecessors, (9443), 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) [2022-01-10 18:06:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5849 states to 5849 states and 9443 transitions. [2022-01-10 18:06:08,699 INFO L78 Accepts]: Start accepts. Automaton has 5849 states and 9443 transitions. Word has length 76 [2022-01-10 18:06:08,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:08,699 INFO L470 AbstractCegarLoop]: Abstraction has 5849 states and 9443 transitions. [2022-01-10 18:06:08,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2022-01-10 18:06:08,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5849 states and 9443 transitions. [2022-01-10 18:06:08,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:06:08,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:08,703 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] [2022-01-10 18:06:08,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:06:08,704 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:08,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:08,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1888686356, now seen corresponding path program 1 times [2022-01-10 18:06:08,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:08,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015164007] [2022-01-10 18:06:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:08,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:08,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:08,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015164007] [2022-01-10 18:06:08,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015164007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:08,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:08,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:06:08,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330463048] [2022-01-10 18:06:08,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:08,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:06:08,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:08,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:06:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:06:08,823 INFO L87 Difference]: Start difference. First operand 5849 states and 9443 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2022-01-10 18:06:12,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:12,477 INFO L93 Difference]: Finished difference Result 36530 states and 58677 transitions. [2022-01-10 18:06:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:06:12,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 77 [2022-01-10 18:06:12,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:12,543 INFO L225 Difference]: With dead ends: 36530 [2022-01-10 18:06:12,543 INFO L226 Difference]: Without dead ends: 33416 [2022-01-10 18:06:12,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:06:12,557 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 5235 mSDsluCounter, 4513 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5235 SdHoareTripleChecker+Valid, 6058 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:12,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5235 Valid, 6058 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:12,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33416 states. [2022-01-10 18:06:13,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33416 to 11647. [2022-01-10 18:06:13,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11647 states, 11643 states have (on average 1.6146182255432449) internal successors, (18799), 11646 states have internal predecessors, (18799), 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) [2022-01-10 18:06:13,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11647 states to 11647 states and 18799 transitions. [2022-01-10 18:06:13,938 INFO L78 Accepts]: Start accepts. Automaton has 11647 states and 18799 transitions. Word has length 77 [2022-01-10 18:06:13,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:13,939 INFO L470 AbstractCegarLoop]: Abstraction has 11647 states and 18799 transitions. [2022-01-10 18:06:13,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2022-01-10 18:06:13,939 INFO L276 IsEmpty]: Start isEmpty. Operand 11647 states and 18799 transitions. [2022-01-10 18:06:13,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:06:13,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:13,947 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] [2022-01-10 18:06:13,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:06:13,947 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:13,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:13,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1516566620, now seen corresponding path program 1 times [2022-01-10 18:06:13,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:13,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135196507] [2022-01-10 18:06:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:13,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:14,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:14,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135196507] [2022-01-10 18:06:14,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135196507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:14,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:14,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:14,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930818196] [2022-01-10 18:06:14,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:14,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:14,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:14,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:14,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:14,022 INFO L87 Difference]: Start difference. First operand 11647 states and 18799 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2022-01-10 18:06:16,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:16,183 INFO L93 Difference]: Finished difference Result 23823 states and 38092 transitions. [2022-01-10 18:06:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:06:16,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2022-01-10 18:06:16,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:16,216 INFO L225 Difference]: With dead ends: 23823 [2022-01-10 18:06:16,216 INFO L226 Difference]: Without dead ends: 18518 [2022-01-10 18:06:16,225 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 [2022-01-10 18:06:16,226 INFO L933 BasicCegarLoop]: 982 mSDtfsCounter, 2576 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:16,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2576 Valid, 2281 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18518 states. [2022-01-10 18:06:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18518 to 11647. [2022-01-10 18:06:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11647 states, 11643 states have (on average 1.6129004552091386) internal successors, (18779), 11646 states have internal predecessors, (18779), 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) [2022-01-10 18:06:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11647 states to 11647 states and 18779 transitions. [2022-01-10 18:06:17,520 INFO L78 Accepts]: Start accepts. Automaton has 11647 states and 18779 transitions. Word has length 77 [2022-01-10 18:06:17,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:17,520 INFO L470 AbstractCegarLoop]: Abstraction has 11647 states and 18779 transitions. [2022-01-10 18:06:17,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2022-01-10 18:06:17,521 INFO L276 IsEmpty]: Start isEmpty. Operand 11647 states and 18779 transitions. [2022-01-10 18:06:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 18:06:17,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:17,528 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] [2022-01-10 18:06:17,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:06:17,529 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:17,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:17,529 