/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_SUM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 03:39:24,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 03:39:24,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 03:39:24,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 03:39:24,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 03:39:24,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 03:39:24,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 03:39:24,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 03:39:24,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 03:39:24,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 03:39:24,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 03:39:24,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 03:39:24,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 03:39:24,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 03:39:24,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 03:39:24,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 03:39:24,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 03:39:24,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 03:39:24,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 03:39:24,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 03:39:24,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 03:39:24,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 03:39:24,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 03:39:24,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 03:39:24,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 03:39:24,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 03:39:24,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 03:39:24,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 03:39:24,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 03:39:24,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 03:39:24,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 03:39:24,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 03:39:24,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 03:39:24,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 03:39:24,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 03:39:24,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 03:39:24,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 03:39:24,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 03:39:24,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 03:39:24,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 03:39:24,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 03:39:24,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 03:39:25,005 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 03:39:25,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 03:39:25,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 03:39:25,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 03:39:25,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 03:39:25,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 03:39:25,007 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 03:39:25,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 03:39:25,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 03:39:25,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 03:39:25,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 03:39:25,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 03:39:25,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 03:39:25,008 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 03:39:25,008 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 03:39:25,008 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 03:39:25,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 03:39:25,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 03:39:25,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 03:39:25,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 03:39:25,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 03:39:25,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:39:25,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 03:39:25,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 03:39:25,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 03:39:25,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 03:39:25,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 03:39:25,009 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 03:39:25,009 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 03:39:25,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 03:39:25,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 03:39:25,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 03:39:25,010 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 03:39:25,011 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 03:39:25,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 03:39:25,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 03:39:25,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 03:39:25,258 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 03:39:25,260 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 03:39:25,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label42.c [2022-01-11 03:39:25,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f86b6f7/61b38652a9b947b1af3182fa530d90ce/FLAG7b55501f0 [2022-01-11 03:39:25,800 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 03:39:25,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label42.c [2022-01-11 03:39:25,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f86b6f7/61b38652a9b947b1af3182fa530d90ce/FLAG7b55501f0 [2022-01-11 03:39:25,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f86b6f7/61b38652a9b947b1af3182fa530d90ce [2022-01-11 03:39:25,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 03:39:25,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 03:39:25,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 03:39:25,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 03:39:25,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 03:39:25,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:39:25" (1/1) ... [2022-01-11 03:39:25,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0d55d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:25, skipping insertion in model container [2022-01-11 03:39:25,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:39:25" (1/1) ... [2022-01-11 03:39:25,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 03:39:25,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 03:39:26,397 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label42.c[60691,60704] [2022-01-11 03:39:26,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:39:26,431 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 03:39:26,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label42.c[60691,60704] [2022-01-11 03:39:26,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:39:26,661 INFO L208 MainTranslator]: Completed translation [2022-01-11 03:39:26,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:26 WrapperNode [2022-01-11 03:39:26,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 03:39:26,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 03:39:26,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 03:39:26,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 03:39:26,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:26" (1/1) ... [2022-01-11 03:39:26,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:26" (1/1) ... [2022-01-11 03:39:26,736 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-11 03:39:26,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 03:39:26,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 03:39:26,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 03:39:26,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 03:39:26,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:26" (1/1) ... [2022-01-11 03:39:26,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:26" (1/1) ... [2022-01-11 03:39:26,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:26" (1/1) ... [2022-01-11 03:39:26,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:26" (1/1) ... [2022-01-11 03:39:26,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:26" (1/1) ... [2022-01-11 03:39:26,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:26" (1/1) ... [2022-01-11 03:39:26,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:26" (1/1) ... [2022-01-11 03:39:26,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 03:39:26,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 03:39:26,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 03:39:26,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 03:39:26,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:26" (1/1) ... [2022-01-11 03:39:26,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:39:26,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:39:26,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 03:39:26,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 03:39:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 03:39:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 03:39:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 03:39:26,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 03:39:26,992 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 03:39:26,993 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 03:39:28,325 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 03:39:28,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 03:39:28,334 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 03:39:28,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:39:28 BoogieIcfgContainer [2022-01-11 03:39:28,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 03:39:28,337 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 03:39:28,337 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 03:39:28,338 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 03:39:28,340 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:39:28" (1/1) ... [2022-01-11 03:39:28,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:39:28 BasicIcfg [2022-01-11 03:39:28,857 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 03:39:28,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 03:39:28,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 03:39:28,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 03:39:28,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:39:25" (1/4) ... [2022-01-11 03:39:28,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3ec695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:39:28, skipping insertion in model container [2022-01-11 03:39:28,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:39:26" (2/4) ... [2022-01-11 03:39:28,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3ec695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:39:28, skipping insertion in model container [2022-01-11 03:39:28,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:39:28" (3/4) ... [2022-01-11 