/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/combinations/Problem05_label41+token_ring.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:01:53,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:01:53,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:01:53,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:01:53,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:01:53,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:01:53,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:01:53,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:01:53,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:01:53,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:01:53,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:01:53,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:01:53,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:01:53,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:01:53,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:01:53,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:01:53,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:01:53,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:01:53,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:01:53,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:01:53,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:01:53,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:01:53,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:01:53,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:01:53,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 07:01:53,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 07:01:53,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 07:01:53,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 07:01:53,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 07:01:53,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 07:01:53,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 07:01:53,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 07:01:53,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 07:01:53,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 07:01:53,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 07:01:53,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 07:01:53,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 07:01:53,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 07:01:53,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:01:53,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:01:53,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:01:53,818 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 07:01:53,844 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:01:53,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:01:53,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:01:53,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:01:53,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:01:53,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:01:53,845 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:01:53,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:01:53,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:01:53,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:01:53,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:01:53,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:01:53,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:01:53,846 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:01:53,846 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:01:53,846 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:01:53,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:01:53,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:01:53,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:01:53,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:01:53,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:01:53,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:01:53,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:01:53,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:01:53,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:01:53,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:01:53,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:01:53,847 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:01:53,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:01:53,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:01:53,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:01:53,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:01:53,848 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:01:53,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:01:54,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:01:54,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:01:54,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:01:54,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:01:54,097 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:01:54,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c [2022-01-11 07:01:54,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6db855c9/767fbe606d824746b0d6d519f94ff388/FLAG20fb612dd [2022-01-11 07:01:54,859 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:01:54,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c [2022-01-11 07:01:54,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6db855c9/767fbe606d824746b0d6d519f94ff388/FLAG20fb612dd [2022-01-11 07:01:55,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6db855c9/767fbe606d824746b0d6d519f94ff388 [2022-01-11 07:01:55,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:01:55,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:01:55,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:01:55,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:01:55,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:01:55,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:01:55" (1/1) ... [2022-01-11 07:01:55,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f8c7c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:55, skipping insertion in model container [2022-01-11 07:01:55,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:01:55" (1/1) ... [2022-01-11 07:01:55,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:01:55,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:01:56,929 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c[376251,376264] [2022-01-11 07:01:56,958 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c[383339,383352] [2022-01-11 07:01:57,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:01:57,123 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:01:57,717 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c[376251,376264] [2022-01-11 07:01:57,780 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.03.cil-2.c[383339,383352] [2022-01-11 07:01:57,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:01:57,835 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:01:57,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:57 WrapperNode [2022-01-11 07:01:57,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:01:57,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:01:57,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:01:57,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:01:57,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:57" (1/1) ... [2022-01-11 07:01:57,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:57" (1/1) ... [2022-01-11 07:01:58,190 INFO L137 Inliner]: procedures = 51, calls = 50, calls flagged for inlining = 45, calls inlined = 72, statements flattened = 13148 [2022-01-11 07:01:58,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:01:58,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:01:58,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:01:58,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:01:58,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:57" (1/1) ... [2022-01-11 07:01:58,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:57" (1/1) ... [2022-01-11 07:01:58,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:57" (1/1) ... [2022-01-11 07:01:58,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:57" (1/1) ... [2022-01-11 07:01:58,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:57" (1/1) ... [2022-01-11 07:01:58,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:57" (1/1) ... [2022-01-11 07:01:58,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:57" (1/1) ... [2022-01-11 07:01:58,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:01:58,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:01:58,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:01:58,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:01:58,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:57" (1/1) ... [2022-01-11 07:01:58,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:01:58,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:01:58,766 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 07:01:58,784 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 07:01:58,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:01:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:01:58,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:01:58,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:01:58,918 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:01:58,920 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:02:06,084 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:02:06,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:02:06,110 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-01-11 07:02:06,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:02:06 BoogieIcfgContainer [2022-01-11 07:02:06,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:02:06,116 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:02:06,117 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:02:06,118 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:02:06,120 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:02:06" (1/1) ... [2022-01-11 07:02:07,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:02:07 BasicIcfg [2022-01-11 07:02:07,542 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:02:07,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:02:07,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:02:07,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:02:07,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:01:55" (1/4) ... [2022-01-11 07:02:07,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4623af84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:02:07, skipping insertion in model container [2022-01-11 07:02:07,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:01:57" (2/4) ... [2022-01-11 07:02:07,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4623af84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:02:07, skipping insertion in model container [2022-01-11 07:02:07,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:02:06" (3/4) ... [2022-01-11 07:02:07,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4623af84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:02:07, skipping insertion in model container [2022-01-11 07:02:07,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:02:07" (4/4) ... [2022-01-11 07:02:07,549 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.03.cil-2.cTransformedIcfg [2022-01-11 07:02:07,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:02:07,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 07:02:07,600 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:02:07,608 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 07:02:07,608 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 07:02:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 2508 states, 2505 states have (on average 1.8287425149700598) internal successors, (4581), 2507 states have internal predecessors, (4581), 0 states have call successors, (0), 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 07:02:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:02:07,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:07,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:07,660 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:07,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:07,665 INFO L85 PathProgramCache]: Analyzing trace with hash -192499067, now seen corresponding path program 1 times [2022-01-11 07:02:07,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:07,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470623194] [2022-01-11 07:02:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:07,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:08,061 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 07:02:08,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:08,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470623194] [2022-01-11 