/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec6_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:58:04,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:58:04,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:58:04,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:58:04,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:58:04,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:58:04,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:58:04,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:58:04,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:58:04,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:58:04,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:58:04,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:58:04,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:58:04,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:58:04,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:58:04,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:58:04,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:58:04,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:58:04,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:58:04,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:58:04,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:58:04,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:58:04,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:58:04,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:58:04,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:58:04,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:58:04,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:58:04,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:58:04,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:58:04,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:58:04,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:58:04,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:58:04,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:58:04,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:58:04,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:58:04,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:58:04,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:58:04,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:58:04,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:58:04,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:58:04,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:58:04,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:58:04,860 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:58:04,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:58:04,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:58:04,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:58:04,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:58:04,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:58:04,862 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:58:04,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:58:04,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:58:04,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:58:04,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:58:04,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:58:04,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:58:04,863 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:58:04,863 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:58:04,863 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:58:04,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:58:04,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:58:04,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:58:04,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:58:04,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:58:04,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:58:04,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:58:04,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:58:04,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:58:04,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:58:04,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:58:04,865 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:58:04,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:58:04,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:58:04,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:58:04,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:58:04,866 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:58:04,866 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:58:05,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:58:05,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:58:05,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:58:05,066 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:58:05,067 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:58:05,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product30.cil.c [2022-01-10 23:58:05,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71871e7b/69bd3eba96ec4c93897a5e8d445fe978/FLAGc2d221a42 [2022-01-10 23:58:05,529 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:58:05,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product30.cil.c [2022-01-10 23:58:05,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71871e7b/69bd3eba96ec4c93897a5e8d445fe978/FLAGc2d221a42 [2022-01-10 23:58:05,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71871e7b/69bd3eba96ec4c93897a5e8d445fe978 [2022-01-10 23:58:05,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:58:05,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:58:05,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:58:05,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:58:05,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:58:05,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:58:05" (1/1) ... [2022-01-10 23:58:05,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@584bd014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:05, skipping insertion in model container [2022-01-10 23:58:05,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:58:05" (1/1) ... [2022-01-10 23:58:05,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:58:05,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:58:06,434 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_spec6_product30.cil.c[64728,64741] [2022-01-10 23:58:06,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:58:06,444 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:58:06,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:58:06,530 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_spec6_product30.cil.c[64728,64741] [2022-01-10 23:58:06,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:58:06,540 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:58:06,596 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_spec6_product30.cil.c[64728,64741] [2022-01-10 23:58:06,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:58:06,617 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:58:06,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:06 WrapperNode [2022-01-10 23:58:06,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:58:06,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:58:06,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:58:06,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:58:06,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:06" (1/1) ... [2022-01-10 23:58:06,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:06" (1/1) ... [2022-01-10 23:58:06,767 INFO L137 Inliner]: procedures = 134, calls = 225, calls flagged for inlining = 132, calls inlined = 165, statements flattened = 2487 [2022-01-10 23:58:06,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:58:06,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:58:06,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:58:06,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:58:06,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:06" (1/1) ... [2022-01-10 23:58:06,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:06" (1/1) ... [2022-01-10 23:58:06,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:06" (1/1) ... [2022-01-10 23:58:06,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:06" (1/1) ... [2022-01-10 23:58:06,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:06" (1/1) ... [2022-01-10 23:58:06,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:06" (1/1) ... [2022-01-10 23:58:06,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:06" (1/1) ... [2022-01-10 23:58:06,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:58:06,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:58:06,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:58:06,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:58:06,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:06" (1/1) ... [2022-01-10 23:58:06,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:58:06,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:58:06,903 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 23:58:06,907 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 