03:39:28,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3ec695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:39:28, skipping insertion in model container [2022-01-11 03:39:28,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:39:28" (4/4) ... [2022-01-11 03:39:28,865 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label42.cTransformedIcfg [2022-01-11 03:39:28,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 03:39:28,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 03:39:28,915 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 03:39:28,921 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 03:39:28,922 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 03:39:28,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:28,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-11 03:39:28,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:28,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:28,974 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:28,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:28,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1622509450, now seen corresponding path program 1 times [2022-01-11 03:39:28,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:28,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249946666] [2022-01-11 03:39:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:28,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:39:29,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:29,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249946666] [2022-01-11 03:39:29,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249946666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:29,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:29,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:39:29,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803262880] [2022-01-11 03:39:29,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:29,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:29,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:29,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:29,741 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:30,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:30,854 INFO L93 Difference]: Finished difference Result 855 states and 1496 transitions. [2022-01-11 03:39:30,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:30,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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 196 [2022-01-11 03:39:30,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:30,866 INFO L225 Difference]: With dead ends: 855 [2022-01-11 03:39:30,866 INFO L226 Difference]: Without dead ends: 460 [2022-01-11 03:39:30,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:30,871 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 100 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:30,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 176 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 03:39:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-11 03:39:30,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 459. [2022-01-11 03:39:30,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.5502183406113537) internal successors, (710), 458 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:30,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 710 transitions. [2022-01-11 03:39:30,909 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 710 transitions. Word has length 196 [2022-01-11 03:39:30,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:30,909 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 710 transitions. [2022-01-11 03:39:30,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:30,910 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 710 transitions. [2022-01-11 03:39:30,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-11 03:39:30,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:30,912 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:30,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 03:39:30,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:30,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:30,913 INFO L85 PathProgramCache]: Analyzing trace with hash 204095136, now seen corresponding path program 1 times [2022-01-11 03:39:30,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:30,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183732827] [2022-01-11 03:39:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:30,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:39:31,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:31,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183732827] [2022-01-11 03:39:31,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183732827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:31,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:31,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:39:31,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751188500] [2022-01-11 03:39:31,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:31,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:31,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:31,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:31,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:31,050 INFO L87 Difference]: Start difference. First operand 459 states and 710 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:31,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:31,397 INFO L93 Difference]: Finished difference Result 1356 states and 2104 transitions. [2022-01-11 03:39:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:31,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 201 [2022-01-11 03:39:31,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:31,401 INFO L225 Difference]: With dead ends: 1356 [2022-01-11 03:39:31,401 INFO L226 Difference]: Without dead ends: 899 [2022-01-11 03:39:31,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:31,403 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 360 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:31,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 555 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 03:39:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-01-11 03:39:31,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 897. [2022-01-11 03:39:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 1.5491071428571428) internal successors, (1388), 896 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1388 transitions. [2022-01-11 03:39:31,423 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1388 transitions. Word has length 201 [2022-01-11 03:39:31,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:31,423 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1388 transitions. [2022-01-11 03:39:31,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1388 transitions. [2022-01-11 03:39:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-11 03:39:31,426 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:31,426 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:31,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 03:39:31,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:31,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1594217126, now seen corresponding path program 1 times [2022-01-11 03:39:31,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:31,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766257107] [2022-01-11 03:39:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:31,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:39:31,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:31,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766257107] [2022-01-11 03:39:31,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766257107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:31,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:31,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:39:31,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137533544] [2022-01-11 03:39:31,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:31,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:31,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:31,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:31,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:31,535 INFO L87 Difference]: Start difference. First operand 897 states and 1388 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:32,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:32,509 INFO L93 Difference]: Finished difference Result 2647 states and 4116 transitions. [2022-01-11 03:39:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:32,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 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 204 [2022-01-11 03:39:32,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:32,514 INFO L225 Difference]: With dead ends: 2647 [2022-01-11 03:39:32,515 INFO L226 Difference]: Without dead ends: 1752 [2022-01-11 03:39:32,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:32,516 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:32,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 96 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:39:32,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2022-01-11 03:39:32,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1721. [2022-01-11 03:39:32,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1720 states have (on average 1.5151162790697674) internal successors, (2606), 1720 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:32,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2606 transitions. [2022-01-11 03:39:32,543 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2606 transitions. Word has length 204 [2022-01-11 03:39:32,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:32,544 INFO L470 AbstractCegarLoop]: Abstraction has 1721 states and 2606 transitions. [2022-01-11 03:39:32,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2606 transitions. [2022-01-11 03:39:32,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-11 03:39:32,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:32,548 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:32,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 03:39:32,548 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:32,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash 793758910, now seen corresponding path program 1 times [2022-01-11 03:39:32,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:32,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127291484] [2022-01-11 03:39:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:32,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 03:39:32,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:32,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127291484] [2022-01-11 