07:02:08,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470623194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:08,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:08,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:08,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389313293] [2022-01-11 07:02:08,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:08,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:08,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:08,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:08,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:08,102 INFO L87 Difference]: Start difference. First operand has 2508 states, 2505 states have (on average 1.8287425149700598) internal successors, (4581), 2507 states have internal predecessors, (4581), 0 states have call successors, (0), 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 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:08,239 INFO L93 Difference]: Finished difference Result 5244 states and 9511 transitions. [2022-01-11 07:02:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:08,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:02:08,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:08,264 INFO L225 Difference]: With dead ends: 5244 [2022-01-11 07:02:08,264 INFO L226 Difference]: Without dead ends: 2676 [2022-01-11 07:02:08,274 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 07:02:08,277 INFO L933 BasicCegarLoop]: 4498 mSDtfsCounter, 4446 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 4888 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:08,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4446 Valid, 4888 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:08,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2022-01-11 07:02:08,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2674. [2022-01-11 07:02:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7892964071856288) internal successors, (4781), 2673 states have internal predecessors, (4781), 0 states have call successors, (0), 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 07:02:08,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4781 transitions. [2022-01-11 07:02:08,388 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4781 transitions. Word has length 66 [2022-01-11 07:02:08,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:08,388 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4781 transitions. [2022-01-11 07:02:08,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:08,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4781 transitions. [2022-01-11 07:02:08,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:02:08,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:08,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:08,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:02:08,391 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:08,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:08,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1072602789, now seen corresponding path program 1 times [2022-01-11 07:02:08,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:08,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643572680] [2022-01-11 07:02:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:08,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:08,454 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 07:02:08,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:08,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643572680] [2022-01-11 07:02:08,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643572680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:08,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:08,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:08,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680638297] [2022-01-11 07:02:08,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:08,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:08,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:08,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:08,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:08,458 INFO L87 Difference]: Start difference. First operand 2674 states and 4781 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:08,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:08,520 INFO L93 Difference]: Finished difference Result 3215 states and 5586 transitions. [2022-01-11 07:02:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:08,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:02:08,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:08,532 INFO L225 Difference]: With dead ends: 3215 [2022-01-11 07:02:08,533 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 07:02:08,535 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 07:02:08,536 INFO L933 BasicCegarLoop]: 4425 mSDtfsCounter, 4418 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 4425 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:08,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 4425 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:08,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 07:02:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 07:02:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.786302395209581) internal successors, (4773), 2673 states have internal predecessors, (4773), 0 states have call successors, (0), 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 07:02:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4773 transitions. [2022-01-11 07:02:08,608 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4773 transitions. Word has length 66 [2022-01-11 07:02:08,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:08,609 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4773 transitions. [2022-01-11 07:02:08,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:08,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4773 transitions. [2022-01-11 07:02:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:02:08,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:08,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:08,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:02:08,612 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:08,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:08,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1721963205, now seen corresponding path program 1 times [2022-01-11 07:02:08,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:08,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662368538] [2022-01-11 07:02:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:08,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:08,696 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 07:02:08,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662368538] [2022-01-11 07:02:08,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662368538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:08,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:08,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:08,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313925682] [2022-01-11 07:02:08,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:08,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:08,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:08,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:08,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:08,699 INFO L87 Difference]: Start difference. First operand 2674 states and 4773 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:08,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:08,760 INFO L93 Difference]: Finished difference Result 3214 states and 5569 transitions. [2022-01-11 07:02:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:08,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:02:08,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:08,771 INFO L225 Difference]: With dead ends: 3214 [2022-01-11 07:02:08,771 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 07:02:08,776 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 07:02:08,779 INFO L933 BasicCegarLoop]: 4420 mSDtfsCounter, 4412 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4412 SdHoareTripleChecker+Valid, 4420 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:08,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4412 Valid, 4420 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 07:02:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 07:02:08,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.783308383233533) internal successors, (4765), 2673 states have internal predecessors, (4765), 0 states have call successors, (0), 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 07:02:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4765 transitions. [2022-01-11 07:02:08,847 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4765 transitions. Word has length 66 [2022-01-11 07:02:08,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:08,847 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4765 transitions. [2022-01-11 07:02:08,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:08,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4765 transitions. [2022-01-11 07:02:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:02:08,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:08,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:08,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:02:08,854 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:08,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:08,855 INFO L85 PathProgramCache]: Analyzing trace with hash -612394331, now seen corresponding path program 1 times [2022-01-11 07:02:08,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:08,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51971826] [2022-01-11 07:02:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:08,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:08,919 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 07:02:08,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:08,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51971826] [2022-01-11 07:02:08,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51971826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:08,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:08,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:08,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648845984] [2022-01-11 07:02:08,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:08,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:08,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:08,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:08,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:08,921 INFO L87 Difference]: Start difference. First operand 2674 states and 4765 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:09,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:09,003 INFO L93 Difference]: Finished difference Result 3213 states and 5552 transitions. [2022-01-11 07:02:09,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:09,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:02:09,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:09,016 INFO L225 Difference]: With dead ends: 3213 [2022-01-11 07:02:09,016 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 07:02:09,022 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 07:02:09,028 INFO L933 BasicCegarLoop]: 4403 mSDtfsCounter, 4358 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:09,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4358 Valid, 4441 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:09,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 07:02:09,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 07:02:09,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.776571856287425) internal successors, (4747), 2673 states have internal predecessors, (4747), 0 states have call successors, (0), 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 07:02:09,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4747 transitions. [2022-01-11 07:02:09,102 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4747 transitions. Word has length 66 [2022-01-11 07:02:09,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:09,107 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4747 transitions. [2022-01-11 07:02:09,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:09,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4747 transitions. [2022-01-11 07:02:09,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:02:09,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:09,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:09,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:02:09,109 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:09,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:09,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1083451324, now seen corresponding path program 1 times [2022-01-11 