INFO L85 PathProgramCache]: Analyzing trace with hash -997279023, now seen corresponding path program 1 times [2022-01-10 18:06:17,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:17,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312520267] [2022-01-10 18:06:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:17,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:17,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:17,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312520267] [2022-01-10 18:06:17,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312520267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:17,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:17,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:06:17,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278347951] [2022-01-10 18:06:17,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:17,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:06:17,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:17,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:06:17,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:06:17,628 INFO L87 Difference]: Start difference. First operand 11647 states and 18779 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 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) [2022-01-10 18:06:22,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:22,113 INFO L93 Difference]: Finished difference Result 31883 states and 49741 transitions. [2022-01-10 18:06:22,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:06:22,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 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 78 [2022-01-10 18:06:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:22,168 INFO L225 Difference]: With dead ends: 31883 [2022-01-10 18:06:22,168 INFO L226 Difference]: Without dead ends: 28716 [2022-01-10 18:06:22,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-01-10 18:06:22,181 INFO L933 BasicCegarLoop]: 2124 mSDtfsCounter, 3653 mSDsluCounter, 7880 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3653 SdHoareTripleChecker+Valid, 10004 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:22,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3653 Valid, 10004 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:06:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28716 states. [2022-01-10 18:06:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28716 to 12214. [2022-01-10 18:06:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12214 states, 12210 states have (on average 1.611875511875512) internal successors, (19681), 12213 states have internal predecessors, (19681), 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) [2022-01-10 18:06:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12214 states to 12214 states and 19681 transitions. [2022-01-10 18:06:23,732 INFO L78 Accepts]: Start accepts. Automaton has 12214 states and 19681 transitions. Word has length 78 [2022-01-10 18:06:23,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:23,732 INFO L470 AbstractCegarLoop]: Abstraction has 12214 states and 19681 transitions. [2022-01-10 18:06:23,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 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) [2022-01-10 18:06:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 12214 states and 19681 transitions. [2022-01-10 18:06:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 18:06:23,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:23,741 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] [2022-01-10 18:06:23,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:06:23,741 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:23,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:23,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1392966113, now seen corresponding path program 1 times [2022-01-10 18:06:23,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:23,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269972050] [2022-01-10 18:06:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:23,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:23,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:23,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:23,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269972050] [2022-01-10 18:06:23,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269972050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:23,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:23,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:06:23,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984786111] [2022-01-10 18:06:23,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:23,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:06:23,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:23,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:06:23,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:06:23,869 INFO L87 Difference]: Start difference. First operand 12214 states and 19681 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2022-01-10 18:06:30,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:30,226 INFO L93 Difference]: Finished difference Result 46166 states and 72311 transitions. [2022-01-10 18:06:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 18:06:30,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 78 [2022-01-10 18:06:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:30,290 INFO L225 Difference]: With dead ends: 46166 [2022-01-10 18:06:30,290 INFO L226 Difference]: Without dead ends: 40404 [2022-01-10 18:06:30,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-01-10 18:06:30,317 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 9819 mSDsluCounter, 3911 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9819 SdHoareTripleChecker+Valid, 4933 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:30,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9819 Valid, 4933 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:30,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40404 states. [2022-01-10 18:06:32,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40404 to 13225. [2022-01-10 18:06:32,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13225 states, 13221 states have (on average 1.606383783374934) internal successors, (21238), 13224 states have internal predecessors, (21238), 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) [2022-01-10 18:06:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13225 states to 13225 states and 21238 transitions. [2022-01-10 18:06:32,818 INFO L78 Accepts]: Start accepts. Automaton has 13225 states and 21238 transitions. Word has length 78 [2022-01-10 18:06:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:32,819 INFO L470 AbstractCegarLoop]: Abstraction has 13225 states and 21238 transitions. [2022-01-10 18:06:32,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2022-01-10 18:06:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 13225 states and 21238 transitions. [2022-01-10 18:06:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 18:06:32,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:32,829 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] [2022-01-10 18:06:32,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:06:32,829 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:32,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:32,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1522048832, now seen corresponding path program 1 times [2022-01-10 18:06:32,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:32,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70336444] [2022-01-10 18:06:32,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:32,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:32,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:32,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70336444] [2022-01-10 