03:39:32,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127291484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:32,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:32,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:39:32,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794997213] [2022-01-11 03:39:32,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:32,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:32,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:32,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:32,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:32,656 INFO L87 Difference]: Start difference. First operand 1721 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:33,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:33,093 INFO L93 Difference]: Finished difference Result 3393 states and 5147 transitions. [2022-01-11 03:39:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:33,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 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 214 [2022-01-11 03:39:33,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:33,098 INFO L225 Difference]: With dead ends: 3393 [2022-01-11 03:39:33,098 INFO L226 Difference]: Without dead ends: 1674 [2022-01-11 03:39:33,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:33,101 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 329 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:33,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 03:39:33,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2022-01-11 03:39:33,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1674. [2022-01-11 03:39:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 1.474596533173939) internal successors, (2467), 1673 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2467 transitions. [2022-01-11 03:39:33,125 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2467 transitions. Word has length 214 [2022-01-11 03:39:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:33,125 INFO L470 AbstractCegarLoop]: Abstraction has 1674 states and 2467 transitions. [2022-01-11 03:39:33,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2467 transitions. [2022-01-11 03:39:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-01-11 03:39:33,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:33,128 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:33,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 03:39:33,128 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:33,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1238867474, now seen corresponding path program 1 times [2022-01-11 03:39:33,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:33,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145095456] [2022-01-11 03:39:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:33,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:39:33,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:33,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145095456] [2022-01-11 03:39:33,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145095456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:33,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:33,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:39:33,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902888268] [2022-01-11 03:39:33,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:33,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:33,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:33,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:33,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:33,217 INFO L87 Difference]: Start difference. First operand 1674 states and 2467 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:34,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:34,079 INFO L93 Difference]: Finished difference Result 3341 states and 4924 transitions. [2022-01-11 03:39:34,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:34,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 218 [2022-01-11 03:39:34,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:34,085 INFO L225 Difference]: With dead ends: 3341 [2022-01-11 03:39:34,085 INFO L226 Difference]: Without dead ends: 1669 [2022-01-11 03:39:34,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:34,088 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 253 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:34,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 344 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:39:34,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2022-01-11 03:39:34,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1667. [2022-01-11 03:39:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 1.3457382953181272) internal successors, (2242), 1666 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2242 transitions. [2022-01-11 03:39:34,118 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2242 transitions. Word has length 218 [2022-01-11 03:39:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:34,119 INFO L470 AbstractCegarLoop]: Abstraction has 1667 states and 2242 transitions. [2022-01-11 03:39:34,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2242 transitions. [2022-01-11 03:39:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-11 03:39:34,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:34,123 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:34,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 03:39:34,123 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:34,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:34,123 INFO L85 PathProgramCache]: Analyzing trace with hash 529727744, now seen corresponding path program 1 times [2022-01-11 03:39:34,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:34,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011937290] [2022-01-11 03:39:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:34,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:39:34,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:34,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011937290] [2022-01-11 03:39:34,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011937290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:34,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:34,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:39:34,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000815404] [2022-01-11 03:39:34,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:34,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:34,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:34,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:34,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:34,272 INFO L87 Difference]: Start difference. First operand 1667 states and 2242 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:35,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:35,122 INFO L93 Difference]: Finished difference Result 4960 states and 6676 transitions. [2022-01-11 03:39:35,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:35,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 234 [2022-01-11 03:39:35,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:35,132 INFO L225 Difference]: With dead ends: 4960 [2022-01-11 03:39:35,133 INFO L226 Difference]: Without dead ends: 3295 [2022-01-11 03:39:35,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:35,136 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 194 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:35,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 379 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:39:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2022-01-11 03:39:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 3291. [2022-01-11 03:39:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 3290 states have (on average 1.2231003039513677) internal successors, (4024), 3290 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:35,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 4024 transitions. [2022-01-11 03:39:35,190 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 4024 transitions. Word has length 234 [2022-01-11 03:39:35,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:35,190 INFO L470 AbstractCegarLoop]: Abstraction has 3291 states and 4024 transitions. [2022-01-11 03:39:35,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:35,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 4024 transitions. [2022-01-11 03:39:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-11 03:39:35,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:35,196 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:35,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 03:39:35,196 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:35,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:35,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1487255956, now seen corresponding path program 1 times [2022-01-11 03:39:35,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:35,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174004861] [2022-01-11 03:39:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:35,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-11 03:39:35,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:35,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174004861] [2022-01-11 03:39:35,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174004861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:35,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:35,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:39:35,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147312832] [2022-01-11 03:39:35,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:35,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:35,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:35,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:35,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:35,331 INFO L87 Difference]: Start difference. First operand 3291 states and 4024 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:36,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:36,443 INFO L93 Difference]: Finished difference Result 8208 states and 10240 transitions. [2022-01-11 03:39:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:36,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 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 234 [2022-01-11 03:39:36,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:36,460 INFO L225 Difference]: With dead ends: 8208 [2022-01-11 03:39:36,461 INFO L226 Difference]: Without dead ends: 4919 [2022-01-11 03:39:36,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:36,467 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 209 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:36,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 135 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 03:39:36,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2022-01-11 