07:02:09,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:09,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266404768] [2022-01-11 07:02:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:09,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:09,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266404768] [2022-01-11 07:02:09,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266404768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:09,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:09,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:09,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709295364] [2022-01-11 07:02:09,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:09,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:09,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:09,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:09,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:09,155 INFO L87 Difference]: Start difference. First operand 2674 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:09,209 INFO L93 Difference]: Finished difference Result 3212 states and 5515 transitions. [2022-01-11 07:02:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:09,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:02:09,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:09,217 INFO L225 Difference]: With dead ends: 3212 [2022-01-11 07:02:09,217 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 07:02:09,218 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 07:02:09,218 INFO L933 BasicCegarLoop]: 4392 mSDtfsCounter, 4347 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 4429 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:09,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4347 Valid, 4429 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 07:02:09,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 07:02:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7698353293413174) internal successors, (4729), 2673 states have internal predecessors, (4729), 0 states have call successors, (0), 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 07:02:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4729 transitions. [2022-01-11 07:02:09,263 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4729 transitions. Word has length 66 [2022-01-11 07:02:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:09,265 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4729 transitions. [2022-01-11 07:02:09,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4729 transitions. [2022-01-11 07:02:09,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:02:09,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:09,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:09,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:02:09,271 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:09,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:09,271 INFO L85 PathProgramCache]: Analyzing trace with hash 40166627, now seen corresponding path program 1 times [2022-01-11 07:02:09,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:09,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641295056] [2022-01-11 07:02:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:09,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:09,323 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 07:02:09,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:09,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641295056] [2022-01-11 07:02:09,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641295056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:09,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:09,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:09,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839590291] [2022-01-11 07:02:09,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:09,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:09,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:09,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:09,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:09,325 INFO L87 Difference]: Start difference. First operand 2674 states and 4729 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:09,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:09,385 INFO L93 Difference]: Finished difference Result 3211 states and 5478 transitions. [2022-01-11 07:02:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:09,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:02:09,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:09,394 INFO L225 Difference]: With dead ends: 3211 [2022-01-11 07:02:09,394 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 07:02:09,395 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 07:02:09,396 INFO L933 BasicCegarLoop]: 4381 mSDtfsCounter, 4336 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4336 SdHoareTripleChecker+Valid, 4417 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:09,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4336 Valid, 4417 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:09,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 07:02:09,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 07:02:09,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7630988023952097) internal successors, (4711), 2673 states have internal predecessors, (4711), 0 states have call successors, (0), 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 07:02:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4711 transitions. [2022-01-11 07:02:09,451 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4711 transitions. Word has length 66 [2022-01-11 07:02:09,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:09,451 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4711 transitions. [2022-01-11 07:02:09,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:09,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4711 transitions. [2022-01-11 07:02:09,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:02:09,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:09,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:09,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:02:09,453 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:09,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:09,453 INFO L85 PathProgramCache]: Analyzing trace with hash 634433794, now seen corresponding path program 1 times [2022-01-11 07:02:09,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:09,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520384485] [2022-01-11 07:02:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:09,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:09,481 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 07:02:09,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:09,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520384485] [2022-01-11 07:02:09,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520384485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:09,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:09,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:09,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413240382] [2022-01-11 07:02:09,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:09,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:09,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:09,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:09,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:09,484 INFO L87 Difference]: Start difference. First operand 2674 states and 4711 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:09,543 INFO L93 Difference]: Finished difference Result 3210 states and 5441 transitions. [2022-01-11 07:02:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:09,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:02:09,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:09,550 INFO L225 Difference]: With dead ends: 3210 [2022-01-11 07:02:09,550 INFO L226 Difference]: Without dead ends: 2674 [2022-01-11 07:02:09,551 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 07:02:09,552 INFO L933 BasicCegarLoop]: 4370 mSDtfsCounter, 4325 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:09,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4325 Valid, 4405 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:09,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-11 07:02:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2022-01-11 07:02:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2672 states have (on average 1.7563622754491017) internal successors, (4693), 2673 states have internal predecessors, (4693), 0 states have call successors, (0), 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 07:02:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4693 transitions. [2022-01-11 07:02:09,743 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4693 transitions. Word has length 66 [2022-01-11 07:02:09,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:09,743 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 4693 transitions. [2022-01-11 07:02:09,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4693 transitions. [2022-01-11 07:02:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:02:09,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:09,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:09,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:02:09,748 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash 299768865, now seen corresponding path program 1 times [2022-01-11 07:02:09,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:09,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413099450] [2022-01-11 07:02:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:09,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:09,839 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 07:02:09,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:09,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413099450] [2022-01-11 07:02:09,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413099450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:09,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:09,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:02:09,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005944080] [2022-01-11 07:02:09,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:09,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:02:09,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:09,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:02:09,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:02:09,841 INFO L87 Difference]: Start difference. First operand 2674 states and 4693 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:10,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:10,075 INFO L93 Difference]: Finished difference Result 3548 states and 5872 transitions. [2022-01-11 07:02:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:02:10,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:02:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:10,086 INFO L225 Difference]: With dead ends: 3548 [2022-01-11 07:02:10,086 INFO L226 Difference]: Without dead ends: 3026 [2022-01-11 07:02:10,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:02:10,103 INFO L933 BasicCegarLoop]: 4399 mSDtfsCounter, 1041 mSDsluCounter, 12669 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 17068 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:10,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 17068 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:02:10,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2022-01-11 07:02:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2680. [2022-01-11 07:02:10,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2678 states have (on average 1.7509335324869306) internal successors, (4689), 2679 states have internal predecessors, (4689), 0 states have call successors, (0), 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 07:02:10,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 4689 transitions. [2022-01-11 07:02:10,221 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 4689 transitions. Word has length 66 [2022-01-11 07:02:10,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:10,222 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 4689 transitions. [2022-01-11 07:02:10,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:10,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 4689 transitions. [2022-01-11 07:02:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:02:10,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:10,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:10,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:02:10,223 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:10,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:10,223 INFO L85 PathProgramCache]: Analyzing trace with hash 629534626, now seen