23:58:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:58:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:58:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:58:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:58:06,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:58:07,287 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:58:07,288 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:58:08,259 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:58:08,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:58:08,267 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:58:08,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:58:08 BoogieIcfgContainer [2022-01-10 23:58:08,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:58:08,270 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:58:08,270 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:58:08,271 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:58:08,273 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:58:08" (1/1) ... [2022-01-10 23:58:08,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:58:08 BasicIcfg [2022-01-10 23:58:08,562 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:58:08,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:58:08,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:58:08,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:58:08,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:58:05" (1/4) ... [2022-01-10 23:58:08,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2465e032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:58:08, skipping insertion in model container [2022-01-10 23:58:08,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:06" (2/4) ... [2022-01-10 23:58:08,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2465e032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:58:08, skipping insertion in model container [2022-01-10 23:58:08,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:58:08" (3/4) ... [2022-01-10 23:58:08,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2465e032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:58:08, skipping insertion in model container [2022-01-10 23:58:08,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:58:08" (4/4) ... [2022-01-10 23:58:08,568 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product30.cil.cTransformedIcfg [2022-01-10 23:58:08,574 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:58:08,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:58:08,619 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:58:08,627 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 23:58:08,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:58:08,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 568 states, 565 states have (on average 1.6902654867256637) internal successors, (955), 567 states have internal predecessors, (955), 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 23:58:08,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 23:58:08,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:08,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:58:08,662 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:08,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:08,665 INFO L85 PathProgramCache]: Analyzing trace with hash -92411027, now seen corresponding path program 1 times [2022-01-10 23:58:08,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:08,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815596966] [2022-01-10 23:58:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:08,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:08,990 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 23:58:08,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:08,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815596966] [2022-01-10 23:58:08,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815596966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:08,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:08,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:58:08,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756185655] [2022-01-10 23:58:08,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:08,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:58:08,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:09,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:58:09,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:58:09,021 INFO L87 Difference]: Start difference. First operand has 568 states, 565 states have (on average 1.6902654867256637) internal successors, (955), 567 states have internal predecessors, (955), 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 30.5) internal successors, (61), 2 states have internal predecessors, (61), 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 23:58:09,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:09,070 INFO L93 Difference]: Finished difference Result 875 states and 1450 transitions. [2022-01-10 23:58:09,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:58:09,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2022-01-10 23:58:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:09,095 INFO L225 Difference]: With dead ends: 875 [2022-01-10 23:58:09,096 INFO L226 Difference]: Without dead ends: 477 [2022-01-10 23:58:09,101 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 23:58:09,104 INFO L933 BasicCegarLoop]: 949 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, 949 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 23:58:09,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:58:09,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-10 23:58:09,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2022-01-10 23:58:09,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.6989473684210525) internal successors, (807), 476 states have internal predecessors, (807), 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 23:58:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 807 transitions. [2022-01-10 23:58:09,150 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 807 transitions. Word has length 61 [2022-01-10 23:58:09,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:09,150 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 807 transitions. [2022-01-10 23:58:09,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 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 23:58:09,150 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 807 transitions. [2022-01-10 23:58:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:58:09,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:09,153 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] [2022-01-10 23:58:09,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:58:09,153 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:09,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2102020129, now seen corresponding path program 1 times [2022-01-10 23:58:09,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:09,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208327785] [2022-01-10 23:58:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:09,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:09,305 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 23:58:09,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:09,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208327785] [2022-01-10 23:58:09,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208327785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:09,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:09,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:58:09,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696055828] [2022-01-10 23:58:09,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:09,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:58:09,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:09,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:58:09,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:58:09,311 INFO L87 Difference]: Start difference. First operand 477 states and 807 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 23:58:09,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:09,395 INFO L93 Difference]: Finished difference Result 935 states and 1586 transitions. [2022-01-10 23:58:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:58:09,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-01-10 23:58:09,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:09,398 INFO L225 Difference]: With dead ends: 935 [2022-01-10 23:58:09,398 INFO L226 Difference]: Without dead ends: 477 [2022-01-10 23:58:09,400 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 23:58:09,401 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 782 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:58:09,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 801 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:58:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-10 23:58:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2022-01-10 23:58:09,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.694736842105263) internal successors, (805), 476 states have internal predecessors, (805), 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 23:58:09,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 805 transitions. [2022-01-10 23:58:09,471 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 