03:39:36,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4915. [2022-01-11 03:39:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4915 states, 4914 states have (on average 1.1921041921041922) internal successors, (5858), 4914 states have internal predecessors, (5858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4915 states to 4915 states and 5858 transitions. [2022-01-11 03:39:36,562 INFO L78 Accepts]: Start accepts. Automaton has 4915 states and 5858 transitions. Word has length 234 [2022-01-11 03:39:36,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:36,562 INFO L470 AbstractCegarLoop]: Abstraction has 4915 states and 5858 transitions. [2022-01-11 03:39:36,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:36,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4915 states and 5858 transitions. [2022-01-11 03:39:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-01-11 03:39:36,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:36,570 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:36,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 03:39:36,570 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:36,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:36,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1302789401, now seen corresponding path program 1 times [2022-01-11 03:39:36,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:36,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769011200] [2022-01-11 03:39:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:36,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:39:36,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:36,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769011200] [2022-01-11 03:39:36,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769011200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:36,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:36,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:39:36,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820487259] [2022-01-11 03:39:36,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:36,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:36,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:36,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:36,723 INFO L87 Difference]: Start difference. First operand 4915 states and 5858 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:37,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:37,717 INFO L93 Difference]: Finished difference Result 12281 states and 14603 transitions. [2022-01-11 03:39:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:37,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 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 237 [2022-01-11 03:39:37,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:37,740 INFO L225 Difference]: With dead ends: 12281 [2022-01-11 03:39:37,741 INFO L226 Difference]: Without dead ends: 7368 [2022-01-11 03:39:37,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:37,748 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 196 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:37,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 69 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:39:37,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7368 states. [2022-01-11 03:39:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7368 to 7366. [2022-01-11 03:39:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7366 states, 7365 states have (on average 1.1773251866938221) internal successors, (8671), 7365 states have internal predecessors, (8671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7366 states to 7366 states and 8671 transitions. [2022-01-11 03:39:37,874 INFO L78 Accepts]: Start accepts. Automaton has 7366 states and 8671 transitions. Word has length 237 [2022-01-11 03:39:37,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:37,875 INFO L470 AbstractCegarLoop]: Abstraction has 7366 states and 8671 transitions. [2022-01-11 03:39:37,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:37,875 INFO L276 IsEmpty]: Start isEmpty. Operand 7366 states and 8671 transitions. [2022-01-11 03:39:37,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-01-11 03:39:37,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:37,885 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:37,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 03:39:37,885 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:37,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1638054833, now seen corresponding path program 1 times [2022-01-11 03:39:37,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:37,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106012996] [2022-01-11 03:39:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:37,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:38,057 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:39:38,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:38,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106012996] [2022-01-11 03:39:38,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106012996] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:39:38,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967428778] [2022-01-11 03:39:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:38,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:39:38,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:39:38,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:39:38,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 03:39:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:38,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 6831 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-11 03:39:38,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:39:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:39:39,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:39:39,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967428778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:39,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 03:39:39,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-11 03:39:39,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177224837] [2022-01-11 03:39:39,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:39,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:39,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:39,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:39,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:39:39,502 INFO L87 Difference]: Start difference. First operand 7366 states and 8671 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:40,470 INFO L93 Difference]: Finished difference Result 21230 states and 24975 transitions. [2022-01-11 03:39:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:40,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 244 [2022-01-11 03:39:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:40,516 INFO L225 Difference]: With dead ends: 21230 [2022-01-11 03:39:40,516 INFO L226 Difference]: Without dead ends: 13866 [2022-01-11 03:39:40,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:39:40,528 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 55 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:40,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 319 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:39:40,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13866 states. [2022-01-11 03:39:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13866 to 13862. [2022-01-11 03:39:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13862 states, 13861 states have (on average 1.146959093860472) internal successors, (15898), 13861 states have internal predecessors, (15898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:40,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13862 states to 13862 states and 15898 transitions. [2022-01-11 03:39:40,752 INFO L78 Accepts]: Start accepts. Automaton has 13862 states and 15898 transitions. Word has length 244 [2022-01-11 03:39:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:40,753 INFO L470 AbstractCegarLoop]: Abstraction has 13862 states and 15898 transitions. [2022-01-11 03:39:40,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 13862 states and 15898 transitions. [2022-01-11 03:39:40,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-11 03:39:40,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:40,775 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:40,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 03:39:40,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:39:40,998 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:40,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:40,999 INFO L85 PathProgramCache]: Analyzing trace with hash -946683220, now seen corresponding path program 1 times [2022-01-11 03:39:40,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:40,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595829229] [2022-01-11 03:39:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:41,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-11 03:39:41,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:41,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595829229] [2022-01-11 03:39:41,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595829229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:41,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:41,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:39:41,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275123896] [2022-01-11 03:39:41,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:41,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:41,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:41,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:41,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:41,313 INFO L87 Difference]: Start difference. First operand 13862 states and 15898 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:42,505 INFO L93 Difference]: Finished difference Result 37691 states and 43213 transitions. [2022-01-11 03:39:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:42,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 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 326 [2022-01-11 03:39:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:42,555 INFO L225 Difference]: With dead ends: 37691 [2022-01-11 03:39:42,555 INFO L226 Difference]: Without dead ends: 23831 [2022-01-11 03:39:42,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:42,577 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 156 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:42,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 183 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-11 03:39:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23831 states. [2022-01-11 03:39:42,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23831 to 17520. [2022-01-11 03:39:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17520 states, 