corresponding path program 1 times [2022-01-11 07:02:10,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:10,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319076432] [2022-01-11 07:02:10,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:10,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:10,293 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 07:02:10,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:10,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319076432] [2022-01-11 07:02:10,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319076432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:10,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:10,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:10,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661571455] [2022-01-11 07:02:10,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:10,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:10,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:10,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:10,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:10,295 INFO L87 Difference]: Start difference. First operand 2680 states and 4689 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:10,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:10,393 INFO L93 Difference]: Finished difference Result 3228 states and 5404 transitions. [2022-01-11 07:02:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:10,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:02:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:10,426 INFO L225 Difference]: With dead ends: 3228 [2022-01-11 07:02:10,426 INFO L226 Difference]: Without dead ends: 2680 [2022-01-11 07:02:10,428 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 07:02:10,429 INFO L933 BasicCegarLoop]: 4365 mSDtfsCounter, 4326 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4326 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:10,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4326 Valid, 4365 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:10,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-01-11 07:02:10,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2680. [2022-01-11 07:02:10,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2678 states have (on average 1.7479462285287528) internal successors, (4681), 2679 states have internal predecessors, (4681), 0 states have call successors, (0), 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 07:02:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 4681 transitions. [2022-01-11 07:02:10,544 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 4681 transitions. Word has length 66 [2022-01-11 07:02:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:10,544 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 4681 transitions. [2022-01-11 07:02:10,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 4681 transitions. [2022-01-11 07:02:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 07:02:10,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:10,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:02:10,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 07:02:10,548 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1408521663, now seen corresponding path program 1 times [2022-01-11 07:02:10,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:10,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294531320] [2022-01-11 07:02:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:10,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:10,632 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 07:02:10,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:10,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294531320] [2022-01-11 07:02:10,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294531320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:10,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:10,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:10,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573663450] [2022-01-11 07:02:10,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:10,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:10,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:10,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:10,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:10,633 INFO L87 Difference]: Start difference. First operand 2680 states and 4681 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:10,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:10,723 INFO L93 Difference]: Finished difference Result 3704 states and 6012 transitions. [2022-01-11 07:02:10,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:10,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 07:02:10,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:10,730 INFO L225 Difference]: With dead ends: 3704 [2022-01-11 07:02:10,731 INFO L226 Difference]: Without dead ends: 3164 [2022-01-11 07:02:10,732 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 07:02:10,733 INFO L933 BasicCegarLoop]: 4360 mSDtfsCounter, 4285 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4285 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:10,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4285 Valid, 4689 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:10,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2022-01-11 07:02:10,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 3104. [2022-01-11 07:02:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3102 states have (on average 1.683752417794971) internal successors, (5223), 3103 states have internal predecessors, (5223), 0 states have call successors, (0), 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 07:02:10,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5223 transitions. [2022-01-11 07:02:10,819 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5223 transitions. Word has length 66 [2022-01-11 07:02:10,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:10,819 INFO L470 AbstractCegarLoop]: Abstraction has 3104 states and 5223 transitions. [2022-01-11 07:02:10,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:02:10,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5223 transitions. [2022-01-11 07:02:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 07:02:10,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:10,821 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 07:02:10,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:02:10,822 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1749508058, now seen corresponding path program 1 times [2022-01-11 07:02:10,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:10,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53452545] [2022-01-11 07:02:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:10,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:10,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:10,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53452545] [2022-01-11 07:02:10,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53452545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:10,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:10,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:10,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685291363] [2022-01-11 07:02:10,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:10,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:10,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:10,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:10,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:10,875 INFO L87 Difference]: Start difference. First operand 3104 states and 5223 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 07:02:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:11,014 INFO L93 Difference]: Finished difference Result 4926 states and 7579 transitions. [2022-01-11 07:02:11,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:11,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-11 07:02:11,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:11,023 INFO L225 Difference]: With dead ends: 4926 [2022-01-11 07:02:11,023 INFO L226 Difference]: Without dead ends: 3968 [2022-01-11 07:02:11,025 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 07:02:11,026 INFO L933 BasicCegarLoop]: 4357 mSDtfsCounter, 4291 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 4686 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:11,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4291 Valid, 4686 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:11,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-01-11 07:02:11,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3878. [2022-01-11 07:02:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3876 states have (on average 1.6034571723426212) internal successors, (6215), 3877 states have internal predecessors, (6215), 0 states have call successors, (0), 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 07:02:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 6215 transitions. [2022-01-11 07:02:11,141 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 6215 transitions. Word has length 106 [2022-01-11 07:02:11,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:11,142 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 6215 transitions. [2022-01-11 07:02:11,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 07:02:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 6215 transitions. [2022-01-11 07:02:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 07:02:11,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:11,143 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 07:02:11,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:02:11,144 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1917210522, now seen corresponding path program 1 times [2022-01-11 07:02:11,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:11,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721330813] [2022-01-11 07:02:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:11,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:11,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:11,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:11,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721330813] [2022-01-11 07:02:11,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721330813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:11,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:11,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:11,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493412043] [2022-01-11 07:02:11,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:11,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:11,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:11,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:11,188 INFO L87 Difference]: Start difference. First operand 3878 states and 6215 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 07:02:11,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:11,381 INFO L93 Difference]: Finished difference Result 7131 states and 10359 transitions. [2022-01-11 07:02:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:11,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-11 07:02:11,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:11,390 INFO L225 Difference]: With dead ends: 7131 [2022-01-11 07:02:11,390 INFO L226 Difference]: Without dead ends: 5427 [2022-01-11 07:02:11,393 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 07:02:11,394 INFO L933 BasicCegarLoop]: 4480 mSDtfsCounter, 4216 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:11,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4216 Valid, 4868 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:11,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5427 states. [2022-01-11 07:02:11,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5427 to 5425. [2022-01-11 07:02:11,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5425 states, 5423 states have (on average 1.4993546007744791) internal successors, (8131), 5424 states have internal predecessors, (8131), 0 states have call successors, (0), 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 07:02:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 8131 transitions. [2022-01-11 07:02:11,570 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 8131 transitions. Word has length 106 [2022-01-11 07:02:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:11,570 INFO L470 AbstractCegarLoop]: Abstraction has 5425 states and 8131 transitions. [2022-01-11 07:02:11,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 07:02:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 8131 transitions. [2022-01-11 07:02:11,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 07:02:11,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:11,573 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 