805 transitions. Word has length 62 [2022-01-10 23:58:09,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:09,471 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 805 transitions. [2022-01-10 23:58:09,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 23:58:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 805 transitions. [2022-01-10 23:58:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:58:09,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:09,474 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 23:58:09,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:58:09,474 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:09,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1625199713, now seen corresponding path program 1 times [2022-01-10 23:58:09,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:09,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619733230] [2022-01-10 23:58:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:09,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:09,626 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 23:58:09,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:09,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619733230] [2022-01-10 23:58:09,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619733230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:09,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:09,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:58:09,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308419055] [2022-01-10 23:58:09,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:09,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:58:09,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:09,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:58:09,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:58:09,629 INFO L87 Difference]: Start difference. First operand 477 states and 805 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 23:58:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:09,797 INFO L93 Difference]: Finished difference Result 2253 states and 3821 transitions. [2022-01-10 23:58:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:58:09,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 23:58:09,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:09,805 INFO L225 Difference]: With dead ends: 2253 [2022-01-10 23:58:09,805 INFO L226 Difference]: Without dead ends: 1800 [2022-01-10 23:58:09,809 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 23:58:09,811 INFO L933 BasicCegarLoop]: 1533 mSDtfsCounter, 3808 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3808 SdHoareTripleChecker+Valid, 3820 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 23:58:09,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3808 Valid, 3820 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:58:09,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2022-01-10 23:58:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 477. [2022-01-10 23:58:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.6926315789473685) internal successors, (804), 476 states have internal predecessors, (804), 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 23:58:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 804 transitions. [2022-01-10 23:58:09,836 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 804 transitions. Word has length 64 [2022-01-10 23:58:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:09,836 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 804 transitions. [2022-01-10 23:58:09,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 23:58:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 804 transitions. [2022-01-10 23:58:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:58:09,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:09,839 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 23:58:09,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:58:09,840 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:09,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1646181561, now seen corresponding path program 1 times [2022-01-10 23:58:09,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:09,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220935011] [2022-01-10 23:58:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:09,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:09,948 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 23:58:09,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:09,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220935011] [2022-01-10 23:58:09,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220935011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:09,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:09,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:58:09,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980723657] [2022-01-10 23:58:09,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:09,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:58:09,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:58:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:58:09,952 INFO L87 Difference]: Start difference. First operand 477 states and 804 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 23:58:09,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:09,994 INFO L93 Difference]: Finished difference Result 939 states and 1586 transitions. [2022-01-10 23:58:09,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:58:09,995 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 23:58:09,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:09,997 INFO L225 Difference]: With dead ends: 939 [2022-01-10 23:58:09,998 INFO L226 Difference]: Without dead ends: 491 [2022-01-10 23:58:09,998 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 23:58:09,999 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 783 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 840 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 23:58:09,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 840 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:58:10,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-01-10 23:58:10,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 477. [2022-01-10 23:58:10,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.6905263157894737) internal successors, (803), 476 states have internal predecessors, (803), 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 23:58:10,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 803 transitions. [2022-01-10 23:58:10,033 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 803 transitions. Word has length 65 [2022-01-10 23:58:10,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:10,033 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 803 transitions. [2022-01-10 23:58:10,033 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 23:58:10,034 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 803 transitions. [2022-01-10 23:58:10,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:58:10,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:10,035 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] [2022-01-10 23:58:10,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:58:10,036 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:10,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:10,038 INFO L85 PathProgramCache]: Analyzing trace with hash 651452960, now seen corresponding path program 1 times [2022-01-10 23:58:10,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:10,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472623466] [2022-01-10 23:58:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:10,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:10,166 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 23:58:10,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:10,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472623466] [2022-01-10 23:58:10,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472623466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:10,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:10,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:58:10,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122979703] [2022-01-10 23:58:10,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:10,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:58:10,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:10,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:58:10,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:58:10,169 INFO L87 Difference]: Start difference. First operand 477 states and 803 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 23:58:10,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:10,291 INFO L93 Difference]: Finished difference Result 1365 states and 2309 transitions. [2022-01-10 23:58:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:58:10,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2022-01-10 23:58:10,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:10,294 INFO L225 Difference]: With dead ends: 1365 [2022-01-10 23:58:10,295 INFO L226 Difference]: Without dead ends: 922 [2022-01-10 23:58:10,295 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 23:58:10,296 