17519 states have (on average 1.1616530623894057) internal successors, (20351), 17519 states have internal predecessors, (20351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17520 states to 17520 states and 20351 transitions. [2022-01-11 03:39:42,877 INFO L78 Accepts]: Start accepts. Automaton has 17520 states and 20351 transitions. Word has length 326 [2022-01-11 03:39:42,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:42,877 INFO L470 AbstractCegarLoop]: Abstraction has 17520 states and 20351 transitions. [2022-01-11 03:39:42,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:42,878 INFO L276 IsEmpty]: Start isEmpty. Operand 17520 states and 20351 transitions. [2022-01-11 03:39:42,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-01-11 03:39:42,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:42,905 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:42,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 03:39:42,906 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:42,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:42,907 INFO L85 PathProgramCache]: Analyzing trace with hash 474012370, now seen corresponding path program 1 times [2022-01-11 03:39:42,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:42,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977838018] [2022-01-11 03:39:42,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:42,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 138 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-11 03:39:43,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:43,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977838018] [2022-01-11 03:39:43,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977838018] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:39:43,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771525757] [2022-01-11 03:39:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:43,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:39:43,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:39:43,151 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:39:43,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 03:39:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:44,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 9440 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-11 03:39:44,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:39:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-11 03:39:44,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:39:44,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771525757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:44,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 03:39:44,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-11 03:39:44,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694300219] [2022-01-11 03:39:44,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:44,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:44,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:44,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:39:44,628 INFO L87 Difference]: Start difference. First operand 17520 states and 20351 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:45,418 INFO L93 Difference]: Finished difference Result 35042 states and 40706 transitions. [2022-01-11 03:39:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:45,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 331 [2022-01-11 03:39:45,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:45,441 INFO L225 Difference]: With dead ends: 35042 [2022-01-11 03:39:45,441 INFO L226 Difference]: Without dead ends: 17524 [2022-01-11 03:39:45,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:39:45,458 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 67 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:45,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 290 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 03:39:45,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17524 states. [2022-01-11 03:39:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17524 to 16911. [2022-01-11 03:39:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16911 states, 16910 states have (on average 1.148669426374926) internal successors, (19424), 16910 states have internal predecessors, (19424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16911 states to 16911 states and 19424 transitions. [2022-01-11 03:39:45,731 INFO L78 Accepts]: Start accepts. Automaton has 16911 states and 19424 transitions. Word has length 331 [2022-01-11 03:39:45,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:45,732 INFO L470 AbstractCegarLoop]: Abstraction has 16911 states and 19424 transitions. [2022-01-11 03:39:45,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:45,732 INFO L276 IsEmpty]: Start isEmpty. Operand 16911 states and 19424 transitions. [2022-01-11 03:39:45,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-01-11 03:39:45,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:45,757 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:45,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 03:39:45,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-11 03:39:45,979 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:45,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash 356864273, now seen corresponding path program 1 times [2022-01-11 03:39:45,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:45,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370116430] [2022-01-11 03:39:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:45,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:39:46,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:46,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370116430] [2022-01-11 03:39:46,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370116430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:46,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:46,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:39:46,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55250977] [2022-01-11 03:39:46,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:46,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:46,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:46,224 INFO L87 Difference]: Start difference. First operand 16911 states and 19424 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:47,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:47,356 INFO L93 Difference]: Finished difference Result 40127 states and 45982 transitions. [2022-01-11 03:39:47,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:47,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 347 [2022-01-11 03:39:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:47,388 INFO L225 Difference]: With dead ends: 40127 [2022-01-11 03:39:47,389 INFO L226 Difference]: Without dead ends: 23218 [2022-01-11 03:39:47,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:47,398 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 87 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:47,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 332 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:39:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23218 states. [2022-01-11 03:39:47,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23218 to 22798. [2022-01-11 03:39:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22798 states, 22797 states have (on average 1.1326490327674694) internal successors, (25821), 22797 states have internal predecessors, (25821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22798 states to 22798 states and 25821 transitions. [2022-01-11 03:39:47,652 INFO L78 Accepts]: Start accepts. Automaton has 22798 states and 25821 transitions. Word has length 347 [2022-01-11 03:39:47,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:47,652 INFO L470 AbstractCegarLoop]: Abstraction has 22798 states and 25821 transitions. [2022-01-11 03:39:47,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 22798 states and 25821 transitions. [2022-01-11 03:39:47,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-01-11 03:39:47,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:47,677 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:47,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 03:39:47,677 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:47,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:47,678 INFO L85 PathProgramCache]: Analyzing trace with hash -376865133, now seen corresponding path program 1 times [2022-01-11 03:39:47,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:47,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927894999] [2022-01-11 03:39:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:47,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:39:47,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:47,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927894999] [2022-01-11 03:39:47,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927894999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:47,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:47,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:39:47,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128273563] [2022-01-11 03:39:47,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:47,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:39:47,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:47,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:39:47,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:39:47,918 INFO L87 Difference]: Start difference. First operand 22798 states and 25821 transitions. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:49,315 INFO L93 Difference]: Finished difference Result 46220 states and 52379 transitions. [2022-01-11 03:39:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:39:49,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 3 states have internal predecessors, (363), 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 363 [2022-01-11 03:39:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:49,342 INFO L225 Difference]: With dead ends: 46220 [2022-01-11 03:39:49,342 INFO L226 Difference]: Without dead ends: 23424 [2022-01-11 03:39:49,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:39:49,359 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 277 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:49,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 96 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-11 03:39:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23424 states. [2022-01-11 03:39:49,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23424 to 22595. [2022-01-11 03:39:49,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22595 states, 22594 states have (on average 1.1331326900947154) internal successors, (25602), 22594 states have internal predecessors, (25602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22595 states to 22595 states and 25602 transitions. [2022-01-11 03:39:49,650 INFO L78 Accepts]: Start accepts. Automaton has 22595 states and 25602 transitions. Word has length 363 [2022-01-11 03:39:49,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:49,650 INFO L470 AbstractCegarLoop]: Abstraction has 22595 states and 25602 transitions. [2022-01-11 03:39:49,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:49,650 INFO L276 IsEmpty]: Start isEmpty. Operand 22595 states and 25602 transitions. [2022-01-11 03:39:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-01-11 03:39:49,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:49,665 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:49,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 03:39:49,665 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:49,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash 53642027, now seen corresponding path program 1 times [2022-01-11 03:39:49,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:49,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579731473] [2022-01-11 03:39:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:49,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-01-11 03:39:49,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:49,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579731473] [2022-01-11 03:39:49,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579731473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:49,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:49,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:39:49,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828969888] [2022-01-11 03:39:49,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:49,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:39:49,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:49,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:39:49,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:39:49,828 INFO L87 Difference]: Start difference. First operand 22595 states and 25602 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:51,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:51,147 INFO L93 Difference]: Finished difference Result 66160 states and 75089 transitions. [2022-01-11 03:39:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:39:51,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 3 states have internal predecessors, (237), 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 370 [2022-01-11 03:39:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:51,196 INFO L225 Difference]: With dead ends: 66160 [2022-01-11 03:39:51,196 INFO L226 Difference]: Without dead ends: 43567 [2022-01-11 03:39:51,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:39:51,218 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 526 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:51,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 474 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 03:39:51,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43567 states. [2022-01-11 03:39:51,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43567 to 43552. [2022-01-11 03:39:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43552 states, 43551 states have (on average 1.1321898463869946) internal successors, (49308), 43551 states have internal predecessors, (49308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:51,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43552 states to 43552 states and 49308 transitions. [2022-01-11 03:39:51,729 INFO L78 Accepts]: Start accepts. Automaton has 43552 states and 49308 transitions. Word has length 370 [2022-01-11 03:39:51,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:51,729 INFO L470 AbstractCegarLoop]: Abstraction has 43552 states and 49308 transitions. [2022-01-11 03:39:51,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 43552 states and 49308 transitions. [2022-01-11 03:39:51,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-01-11 03:39:51,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:51,754 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:51,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 03:39:51,754 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:51,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash 812311040, now seen corresponding path program 1 times [2022-01-11 03:39:51,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:51,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261842141] [2022-01-11 03:39:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:51,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 94 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-01-11 03:39:52,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:52,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261842141] [2022-01-11 03:39:52,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261842141] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:39:52,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152178264] [2022-01-11 03:39:52,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:52,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:39:52,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:39:52,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:39:52,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 03:39:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:53,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 10960 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-11 03:39:53,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:39:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:39:53,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:39:53,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152178264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:53,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 03:39:53,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-11 03:39:53,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654128296] [2022-01-11 03:39:53,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:53,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:53,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:53,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:53,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:39:53,692 INFO L87 Difference]: Start difference. First operand 43552 states and 49308 transitions. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:54,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:54,670 INFO L93 Difference]: Finished difference Result 87920 states and 99452 transitions. [2022-01-11 03:39:54,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:54,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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 380 [2022-01-11 03:39:54,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:54,718 INFO L225 Difference]: With dead ends: 87920 [2022-01-11 03:39:54,719 INFO L226 Difference]: Without dead ends: 44370 [2022-01-11 03:39:54,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:39:54,744 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 135 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:54,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 42 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:39:54,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44370 states. [2022-01-11 03:39:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44370 to 43552. [2022-01-11 03:39:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43552 states, 43551 states have (on average 1.1313402677320843) internal successors, (49271), 43551 states have internal predecessors, (49271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43552 states to 43552 states and 49271 transitions. [2022-01-11 03:39:55,490 INFO L78 Accepts]: Start accepts. Automaton has 43552 states and 49271 transitions. Word has length 380 [2022-01-11 03:39:55,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:55,498 INFO L470 AbstractCegarLoop]: Abstraction has 43552 states and 49271 transitions. [2022-01-11 03:39:55,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:55,499 INFO L276 IsEmpty]: Start isEmpty. Operand 43552 states and 49271 transitions. [2022-01-11 03:39:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-01-11 03:39:55,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:55,525 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:55,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 03:39:55,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:39:55,748 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1994481771, now seen corresponding path program 1 times [2022-01-11 03:39:55,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:55,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407852889] [2022-01-11 03:39:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:55,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-01-11 03:39:56,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:56,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407852889] [2022-01-11 03:39:56,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407852889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:56,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:56,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:39:56,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139493230] [2022-01-11 03:39:56,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:56,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:56,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:56,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:56,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:56,061 INFO L87 Difference]: Start difference. First operand 43552 states and 49271 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:56,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:39:56,661 INFO L93 Difference]: Finished difference Result 127349 states and 144154 transitions. [2022-01-11 03:39:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:39:56,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 427 [2022-01-11 03:39:56,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:39:56,881 INFO L225 Difference]: With dead ends: 127349 [2022-01-11 03:39:56,881 INFO L226 Difference]: Without dead ends: 83799 [2022-01-11 03:39:56,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:56,929 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 298 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 03:39:56,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 852 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 03:39:56,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83799 states. [2022-01-11 03:39:57,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83799 to 83187. [2022-01-11 03:39:57,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83187 states, 83186 states have (on average 1.1194071117736157) internal successors, (93119), 83186 states have internal