07:02:11,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:02:11,573 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:11,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1179021509, now seen corresponding path program 1 times [2022-01-11 07:02:11,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:11,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653414594] [2022-01-11 07:02:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:11,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:02:11,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:11,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653414594] [2022-01-11 07:02:11,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653414594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:11,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:11,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:11,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278388059] [2022-01-11 07:02:11,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:11,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:11,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:11,606 INFO L87 Difference]: Start difference. First operand 5425 states and 8131 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 07:02:11,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:11,762 INFO L93 Difference]: Finished difference Result 8629 states and 12188 transitions. [2022-01-11 07:02:11,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:11,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 106 [2022-01-11 07:02:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:11,770 INFO L225 Difference]: With dead ends: 8629 [2022-01-11 07:02:11,771 INFO L226 Difference]: Without dead ends: 5378 [2022-01-11 07:02:11,774 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 07:02:11,775 INFO L933 BasicCegarLoop]: 4364 mSDtfsCounter, 402 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 8322 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:11,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 8322 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2022-01-11 07:02:11,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5378. [2022-01-11 07:02:11,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5376 states have (on average 1.5022321428571428) internal successors, (8076), 5377 states have internal predecessors, (8076), 0 states have call successors, (0), 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 07:02:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 8076 transitions. [2022-01-11 07:02:11,927 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 8076 transitions. Word has length 106 [2022-01-11 07:02:11,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:11,927 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 8076 transitions. [2022-01-11 07:02:11,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 07:02:11,928 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 8076 transitions. [2022-01-11 07:02:11,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 07:02:11,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:11,930 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 07:02:11,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 07:02:11,930 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:11,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:11,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1232421230, now seen corresponding path program 1 times [2022-01-11 07:02:11,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:11,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922302960] [2022-01-11 07:02:11,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:11,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:11,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:11,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922302960] [2022-01-11 07:02:11,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922302960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:11,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:11,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:11,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12698492] [2022-01-11 07:02:11,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:11,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:11,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:11,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:11,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:11,964 INFO L87 Difference]: Start difference. First operand 5378 states and 8076 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 07:02:12,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:12,206 INFO L93 Difference]: Finished difference Result 11424 states and 15698 transitions. [2022-01-11 07:02:12,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:12,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-11 07:02:12,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:12,222 INFO L225 Difference]: With dead ends: 11424 [2022-01-11 07:02:12,222 INFO L226 Difference]: Without dead ends: 8220 [2022-01-11 07:02:12,230 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 07:02:12,230 INFO L933 BasicCegarLoop]: 4459 mSDtfsCounter, 4301 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 4839 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:12,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 4839 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:12,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8220 states. [2022-01-11 07:02:12,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8220 to 8042. [2022-01-11 07:02:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8042 states, 8040 states have (on average 1.4149253731343283) internal successors, (11376), 8041 states have internal predecessors, (11376), 0 states have call successors, (0), 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 07:02:12,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8042 states to 8042 states and 11376 transitions. [2022-01-11 07:02:12,565 INFO L78 Accepts]: Start accepts. Automaton has 8042 states and 11376 transitions. Word has length 107 [2022-01-11 07:02:12,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:12,565 INFO L470 AbstractCegarLoop]: Abstraction has 8042 states and 11376 transitions. [2022-01-11 07:02:12,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 07:02:12,565 INFO L276 IsEmpty]: Start isEmpty. Operand 8042 states and 11376 transitions. [2022-01-11 07:02:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 07:02:12,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:12,568 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 07:02:12,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 07:02:12,569 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:12,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:12,569 INFO L85 PathProgramCache]: Analyzing trace with hash -214202641, now seen corresponding path program 1 times [2022-01-11 07:02:12,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:12,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393808435] [2022-01-11 07:02:12,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:12,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:02:12,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:12,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393808435] [2022-01-11 07:02:12,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393808435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:12,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:12,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:12,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976470664] [2022-01-11 07:02:12,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:12,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:12,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:12,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:12,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:12,591 INFO L87 Difference]: Start difference. First operand 8042 states and 11376 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 07:02:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:12,841 INFO L93 Difference]: Finished difference Result 13881 states and 18700 transitions. [2022-01-11 07:02:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:12,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 107 [2022-01-11 07:02:12,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:12,856 INFO L225 Difference]: With dead ends: 13881 [2022-01-11 07:02:12,856 INFO L226 Difference]: Without dead ends: 7996 [2022-01-11 07:02:12,865 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 07:02:12,865 INFO L933 BasicCegarLoop]: 4363 mSDtfsCounter, 400 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 8321 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:12,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 8321 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:12,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2022-01-11 07:02:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 7996. [2022-01-11 07:02:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7996 states, 7994 states have (on average 1.416437327995997) internal successors, (11323), 7995 states have internal predecessors, (11323), 0 states have call successors, (0), 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 07:02:13,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7996 states to 7996 states and 11323 transitions. [2022-01-11 07:02:13,137 INFO L78 Accepts]: Start accepts. Automaton has 7996 states and 11323 transitions. Word has length 107 [2022-01-11 07:02:13,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:13,137 INFO L470 AbstractCegarLoop]: Abstraction has 7996 states and 11323 transitions. [2022-01-11 07:02:13,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 07:02:13,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7996 states and 11323 transitions. [2022-01-11 07:02:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 07:02:13,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:13,140 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 07:02:13,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 07:02:13,140 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:13,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:13,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1030341816, now seen corresponding path program 1 times [2022-01-11 07:02:13,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:13,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961016617] [2022-01-11 07:02:13,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:13,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:13,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:13,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961016617] [2022-01-11 07:02:13,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961016617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:13,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:13,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:13,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854092829] [2022-01-11 07:02:13,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:13,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:13,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:13,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:13,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:13,173 INFO L87 Difference]: Start difference. First operand 7996 states and 11323 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 07:02:13,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:13,711 INFO L93 Difference]: Finished difference Result 18693 states and 24687 transitions. [2022-01-11 07:02:13,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:13,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-11 07:02:13,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:13,737 INFO L225 Difference]: With dead ends: 18693 [2022-01-11 07:02:13,737 INFO L226 Difference]: Without dead ends: 12871 [2022-01-11 07:02:13,749 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 07:02:13,750 INFO L933 BasicCegarLoop]: 4423 mSDtfsCounter, 4300 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4300 SdHoareTripleChecker+Valid, 4801 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:13,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4300 Valid, 4801 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:13,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12871 states. [2022-01-11 07:02:14,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12871 to 12741. [2022-01-11 07:02:14,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12741 states, 12739 states have (on average 1.3499489755867808) internal successors, (17197), 12740 states have internal predecessors, (17197), 0 states have call successors, (0), 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 