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 3731 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3731 SdHoareTripleChecker+Valid, 1638 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 23:58:10,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3731 Valid, 1638 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:58:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-01-10 23:58:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 477. [2022-01-10 23:58:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.6863157894736842) internal successors, (801), 476 states have internal predecessors, (801), 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 23:58:10,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 801 transitions. [2022-01-10 23:58:10,324 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 801 transitions. Word has length 66 [2022-01-10 23:58:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:10,327 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 801 transitions. [2022-01-10 23:58:10,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 23:58:10,328 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 801 transitions. [2022-01-10 23:58:10,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:58:10,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:10,329 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 23:58:10,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:58:10,329 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:10,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash 397649059, now seen corresponding path program 1 times [2022-01-10 23:58:10,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:10,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860282932] [2022-01-10 23:58:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:10,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:10,426 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 23:58:10,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:10,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860282932] [2022-01-10 23:58:10,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860282932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:10,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:10,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:58:10,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004545321] [2022-01-10 23:58:10,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:10,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:58:10,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:10,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:58:10,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:58:10,429 INFO L87 Difference]: Start difference. First operand 477 states and 801 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 23:58:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:10,841 INFO L93 Difference]: Finished difference Result 2813 states and 4647 transitions. [2022-01-10 23:58:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:58:10,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 23:58:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:10,850 INFO L225 Difference]: With dead ends: 2813 [2022-01-10 23:58:10,850 INFO L226 Difference]: Without dead ends: 2614 [2022-01-10 23:58:10,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:58:10,853 INFO L933 BasicCegarLoop]: 1155 mSDtfsCounter, 4871 mSDsluCounter, 4544 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4871 SdHoareTripleChecker+Valid, 5699 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:58:10,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4871 Valid, 5699 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:58:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2022-01-10 23:58:10,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 882. [2022-01-10 23:58:10,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 880 states have (on average 1.6897727272727272) internal successors, (1487), 881 states have internal predecessors, (1487), 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 23:58:10,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1487 transitions. [2022-01-10 23:58:10,923 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1487 transitions. Word has length 68 [2022-01-10 23:58:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:10,925 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 1487 transitions. [2022-01-10 23:58:10,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 23:58:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1487 transitions. [2022-01-10 23:58:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:58:10,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:10,926 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 23:58:10,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:58:10,927 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:10,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:10,927 INFO L85 PathProgramCache]: Analyzing trace with hash -505936136, now seen corresponding path program 1 times [2022-01-10 23:58:10,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:10,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093625013] [2022-01-10 23:58:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:10,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:11,028 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 23:58:11,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:11,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093625013] [2022-01-10 23:58:11,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093625013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:11,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:11,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:58:11,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68870361] [2022-01-10 23:58:11,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:11,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:58:11,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:11,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:58:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:58:11,030 INFO L87 Difference]: Start difference. First operand 882 states and 1487 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 23:58:11,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:11,230 INFO L93 Difference]: Finished difference Result 1479 states and 2437 transitions. [2022-01-10 23:58:11,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:58:11,230 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 23:58:11,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:11,234 INFO L225 Difference]: With dead ends: 1479 [2022-01-10 23:58:11,234 INFO L226 Difference]: Without dead ends: 1125 [2022-01-10 23:58:11,234 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 23:58:11,236 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 1892 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:58:11,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1892 Valid, 1914 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:58:11,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2022-01-10 23:58:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 882. [2022-01-10 23:58:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 880 states have (on average 1.6852272727272728) internal successors, (1483), 881 states have internal predecessors, (1483), 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 23:58:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1483 transitions. [2022-01-10 23:58:11,332 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1483 transitions. Word has length 69 [2022-01-10 23:58:11,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:11,332 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 1483 transitions. [2022-01-10 23:58:11,332 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 23:58:11,332 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1483 transitions. [2022-01-10 23:58:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:58:11,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:11,333 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 23:58:11,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:58:11,333 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:11,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1743045171, now seen corresponding path program 1 times [2022-01-10 23:58:11,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:11,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416361800] [2022-01-10 23:58:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:11,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:11,395 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 23:58:11,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:11,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416361800] [2022-01-10 23:58:11,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416361800] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:11,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:11,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:58:11,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585943787] [2022-01-10 