predecessors, (93119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:58,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83187 states to 83187 states and 93119 transitions. [2022-01-11 03:39:58,060 INFO L78 Accepts]: Start accepts. Automaton has 83187 states and 93119 transitions. Word has length 427 [2022-01-11 03:39:58,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:39:58,061 INFO L470 AbstractCegarLoop]: Abstraction has 83187 states and 93119 transitions. [2022-01-11 03:39:58,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:39:58,061 INFO L276 IsEmpty]: Start isEmpty. Operand 83187 states and 93119 transitions. [2022-01-11 03:39:58,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-01-11 03:39:58,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:39:58,095 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:39:58,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 03:39:58,096 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:39:58,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:39:58,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1694506581, now seen corresponding path program 1 times [2022-01-11 03:39:58,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:39:58,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661124509] [2022-01-11 03:39:58,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:39:58,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:39:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:39:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-01-11 03:39:58,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:39:58,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661124509] [2022-01-11 03:39:58,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661124509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:39:58,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:39:58,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:39:58,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174926320] [2022-01-11 03:39:58,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:39:58,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:39:58,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:39:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:39:58,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:39:58,476 INFO L87 Difference]: Start difference. First operand 83187 states and 93119 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:00,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:00,150 INFO L93 Difference]: Finished difference Result 185097 states and 207045 transitions. [2022-01-11 03:40:00,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:00,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 432 [2022-01-11 03:40:00,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:00,300 INFO L225 Difference]: With dead ends: 185097 [2022-01-11 03:40:00,301 INFO L226 Difference]: Without dead ends: 93386 [2022-01-11 03:40:00,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:00,363 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 129 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:00,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 369 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-11 03:40:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93386 states. [2022-01-11 03:40:01,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93386 to 89114. [2022-01-11 03:40:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89114 states, 89113 states have (on average 1.0836129408728243) internal successors, (96564), 89113 states have internal predecessors, (96564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89114 states to 89114 states and 96564 transitions. [2022-01-11 03:40:01,657 INFO L78 Accepts]: Start accepts. Automaton has 89114 states and 96564 transitions. Word has length 432 [2022-01-11 03:40:01,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:01,657 INFO L470 AbstractCegarLoop]: Abstraction has 89114 states and 96564 transitions. [2022-01-11 03:40:01,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:01,657 INFO L276 IsEmpty]: Start isEmpty. Operand 89114 states and 96564 transitions. [2022-01-11 03:40:01,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-01-11 03:40:01,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:01,694 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:01,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 03:40:01,694 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:01,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:01,695 INFO L85 PathProgramCache]: Analyzing trace with hash -840131600, now seen corresponding path program 1 times [2022-01-11 03:40:01,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:01,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538937897] [2022-01-11 03:40:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:01,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 141 proven. 6 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-01-11 03:40:02,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:02,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538937897] [2022-01-11 03:40:02,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538937897] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:40:02,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13986071] [2022-01-11 03:40:02,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:02,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:40:02,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:40:02,124 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:40:02,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 03:40:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:03,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 12595 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-11 03:40:03,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:40:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-01-11 03:40:04,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:40:04,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13986071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:04,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 03:40:04,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-11 03:40:04,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536017882] [2022-01-11 03:40:04,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:04,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:04,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:04,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:04,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:40:04,064 INFO L87 Difference]: Start difference. First operand 89114 states and 96564 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:05,236 INFO L93 Difference]: Finished difference Result 223182 states and 242261 transitions. [2022-01-11 03:40:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:05,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 434 [2022-01-11 03:40:05,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:05,398 INFO L225 Difference]: With dead ends: 223182 [2022-01-11 03:40:05,398 INFO L226 Difference]: Without dead ends: 134070 [2022-01-11 03:40:05,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:40:05,452 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 122 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:05,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 87 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 03:40:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134070 states. [2022-01-11 03:40:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134070 to 121867. [2022-01-11 03:40:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121867 states, 121866 states have (on average 1.079275597787734) internal successors, (131527), 121866 states have internal predecessors, (131527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121867 states to 121867 states and 131527 transitions. [2022-01-11 03:40:07,531 INFO L78 Accepts]: Start accepts. Automaton has 121867 states and 131527 transitions. Word has length 434 [2022-01-11 03:40:07,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:07,532 INFO L470 AbstractCegarLoop]: Abstraction has 121867 states and 131527 transitions. [2022-01-11 03:40:07,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:07,532 INFO L276 IsEmpty]: Start isEmpty. Operand 121867 states and 131527 transitions. [2022-01-11 03:40:07,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-01-11 03:40:07,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:07,567 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:07,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-11 03:40:07,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-11 03:40:07,784 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:07,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:07,784 INFO L85 PathProgramCache]: Analyzing trace with hash 873235222, now seen corresponding path program 1 times [2022-01-11 03:40:07,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:07,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632692038] [2022-01-11 03:40:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:07,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-01-11 03:40:08,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:08,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632692038] [2022-01-11 03:40:08,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632692038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:08,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:08,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:08,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173266370] [2022-01-11 03:40:08,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:08,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:08,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:08,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:08,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:08,023 INFO L87 Difference]: Start difference. First operand 121867 states and 131527 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:09,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:09,730 INFO L93 Difference]: Finished difference Result 262665 states and 283061 transitions. [2022-01-11 03:40:09,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:09,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 2 states have internal predecessors, (314), 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 447 [2022-01-11 03:40:09,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:09,972 INFO L225 Difference]: With dead ends: 262665 [2022-01-11 03:40:09,972 INFO L226 Difference]: Without dead ends: 140800 [2022-01-11 03:40:10,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:10,076 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 115 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:10,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 124 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:40:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140800 