18:06:32,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70336444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:32,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:32,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 18:06:32,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985892721] [2022-01-10 18:06:32,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:32,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:06:32,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:32,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:06:32,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:06:32,974 INFO L87 Difference]: Start difference. First operand 13225 states and 21238 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 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) [2022-01-10 18:06:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:47,336 INFO L93 Difference]: Finished difference Result 55877 states and 85620 transitions. [2022-01-10 18:06:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-10 18:06:47,337 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 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 78 [2022-01-10 18:06:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:47,451 INFO L225 Difference]: With dead ends: 55877 [2022-01-10 18:06:47,451 INFO L226 Difference]: Without dead ends: 52996 [2022-01-10 18:06:47,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=501, Invalid=1391, Unknown=0, NotChecked=0, Total=1892 [2022-01-10 18:06:47,471 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 8652 mSDsluCounter, 10291 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8652 SdHoareTripleChecker+Valid, 11795 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:47,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8652 Valid, 11795 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:06:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52996 states. [2022-01-10 18:06:50,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52996 to 13676. [2022-01-10 18:06:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13676 states, 13672 states have (on average 1.6062024575775307) internal successors, (21960), 13675 states have internal predecessors, (21960), 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) [2022-01-10 18:06:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13676 states to 13676 states and 21960 transitions. [2022-01-10 18:06:50,535 INFO L78 Accepts]: Start accepts. Automaton has 13676 states and 21960 transitions. Word has length 78 [2022-01-10 18:06:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:50,535 INFO L470 AbstractCegarLoop]: Abstraction has 13676 states and 21960 transitions. [2022-01-10 18:06:50,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 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) [2022-01-10 18:06:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 13676 states and 21960 transitions. [2022-01-10 18:06:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 18:06:50,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:50,545 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] [2022-01-10 18:06:50,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:06:50,545 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:50,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:50,546 INFO L85 PathProgramCache]: Analyzing trace with hash -819307562, now seen corresponding path program 1 times [2022-01-10 18:06:50,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:50,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969490395] [2022-01-10 18:06:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:50,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:50,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:50,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969490395] [2022-01-10 18:06:50,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969490395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:50,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:50,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:06:50,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900706470] [2022-01-10 18:06:50,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:50,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:06:50,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:50,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:06:50,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:06:50,666 INFO L87 Difference]: Start difference. First operand 13676 states and 21960 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2022-01-10 18:06:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:53,834 INFO L93 Difference]: Finished difference Result 16874 states and 26755 transitions. [2022-01-10 18:06:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:06:53,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 79 [2022-01-10 18:06:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:53,856 INFO L225 Difference]: With dead ends: 16874 [2022-01-10 18:06:53,856 INFO L226 Difference]: Without dead ends: 13782 [2022-01-10 18:06:53,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:53,867 INFO L933 BasicCegarLoop]: 948 mSDtfsCounter, 1209 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:53,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 2105 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:53,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13782 states. [2022-01-10 18:06:56,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13782 to 11522. [2022-01-10 18:06:56,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11522 states, 11518 states have (on average 1.6082653238409446) internal successors, (18524), 11521 states have internal predecessors, (18524), 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) [2022-01-10 18:06:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11522 states to 11522 states and 18524 transitions. [2022-01-10 18:06:56,409 INFO L78 Accepts]: Start accepts. Automaton has 11522 states and 18524 transitions. Word has length 79 [2022-01-10 18:06:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:56,409 INFO L470 AbstractCegarLoop]: Abstraction has 11522 states and 18524 transitions. [2022-01-10 18:06:56,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2022-01-10 18:06:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 11522 states and 18524 transitions. [2022-01-10 18:06:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 18:06:56,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:56,416 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] [2022-01-10 18:06:56,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:06:56,417 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:06:56,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash -30568279, now seen corresponding path program 1 times [2022-01-10 18:06:56,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:56,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105936547] [2022-01-10 18:06:56,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:56,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:56,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:56,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105936547] [2022-01-10 18:06:56,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105936547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:56,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:56,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:06:56,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111103917] [2022-01-10 18:06:56,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:56,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:06:56,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:56,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:06:56,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:06:56,608 INFO L87 Difference]: Start difference. First operand 11522 states and 18524 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 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)