23:58:11,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:11,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:58:11,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:11,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:58:11,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:58:11,397 INFO L87 Difference]: Start difference. First operand 882 states and 1483 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 23:58:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:11,544 INFO L93 Difference]: Finished difference Result 2523 states and 4278 transitions. [2022-01-10 23:58:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:58:11,544 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 23:58:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:11,548 INFO L225 Difference]: With dead ends: 2523 [2022-01-10 23:58:11,548 INFO L226 Difference]: Without dead ends: 1678 [2022-01-10 23:58:11,549 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 23:58:11,550 INFO L933 BasicCegarLoop]: 1501 mSDtfsCounter, 2334 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:58:11,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2334 Valid, 2253 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:58:11,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2022-01-10 23:58:11,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 882. [2022-01-10 23:58:11,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 880 states have (on average 1.6829545454545454) internal successors, (1481), 881 states have internal predecessors, (1481), 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 23:58:11,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1481 transitions. [2022-01-10 23:58:11,631 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1481 transitions. Word has length 69 [2022-01-10 23:58:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:11,631 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 1481 transitions. [2022-01-10 23:58:11,632 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 23:58:11,632 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1481 transitions. [2022-01-10 23:58:11,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:58:11,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:11,633 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] [2022-01-10 23:58:11,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:58:11,633 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:11,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:11,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1770141353, now seen corresponding path program 1 times [2022-01-10 23:58:11,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:11,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493127231] [2022-01-10 23:58:11,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:11,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:11,733 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 23:58:11,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:11,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493127231] [2022-01-10 23:58:11,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493127231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:11,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:11,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:58:11,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760113863] [2022-01-10 23:58:11,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:11,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:58:11,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:11,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:58:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:58:11,734 INFO L87 Difference]: Start difference. First operand 882 states and 1481 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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 23:58:11,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:11,997 INFO L93 Difference]: Finished difference Result 2722 states and 4387 transitions. [2022-01-10 23:58:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:58:11,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2022-01-10 23:58:11,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:12,004 INFO L225 Difference]: With dead ends: 2722 [2022-01-10 23:58:12,004 INFO L226 Difference]: Without dead ends: 2444 [2022-01-10 23:58:12,005 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 23:58:12,006 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 2587 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:58:12,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2587 Valid, 3194 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:58:12,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2022-01-10 23:58:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 1182. [2022-01-10 23:58:12,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1180 states have (on average 1.6559322033898305) internal successors, (1954), 1181 states have internal predecessors, (1954), 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 23:58:12,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1954 transitions. [2022-01-10 23:58:12,096 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1954 transitions. Word has length 70 [2022-01-10 23:58:12,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:12,096 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 1954 transitions. [2022-01-10 23:58:12,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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 23:58:12,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1954 transitions. [2022-01-10 23:58:12,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:58:12,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:12,098 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 23:58:12,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:58:12,098 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:12,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:12,098 INFO L85 PathProgramCache]: Analyzing trace with hash -802737822, now seen corresponding path program 1 times [2022-01-10 23:58:12,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:12,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583394899] [2022-01-10 23:58:12,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:12,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:12,190 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 23:58:12,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:12,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583394899] [2022-01-10 23:58:12,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583394899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:12,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:12,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:58:12,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629793392] [2022-01-10 23:58:12,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:12,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:58:12,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:12,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:58:12,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:58:12,192 INFO L87 Difference]: Start difference. First operand 1182 states and 1954 transitions. Second operand has 8 states, 8 states have (on average 8.875) 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 23:58:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:12,464 INFO L93 Difference]: Finished difference Result 2095 states and 3393 transitions. [2022-01-10 23:58:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:58:12,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) 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 23:58:12,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:12,468 INFO L225 Difference]: With dead ends: 2095 [2022-01-10 23:58:12,469 INFO L226 Difference]: Without dead ends: 1565 [2022-01-10 23:58:12,470 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 23:58:12,471 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 2445 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 4174 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 23:58:12,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2445 Valid, 4174 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:58:12,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-01-10 23:58:12,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1148. [2022-01-10 23:58:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1146 states have (on average 1.6527050610820244) internal successors, (1894), 1147 states have internal predecessors, (1894), 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 23:58:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1894 transitions. [2022-01-10 23:58:12,576 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1894 transitions. Word has length 71 [2022-01-10 23:58:12,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:12,576 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 1894 transitions. [2022-01-10 23:58:12,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) 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 23:58:12,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1894 transitions. [2022-01-10 23:58:12,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 23:58:12,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:12,578 