07:02:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12741 states to 12741 states and 17197 transitions. [2022-01-11 07:02:14,318 INFO L78 Accepts]: Start accepts. Automaton has 12741 states and 17197 transitions. Word has length 108 [2022-01-11 07:02:14,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:14,319 INFO L470 AbstractCegarLoop]: Abstraction has 12741 states and 17197 transitions. [2022-01-11 07:02:14,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 07:02:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 12741 states and 17197 transitions. [2022-01-11 07:02:14,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 07:02:14,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:14,324 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 07:02:14,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 07:02:14,324 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:14,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:14,325 INFO L85 PathProgramCache]: Analyzing trace with hash -565119399, now seen corresponding path program 1 times [2022-01-11 07:02:14,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:14,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997145374] [2022-01-11 07:02:14,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:14,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:02:14,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:14,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997145374] [2022-01-11 07:02:14,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997145374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:14,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:14,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:14,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453109472] [2022-01-11 07:02:14,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:14,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:14,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:14,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:14,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:14,352 INFO L87 Difference]: Start difference. First operand 12741 states and 17197 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 07:02:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:14,870 INFO L93 Difference]: Finished difference Result 23273 states and 30336 transitions. [2022-01-11 07:02:14,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:14,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 108 [2022-01-11 07:02:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:14,903 INFO L225 Difference]: With dead ends: 23273 [2022-01-11 07:02:14,903 INFO L226 Difference]: Without dead ends: 12696 [2022-01-11 07:02:14,920 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 07:02:14,920 INFO L933 BasicCegarLoop]: 4362 mSDtfsCounter, 398 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 8320 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:14,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 8320 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:14,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12696 states. [2022-01-11 07:02:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12696 to 12696. [2022-01-11 07:02:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12696 states, 12694 states have (on average 1.3507168741137545) internal successors, (17146), 12695 states have internal predecessors, (17146), 0 states have call successors, (0), 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 07:02:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12696 states to 12696 states and 17146 transitions. [2022-01-11 07:02:15,597 INFO L78 Accepts]: Start accepts. Automaton has 12696 states and 17146 transitions. Word has length 108 [2022-01-11 07:02:15,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:15,597 INFO L470 AbstractCegarLoop]: Abstraction has 12696 states and 17146 transitions. [2022-01-11 07:02:15,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 07:02:15,597 INFO L276 IsEmpty]: Start isEmpty. Operand 12696 states and 17146 transitions. [2022-01-11 07:02:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-11 07:02:15,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:15,605 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 07:02:15,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 07:02:15,605 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:15,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:15,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1529338429, now seen corresponding path program 1 times [2022-01-11 07:02:15,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:15,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398505183] [2022-01-11 07:02:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:15,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:15,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:15,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398505183] [2022-01-11 07:02:15,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398505183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:15,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:15,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:15,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205490219] [2022-01-11 07:02:15,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:15,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:15,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:15,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:15,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:15,656 INFO L87 Difference]: Start difference. First operand 12696 states and 17146 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 07:02:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:16,305 INFO L93 Difference]: Finished difference Result 32442 states and 41712 transitions. [2022-01-11 07:02:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:16,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-11 07:02:16,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:16,342 INFO L225 Difference]: With dead ends: 32442 [2022-01-11 07:02:16,342 INFO L226 Difference]: Without dead ends: 21920 [2022-01-11 07:02:16,359 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 07:02:16,359 INFO L933 BasicCegarLoop]: 4695 mSDtfsCounter, 331 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 9037 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:16,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 9037 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:16,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21920 states. [2022-01-11 07:02:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21920 to 21920. [2022-01-11 07:02:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21920 states, 21918 states have (on average 1.2924080664294186) internal successors, (28327), 21919 states have internal predecessors, (28327), 0 states have call successors, (0), 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 07:02:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21920 states to 21920 states and 28327 transitions. [2022-01-11 07:02:17,172 INFO L78 Accepts]: Start accepts. Automaton has 21920 states and 28327 transitions. Word has length 109 [2022-01-11 07:02:17,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:17,172 INFO L470 AbstractCegarLoop]: Abstraction has 21920 states and 28327 transitions. [2022-01-11 07:02:17,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 07:02:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand 21920 states and 28327 transitions. [2022-01-11 07:02:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 07:02:17,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:17,204 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 07:02:17,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 07:02:17,204 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:17,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2145762161, now seen corresponding path program 1 times [2022-01-11 07:02:17,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:17,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065349101] [2022-01-11 07:02:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:17,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:17,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:17,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065349101] [2022-01-11 07:02:17,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065349101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:17,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:17,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:17,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237016118] [2022-01-11 07:02:17,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:17,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:17,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:17,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:17,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:17,242 INFO L87 Difference]: Start difference. First operand 21920 states and 28327 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 07:02:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:18,423 INFO L93 Difference]: Finished difference Result 50438 states and 63377 transitions. [2022-01-11 07:02:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:18,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-01-11 07:02:18,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:18,480 INFO L225 Difference]: With dead ends: 50438 [2022-01-11 07:02:18,480 INFO L226 Difference]: Without dead ends: 30696 [2022-01-11 07:02:18,499 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 07:02:18,500 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4202 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4202 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:18,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4202 Valid, 4683 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:18,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30696 states. [2022-01-11 07:02:19,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30696 to 30566. [2022-01-11 07:02:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30566 states, 30564 states have (on average 1.2666862976050255) internal successors, (38715), 30565 states have internal predecessors, (38715), 0 states have call successors, (0), 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 07:02:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30566 states to 30566 states and 38715 transitions. [2022-01-11 07:02:19,692 INFO L78 Accepts]: Start accepts. Automaton has 30566 states and 38715 transitions. Word has length 140 [2022-01-11 07:02:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:19,693 INFO L470 AbstractCegarLoop]: Abstraction has 30566 states and 38715 transitions. [2022-01-11 07:02:19,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 07:02:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 30566 states and 38715 transitions. [2022-01-11 07:02:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 07:02:19,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:19,707 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 07:02:19,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 07:02:19,708 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1849332874, now seen corresponding path program 1 times [2022-01-11 07:02:19,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:19,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784111738] [2022-01-11 07:02:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:19,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:19,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:19,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784111738] [2022-01-11 07:02:19,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784111738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:19,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:19,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:02:19,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197793011] [2022-01-11 07:02:19,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:19,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:19,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:19,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:19,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:19,747 INFO L87 Difference]: Start difference. First operand 30566 states and 38715 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 07:02:21,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:21,362 INFO L93 Difference]: Finished difference Result 71610 states and 88863 transitions. [2022-01-11 07:02:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:21,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-01-11 07:02:21,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:21,443 INFO L225 Difference]: With dead