states. [2022-01-11 03:40:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140800 to 133490. [2022-01-11 03:40:11,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133490 states, 133489 states have (on average 1.0794896957801767) internal successors, (144100), 133489 states have internal predecessors, (144100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:12,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133490 states to 133490 states and 144100 transitions. [2022-01-11 03:40:12,134 INFO L78 Accepts]: Start accepts. Automaton has 133490 states and 144100 transitions. Word has length 447 [2022-01-11 03:40:12,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:12,136 INFO L470 AbstractCegarLoop]: Abstraction has 133490 states and 144100 transitions. [2022-01-11 03:40:12,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:12,136 INFO L276 IsEmpty]: Start isEmpty. Operand 133490 states and 144100 transitions. [2022-01-11 03:40:12,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-01-11 03:40:12,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:12,225 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:12,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 03:40:12,226 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:12,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:12,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1378506391, now seen corresponding path program 1 times [2022-01-11 03:40:12,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:12,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174166354] [2022-01-11 03:40:12,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:12,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-01-11 03:40:12,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:12,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174166354] [2022-01-11 03:40:12,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174166354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:12,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:12,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:12,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005580564] [2022-01-11 03:40:12,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:12,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:12,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:12,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:12,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:12,572 INFO L87 Difference]: Start difference. First operand 133490 states and 144100 transitions. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:14,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:14,871 INFO L93 Difference]: Finished difference Result 278397 states and 300425 transitions. [2022-01-11 03:40:14,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:14,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 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 448 [2022-01-11 03:40:14,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:15,070 INFO L225 Difference]: With dead ends: 278397 [2022-01-11 03:40:15,070 INFO L226 Difference]: Without dead ends: 144097 [2022-01-11 03:40:15,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:15,137 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 322 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:15,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 90 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-11 03:40:15,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144097 states. [2022-01-11 03:40:16,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144097 to 133084. [2022-01-11 03:40:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133084 states, 133083 states have (on average 1.0791836673354223) internal successors, (143621), 133083 states have internal predecessors, (143621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133084 states to 133084 states and 143621 transitions. [2022-01-11 03:40:17,226 INFO L78 Accepts]: Start accepts. Automaton has 133084 states and 143621 transitions. Word has length 448 [2022-01-11 03:40:17,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:17,226 INFO L470 AbstractCegarLoop]: Abstraction has 133084 states and 143621 transitions. [2022-01-11 03:40:17,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:17,226 INFO L276 IsEmpty]: Start isEmpty. Operand 133084 states and 143621 transitions. [2022-01-11 03:40:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-01-11 03:40:17,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:17,277 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:17,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 03:40:17,277 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:17,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash -45315154, now seen corresponding path program 1 times [2022-01-11 03:40:17,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:17,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943478749] [2022-01-11 03:40:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:17,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-01-11 03:40:17,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:17,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943478749] [2022-01-11 03:40:17,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943478749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:17,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:17,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:17,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866410972] [2022-01-11 03:40:17,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:17,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:17,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:17,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:17,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:17,740 INFO L87 Difference]: Start difference. First operand 133084 states and 143621 transitions. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:19,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:19,478 INFO L93 Difference]: Finished difference Result 274544 states and 296155 transitions. [2022-01-11 03:40:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:19,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 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 454 [2022-01-11 03:40:19,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:19,686 INFO L225 Difference]: With dead ends: 274544 [2022-01-11 03:40:19,686 INFO L226 Difference]: Without dead ends: 141462 [2022-01-11 03:40:19,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:19,954 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 489 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:19,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 293 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:40:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141462 states. [2022-01-11 03:40:21,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141462 to 124906. [2022-01-11 03:40:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124906 states, 124905 states have (on average 1.077314759217005) internal successors, (134562), 124905 states have internal predecessors, (134562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124906 states to 124906 states and 134562 transitions. [2022-01-11 03:40:21,514 INFO L78 Accepts]: Start accepts. Automaton has 124906 states and 134562 transitions. Word has length 454 [2022-01-11 03:40:21,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:21,514 INFO L470 AbstractCegarLoop]: Abstraction has 124906 states and 134562 transitions. [2022-01-11 03:40:21,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 124906 states and 134562 transitions. [2022-01-11 03:40:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2022-01-11 03:40:21,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:21,812 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:21,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 03:40:21,812 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:21,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:21,813 INFO L85 PathProgramCache]: Analyzing trace with hash -673209410, now seen corresponding path program 1 times [2022-01-11 03:40:21,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:21,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188839577] [2022-01-11 03:40:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:21,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:22,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:22,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188839577] [2022-01-11 03:40:22,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188839577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:22,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:22,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 03:40:22,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425581424] [2022-01-11 03:40:22,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:22,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:22,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:22,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:22,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:22,518 INFO L87 Difference]: Start difference. First operand 124906 states and 134562 transitions. Second operand has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:24,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:24,350 INFO L93 Difference]: Finished difference Result 252501 states and 271699 transitions. [2022-01-11 03:40:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:24,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 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 549 [2022-01-11 03:40:24,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:24,351 INFO L225 Difference]: With dead ends: 252501 [2022-01-11 03:40:24,351 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 03:40:24,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:24,471 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 300 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:24,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 338 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 03:40:24,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 03:40:24,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 03:40:24,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 03:40:24,472 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 549 [2022-01-11 03:40:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:24,481 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 03:40:24,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 03:40:24,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 03:40:24,483 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-11 03:40:24,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 03:40:24,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.