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] [2022-01-10 23:58:12,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:58:12,578 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:12,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:12,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2131232649, now seen corresponding path program 1 times [2022-01-10 23:58:12,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:12,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662411897] [2022-01-10 23:58:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:12,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:12,694 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 23:58:12,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:12,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662411897] [2022-01-10 23:58:12,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662411897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:12,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:12,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:58:12,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158569139] [2022-01-10 23:58:12,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:12,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:58:12,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:12,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:58:12,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:58:12,696 INFO L87 Difference]: Start difference. First operand 1148 states and 1894 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 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 23:58:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:13,589 INFO L93 Difference]: Finished difference Result 5680 states and 8863 transitions. [2022-01-10 23:58:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:58:13,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 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 74 [2022-01-10 23:58:13,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:13,617 INFO L225 Difference]: With dead ends: 5680 [2022-01-10 23:58:13,618 INFO L226 Difference]: Without dead ends: 5102 [2022-01-10 23:58:13,636 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 23:58:13,636 INFO L933 BasicCegarLoop]: 952 mSDtfsCounter, 7158 mSDsluCounter, 5705 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7158 SdHoareTripleChecker+Valid, 6657 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:58:13,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7158 Valid, 6657 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:58:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2022-01-10 23:58:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 2168. [2022-01-10 23:58:13,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2166 states have (on average 1.6611265004616804) internal successors, (3598), 2167 states have internal predecessors, (3598), 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 23:58:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 3598 transitions. [2022-01-10 23:58:13,948 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 3598 transitions. Word has length 74 [2022-01-10 23:58:13,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:13,948 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 3598 transitions. [2022-01-10 23:58:13,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 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 23:58:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 3598 transitions. [2022-01-10 23:58:13,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 23:58:13,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:13,950 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] [2022-01-10 23:58:13,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:58:13,951 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:13,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:13,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1192090641, now seen corresponding path program 1 times [2022-01-10 23:58:13,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:13,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191170105] [2022-01-10 23:58:13,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:13,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:14,067 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 23:58:14,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:14,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191170105] [2022-01-10 23:58:14,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191170105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:14,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:14,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:58:14,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116778698] [2022-01-10 23:58:14,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:14,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:58:14,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:14,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:58:14,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:58:14,069 INFO L87 Difference]: Start difference. First operand 2168 states and 3598 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 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 23:58:15,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:15,480 INFO L93 Difference]: Finished difference Result 9730 states and 15279 transitions. [2022-01-10 23:58:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:58:15,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 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 75 [2022-01-10 23:58:15,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:15,504 INFO L225 Difference]: With dead ends: 9730 [2022-01-10 23:58:15,504 INFO L226 Difference]: Without dead ends: 8646 [2022-01-10 23:58:15,507 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 23:58:15,507 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 7146 mSDsluCounter, 4996 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7146 SdHoareTripleChecker+Valid, 5808 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:58:15,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7146 Valid, 5808 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:58:15,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2022-01-10 23:58:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 4214. [2022-01-10 23:58:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4214 states, 4212 states have (on average 1.6657169990503324) internal successors, (7016), 4213 states have internal predecessors, (7016), 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 23:58:15,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4214 states to 4214 states and 7016 transitions. [2022-01-10 23:58:15,887 INFO L78 Accepts]: Start accepts. Automaton has 4214 states and 7016 transitions. Word has length 75 [2022-01-10 23:58:15,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:15,887 INFO L470 AbstractCegarLoop]: Abstraction has 4214 states and 7016 transitions. [2022-01-10 23:58:15,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 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 23:58:15,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4214 states and 7016 transitions. [2022-01-10 23:58:15,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 23:58:15,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:15,891 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] [2022-01-10 23:58:15,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:58:15,891 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:15,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:15,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1223110448, now seen corresponding path program 1 times [2022-01-10 23:58:15,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:15,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040025256] [2022-01-10 23:58:15,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:15,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:15,961 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 23:58:15,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:15,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040025256] [2022-01-10 23:58:15,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040025256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:15,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:15,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:58:15,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298347604] [2022-01-10 23:58:15,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:15,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:58:15,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:15,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:58:15,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:58:15,963 INFO L87 Difference]: Start difference. First operand 4214 states and 7016 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 23:58:17,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:17,037 INFO L93 Difference]: Finished difference Result 10034 states and 15910 transitions. [2022-01-10 23:58:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:58:17,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 