ends: 71610 [2022-01-11 07:02:21,443 INFO L226 Difference]: Without dead ends: 43234 [2022-01-11 07:02:21,476 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 07:02:21,477 INFO L933 BasicCegarLoop]: 4352 mSDtfsCounter, 4204 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 4681 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:21,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4204 Valid, 4681 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43234 states. [2022-01-11 07:02:23,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43234 to 43040. [2022-01-11 07:02:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43040 states, 43038 states have (on average 1.2469677959012966) internal successors, (53667), 43039 states have internal predecessors, (53667), 0 states have call successors, (0), 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 07:02:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43040 states to 43040 states and 53667 transitions. [2022-01-11 07:02:23,489 INFO L78 Accepts]: Start accepts. Automaton has 43040 states and 53667 transitions. Word has length 140 [2022-01-11 07:02:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:23,490 INFO L470 AbstractCegarLoop]: Abstraction has 43040 states and 53667 transitions. [2022-01-11 07:02:23,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 07:02:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 43040 states and 53667 transitions. [2022-01-11 07:02:23,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-11 07:02:23,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:23,516 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-01-11 07:02:23,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 07:02:23,516 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:23,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:23,517 INFO L85 PathProgramCache]: Analyzing trace with hash 292694916, now seen corresponding path program 1 times [2022-01-11 07:02:23,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:23,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687133551] [2022-01-11 07:02:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:23,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-11 07:02:23,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:23,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687133551] [2022-01-11 07:02:23,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687133551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:23,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:23,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:23,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224800145] [2022-01-11 07:02:23,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:23,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:23,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:23,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:23,546 INFO L87 Difference]: Start difference. First operand 43040 states and 53667 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 07:02:25,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:25,501 INFO L93 Difference]: Finished difference Result 75448 states and 93154 transitions. [2022-01-11 07:02:25,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:25,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 157 [2022-01-11 07:02:25,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:25,572 INFO L225 Difference]: With dead ends: 75448 [2022-01-11 07:02:25,572 INFO L226 Difference]: Without dead ends: 44000 [2022-01-11 07:02:25,603 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 07:02:25,604 INFO L933 BasicCegarLoop]: 4364 mSDtfsCounter, 4272 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4272 SdHoareTripleChecker+Valid, 4741 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:25,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4272 Valid, 4741 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44000 states. [2022-01-11 07:02:27,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44000 to 42320. [2022-01-11 07:02:27,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42320 states, 42318 states have (on average 1.2301857365660003) internal successors, (52059), 42319 states have internal predecessors, (52059), 0 states have call successors, (0), 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 07:02:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42320 states to 42320 states and 52059 transitions. [2022-01-11 07:02:27,441 INFO L78 Accepts]: Start accepts. Automaton has 42320 states and 52059 transitions. Word has length 157 [2022-01-11 07:02:27,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:27,441 INFO L470 AbstractCegarLoop]: Abstraction has 42320 states and 52059 transitions. [2022-01-11 07:02:27,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 07:02:27,441 INFO L276 IsEmpty]: Start isEmpty. Operand 42320 states and 52059 transitions. [2022-01-11 07:02:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 07:02:27,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:27,467 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-01-11 07:02:27,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 07:02:27,467 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:27,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash 436238372, now seen corresponding path program 1 times [2022-01-11 07:02:27,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:27,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42387146] [2022-01-11 07:02:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:27,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 07:02:27,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:27,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42387146] [2022-01-11 07:02:27,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42387146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:27,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:27,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:27,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755910565] [2022-01-11 07:02:27,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:27,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:27,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:27,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:27,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:27,499 INFO L87 Difference]: Start difference. First operand 42320 states and 52059 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 07:02:28,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:28,901 INFO L93 Difference]: Finished difference Result 76996 states and 93573 transitions. [2022-01-11 07:02:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:28,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 158 [2022-01-11 07:02:28,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:28,962 INFO L225 Difference]: With dead ends: 76996 [2022-01-11 07:02:28,962 INFO L226 Difference]: Without dead ends: 36894 [2022-01-11 07:02:28,995 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 07:02:28,996 INFO L933 BasicCegarLoop]: 4622 mSDtfsCounter, 287 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 8955 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:28,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 8955 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:29,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36894 states. [2022-01-11 07:02:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36894 to 36892. [2022-01-11 07:02:30,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36892 states, 36890 states have (on average 1.225670913526701) internal successors, (45215), 36891 states have internal predecessors, (45215), 0 states have call successors, (0), 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 07:02:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36892 states to 36892 states and 45215 transitions. [2022-01-11 07:02:30,798 INFO L78 Accepts]: Start accepts. Automaton has 36892 states and 45215 transitions. Word has length 158 [2022-01-11 07:02:30,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:30,798 INFO L470 AbstractCegarLoop]: Abstraction has 36892 states and 45215 transitions. [2022-01-11 07:02:30,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 07:02:30,798 INFO L276 IsEmpty]: Start isEmpty. Operand 36892 states and 45215 transitions. [2022-01-11 07:02:30,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 07:02:30,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:30,815 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-01-11 07:02:30,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 07:02:30,815 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:30,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:30,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1433459742, now seen corresponding path program 1 times [2022-01-11 07:02:30,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:30,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402455001] [2022-01-11 07:02:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:30,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:30,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:30,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402455001] [2022-01-11 07:02:30,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402455001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:30,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:30,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:30,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392984302] [2022-01-11 07:02:30,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:30,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:30,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:30,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:30,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:30,859 INFO L87 Difference]: Start difference. First operand 36892 states and 45215 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 07:02:32,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:32,254 INFO L93 Difference]: Finished difference Result 61020 states and 74061 transitions. [2022-01-11 07:02:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:32,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-11 07:02:32,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:32,312 INFO L225 Difference]: With dead ends: 61020 [2022-01-11 07:02:32,313 INFO L226 Difference]: Without dead ends: 36894 [2022-01-11 07:02:32,332 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 07:02:32,332 INFO L933 BasicCegarLoop]: 4634 mSDtfsCounter, 278 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 8967 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:32,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 8967 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36894 states. [2022-01-11 07:02:33,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36894 to 36892. [2022-01-11 07:02:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36892 states, 36890 states have (on average 1.2214421252371916) internal successors, (45059), 36891 states have internal predecessors, (45059), 0 states have call successors, (0), 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 07:02:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36892 states to 36892 states and 45059 transitions. [2022-01-11 07:02:33,869 INFO L78 Accepts]: Start accepts. Automaton has 36892 states and 45059 transitions. Word has length 158 [2022-01-11 07:02:33,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:33,869 INFO L470 AbstractCegarLoop]: Abstraction has 36892 states and 45059 transitions. [2022-01-11 07:02:33,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 07:02:33,869 INFO L276 IsEmpty]: Start isEmpty. Operand 36892 states and 45059 transitions. [2022-01-11 07:02:33,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 07:02:33,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:33,887 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-01-11 07:02:33,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 07:02:33,887 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:33,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:33,887 INFO L85 PathProgramCache]: Analyzing trace with hash -525025355, now seen corresponding path program 1 times [2022-01-11 07:02:33,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:33,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722894538] [2022-01-11 07:02:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:33,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:33,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:33,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722894538] [2022-01-11 07:02:33,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722894538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:33,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:33,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:33,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124465654] [2022-01-11 