75 [2022-01-10 23:58:17,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:17,050 INFO L225 Difference]: With dead ends: 10034 [2022-01-10 23:58:17,050 INFO L226 Difference]: Without dead ends: 7952 [2022-01-10 23:58:17,052 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 23:58:17,053 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 658 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:58:17,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 2475 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:58:17,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7952 states. [2022-01-10 23:58:17,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7952 to 4234. [2022-01-10 23:58:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4234 states, 4232 states have (on average 1.662570888468809) internal successors, (7036), 4233 states have internal predecessors, (7036), 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 23:58:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4234 states to 4234 states and 7036 transitions. [2022-01-10 23:58:17,426 INFO L78 Accepts]: Start accepts. Automaton has 4234 states and 7036 transitions. Word has length 75 [2022-01-10 23:58:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:17,426 INFO L470 AbstractCegarLoop]: Abstraction has 4234 states and 7036 transitions. [2022-01-10 23:58:17,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 23:58:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 4234 states and 7036 transitions. [2022-01-10 23:58:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 23:58:17,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:17,437 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] [2022-01-10 23:58:17,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:58:17,437 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1961007727, now seen corresponding path program 1 times [2022-01-10 23:58:17,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:17,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437638597] [2022-01-10 23:58:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:17,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:17,526 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 23:58:17,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:17,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437638597] [2022-01-10 23:58:17,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437638597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:17,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:17,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:58:17,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851590054] [2022-01-10 23:58:17,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:17,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:58:17,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:17,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:58:17,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:58:17,527 INFO L87 Difference]: Start difference. First operand 4234 states and 7036 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 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 23:58:19,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:19,977 INFO L93 Difference]: Finished difference Result 17926 states and 28215 transitions. [2022-01-10 23:58:19,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:58:19,978 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 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 75 [2022-01-10 23:58:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:20,003 INFO L225 Difference]: With dead ends: 17926 [2022-01-10 23:58:20,003 INFO L226 Difference]: Without dead ends: 15824 [2022-01-10 23:58:20,008 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 23:58:20,008 INFO L933 BasicCegarLoop]: 859 mSDtfsCounter, 5535 mSDsluCounter, 5759 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5535 SdHoareTripleChecker+Valid, 6618 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:58:20,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5535 Valid, 6618 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:58:20,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15824 states. [2022-01-10 23:58:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15824 to 8344. [2022-01-10 23:58:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8344 states, 8342 states have (on average 1.6655478302565332) internal successors, (13894), 8343 states have internal predecessors, (13894), 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 23:58:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8344 states to 8344 states and 13894 transitions. [2022-01-10 23:58:20,854 INFO L78 Accepts]: Start accepts. Automaton has 8344 states and 13894 transitions. Word has length 75 [2022-01-10 23:58:20,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:20,854 INFO L470 AbstractCegarLoop]: Abstraction has 8344 states and 13894 transitions. [2022-01-10 23:58:20,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 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 23:58:20,855 INFO L276 IsEmpty]: Start isEmpty. Operand 8344 states and 13894 transitions. [2022-01-10 23:58:20,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 23:58:20,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:20,889 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] [2022-01-10 23:58:20,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:58:20,889 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:20,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1800807060, now seen corresponding path program 1 times [2022-01-10 23:58:20,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:20,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147742082] [2022-01-10 23:58:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:20,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:20,953 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 23:58:20,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:20,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147742082] [2022-01-10 23:58:20,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147742082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:20,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:20,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:58:20,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975348577] [2022-01-10 23:58:20,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:20,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:58:20,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:58:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:58:20,955 INFO L87 Difference]: Start difference. First operand 8344 states and 13894 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 23:58:23,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:23,492 INFO L93 Difference]: Finished difference Result 23658 states and 37789 transitions. [2022-01-10 23:58:23,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:58:23,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 75 [2022-01-10 23:58:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:23,517 INFO L225 Difference]: With dead ends: 23658 [2022-01-10 23:58:23,517 INFO L226 Difference]: Without dead ends: 19600 [2022-01-10 23:58:23,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 23:58:23,522 INFO L933 BasicCegarLoop]: 1380 mSDtfsCounter, 901 mSDsluCounter, 3150 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 4530 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:58:23,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 4530 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:58:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19600 states. [2022-01-10 23:58:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19600 to 8578. [2022-01-10 23:58:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8578 states, 8576 states have (on average 1.6683768656716418) internal successors, (14308), 8577 states have internal predecessors, (14308), 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 23:58:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8578 states to 8578 states and 14308 transitions. [2022-01-10 23:58:24,407 INFO L78 Accepts]: Start accepts. Automaton has 8578 states and 14308 transitions. Word has length 75 [2022-01-10 23:58:24,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:24,407 INFO L470 AbstractCegarLoop]: Abstraction has 8578 states and 14308 transitions. [2022-01-10 23:58:24,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 23:58:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 8578 states and 14308 transitions. [2022-01-10 23:58:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 23:58:24,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:24,412 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] [2022-01-10 23:58:24,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:58:24,412 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:24,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1107705363, now seen corresponding path program 1 times [2022-01-10 23:58:24,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:24,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814486590] [2022-01-10 23:58:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:24,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:24,480 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 23:58:24,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:24,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814486590] [2022-01-10 23:58:24,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814486590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:24,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:24,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:58:24,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908370452] [2022-01-10 23:58:24,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:24,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:58:24,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:58:24,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:58:24,481 INFO L87 Difference]: Start difference. First operand 8578 states and 14308 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 23:58:28,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:28,912 INFO L93 Difference]: Finished difference Result 36020 states and 57282 transitions. [2022-01-10 23:58:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:58:28,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 75 [2022-01-10 23:58:28,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:28,958 INFO L225 Difference]: With dead ends: 36020 [2022-01-10 23:58:28,958 INFO L226 Difference]: Without dead ends: 31888 [2022-01-10 23:58:28,969 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 23:58:28,969 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 2436 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 3477 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:58:28,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2436 Valid, 3477 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:58:28,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31888 states. [2022-01-10 23:58:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31888 to 16976. [2022-01-10 23:58:30,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16976 states, 16974 states have (on average 1.6703193118887711) internal successors, (28352), 16975 states have internal predecessors, (28352), 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 23:58:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16976 states to 16976 states and 28352 transitions. [2022-01-10 23:58:30,886 INFO L78 Accepts]: Start accepts. Automaton has 16976 states and 28352 transitions. Word has length 75 [2022-01-10 23:58:30,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:30,886 INFO L470 AbstractCegarLoop]: Abstraction has 16976 states and 28352 transitions. [2022-01-10 23:58:30,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 23:58:30,887 INFO L276 IsEmpty]: Start isEmpty. Operand 16976 states and 28352 transitions. [2022-01-10 23:58:30,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:58:30,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:30,896 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 23:58:30,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:58:30,897 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:30,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:30,897 INFO L85 PathProgramCache]: Analyzing trace with hash 319236469, now seen corresponding path program 1 times [2022-01-10 23:58:30,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:30,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897338239] [2022-01-10 23:58:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:30,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:30,987 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 23:58:30,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:30,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897338239] [2022-01-10 23:58:30,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897338239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:30,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:30,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:58:30,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968365475] [2022-01-10 23:58:30,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:30,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:58:30,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:30,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:58:30,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:58:30,988 INFO L87 Difference]: Start difference. First operand 16976 states and 28352 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 23:58:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:58:40,946 INFO L93 Difference]: Finished difference Result 68610 states and 108543 transitions. [2022-01-10 23:58:40,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:58:40,946 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 23:58:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:58:41,050 INFO L225 Difference]: With dead ends: 68610 [2022-01-10 23:58:41,050 INFO L226 Difference]: Without dead ends: 60434 [2022-01-10 23:58:41,073 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 23:58:41,074 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 7123 mSDsluCounter, 4998 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7123 SdHoareTripleChecker+Valid, 5816 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:58:41,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7123 Valid, 5816 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:58:41,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60434 states. [2022-01-10 23:58:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60434 to 33842. [2022-01-10 23:58:45,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33842 states, 33840 states have (on average 1.6706855791962174) internal successors, (56536), 33841 states have internal predecessors, (56536), 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 23:58:45,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33842 states to 33842 states and 56536 transitions. [2022-01-10 23:58:45,285 INFO L78 Accepts]: Start accepts. Automaton has 33842 states and 56536 transitions. Word has length 76 [2022-01-10 23:58:45,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:58:45,285 INFO L470 AbstractCegarLoop]: Abstraction has 33842 states and 56536 transitions. [2022-01-10 23:58:45,285 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 23:58:45,285 INFO L276 IsEmpty]: Start isEmpty. Operand 33842 states and 56536 transitions. [2022-01-10 23:58:45,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:58:45,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:58:45,297 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 23:58:45,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:58:45,298 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:58:45,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:58:45,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1088153555, now seen corresponding path program 1 times [2022-01-10 23:58:45,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:58:45,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391788072] [2022-01-10 23:58:45,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:58:45,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:58:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:58:45,398 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 23:58:45,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:58:45,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391788072] [2022-01-10 23:58:45,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391788072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:58:45,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:58:45,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:58:45,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849978659] [2022-01-10 23:58:45,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:58:45,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:58:45,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:58:45,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:58:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:58:45,399 INFO L87 Difference]: Start difference. First operand 33842 states and 56536 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 23:59:06,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:06,749 INFO L93 Difference]: Finished difference Result 134370 states and 212799 transitions. [2022-01-10 23:59:06,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:59:06,750 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 23:59:06,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:06,993 INFO L225 Difference]: With dead ends: 134370 [2022-01-10 23:59:06,994 INFO L226 Difference]: Without dead ends: 118136 [2022-01-10 23:59:07,033 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 23:59:07,034 INFO L933 BasicCegarLoop]: 865 mSDtfsCounter, 5516 mSDsluCounter, 5761 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5516 SdHoareTripleChecker+Valid, 6626 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:07,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5516 Valid, 6626 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:59:07,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118136 states.