07:02:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:33,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:33,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:33,930 INFO L87 Difference]: Start difference. First operand 36892 states and 45059 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 07:02:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:35,386 INFO L93 Difference]: Finished difference Result 60996 states and 73761 transitions. [2022-01-11 07:02:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:35,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-11 07:02:35,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:35,448 INFO L225 Difference]: With dead ends: 60996 [2022-01-11 07:02:35,448 INFO L226 Difference]: Without dead ends: 36894 [2022-01-11 07:02:35,474 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 07:02:35,474 INFO L933 BasicCegarLoop]: 4642 mSDtfsCounter, 278 mSDsluCounter, 4339 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 8981 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:35,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 8981 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:35,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36894 states. [2022-01-11 07:02:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36894 to 36892. [2022-01-11 07:02:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36892 states, 36890 states have (on average 1.2185145025752235) internal successors, (44951), 36891 states have internal predecessors, (44951), 0 states have call successors, (0), 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 07:02:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36892 states to 36892 states and 44951 transitions. [2022-01-11 07:02:37,294 INFO L78 Accepts]: Start accepts. Automaton has 36892 states and 44951 transitions. Word has length 158 [2022-01-11 07:02:37,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:37,294 INFO L470 AbstractCegarLoop]: Abstraction has 36892 states and 44951 transitions. [2022-01-11 07:02:37,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 07:02:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 36892 states and 44951 transitions. [2022-01-11 07:02:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 07:02:37,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:37,307 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 07:02:37,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 07:02:37,308 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:37,308 INFO L85 PathProgramCache]: Analyzing trace with hash 879108042, now seen corresponding path program 1 times [2022-01-11 07:02:37,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:37,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025407174] [2022-01-11 07:02:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:37,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 07:02:37,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:37,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025407174] [2022-01-11 07:02:37,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025407174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:37,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:37,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:37,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691410293] [2022-01-11 07:02:37,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:37,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:37,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:37,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:37,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:37,339 INFO L87 Difference]: Start difference. First operand 36892 states and 44951 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 07:02:38,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:38,752 INFO L93 Difference]: Finished difference Result 60124 states and 72706 transitions. [2022-01-11 07:02:38,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:38,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 158 [2022-01-11 07:02:38,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:38,816 INFO L225 Difference]: With dead ends: 60124 [2022-01-11 07:02:38,816 INFO L226 Difference]: Without dead ends: 38554 [2022-01-11 07:02:38,844 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 07:02:38,845 INFO L933 BasicCegarLoop]: 4557 mSDtfsCounter, 331 mSDsluCounter, 4293 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 8850 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:38,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 8850 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:38,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38554 states. [2022-01-11 07:02:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38554 to 36838. [2022-01-11 07:02:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36838 states, 36836 states have (on average 1.2035237267890107) internal successors, (44333), 36837 states have internal predecessors, (44333), 0 states have call successors, (0), 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 07:02:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36838 states to 36838 states and 44333 transitions. [2022-01-11 07:02:40,637 INFO L78 Accepts]: Start accepts. Automaton has 36838 states and 44333 transitions. Word has length 158 [2022-01-11 07:02:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:40,637 INFO L470 AbstractCegarLoop]: Abstraction has 36838 states and 44333 transitions. [2022-01-11 07:02:40,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 07:02:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 36838 states and 44333 transitions. [2022-01-11 07:02:40,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 07:02:40,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:40,652 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 07:02:40,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 07:02:40,652 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1949605532, now seen corresponding path program 1 times [2022-01-11 07:02:40,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:40,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108117434] [2022-01-11 07:02:40,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:40,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:40,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:40,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108117434] [2022-01-11 07:02:40,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108117434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:40,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:40,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:40,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319064937] [2022-01-11 07:02:40,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:40,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:40,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:40,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:40,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:40,686 INFO L87 Difference]: Start difference. First operand 36838 states and 44333 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 07:02:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:42,236 INFO L93 Difference]: Finished difference Result 61074 states and 72667 transitions. [2022-01-11 07:02:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:42,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-11 07:02:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:42,292 INFO L225 Difference]: With dead ends: 61074 [2022-01-11 07:02:42,292 INFO L226 Difference]: Without dead ends: 37008 [2022-01-11 07:02:42,314 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 07:02:42,314 INFO L933 BasicCegarLoop]: 4628 mSDtfsCounter, 305 mSDsluCounter, 4291 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 8919 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:42,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 8919 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:42,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37008 states. [2022-01-11 07:02:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37008 to 36838. [2022-01-11 07:02:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36838 states, 36836 states have (on average 1.1863665978933653) internal successors, (43701), 36837 states have internal predecessors, (43701), 0 states have call successors, (0), 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 07:02:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36838 states to 36838 states and 43701 transitions. [2022-01-11 07:02:43,883 INFO L78 Accepts]: Start accepts. Automaton has 36838 states and 43701 transitions. Word has length 158 [2022-01-11 07:02:43,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:43,884 INFO L470 AbstractCegarLoop]: Abstraction has 36838 states and 43701 transitions. [2022-01-11 07:02:43,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 07:02:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 36838 states and 43701 transitions. [2022-01-11 07:02:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 07:02:43,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:43,900 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 07:02:43,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 07:02:43,900 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:43,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1055862078, now seen corresponding path program 1 times [2022-01-11 07:02:43,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:43,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534197282] [2022-01-11 07:02:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:43,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:43,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:43,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534197282] [2022-01-11 07:02:43,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534197282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:43,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:43,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:43,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26920906] [2022-01-11 07:02:43,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:43,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:43,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:43,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:43,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:43,939 INFO L87 Difference]: Start difference. First operand 36838 states and 43701 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 07:02:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:45,110 INFO L93 Difference]: Finished difference Result 53312 states and 62747 transitions. [2022-01-11 07:02:45,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:45,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-11 07:02:45,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:45,158 INFO L225 Difference]: With dead ends: 53312 [2022-01-11 07:02:45,159 INFO L226 Difference]: Without dead ends: 27610 [2022-01-11 07:02:45,185 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 07:02:45,185 INFO L933 BasicCegarLoop]: 4614 mSDtfsCounter, 279 mSDsluCounter, 4277 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 8891 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:45,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 8891 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27610 states. [2022-01-11 07:02:46,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27610 to 27536. [2022-01-11 07:02:46,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27536 states, 27534 states have (on average 1.192162417374882) internal successors, (32825), 27535 states have internal predecessors, (32825), 0 states have call successors, (0), 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 07:02:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27536 states to 27536 states and 32825 transitions. [2022-01-11 07:02:46,508 INFO L78 Accepts]: Start accepts. Automaton has 27536 states and 32825 transitions. Word has length 159 [2022-01-11 07:02:46,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:46,508 INFO L470 AbstractCegarLoop]: Abstraction has 27536 states and 32825 transitions. [2022-01-11 07:02:46,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 07:02:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 27536 states and 32825 transitions. [2022-01-11 07:02:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 07:02:46,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:46,520 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 07:02:46,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 07:02:46,520 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:46,520 INFO L85 PathProgramCache]: Analyzing trace with hash 755364622, now seen corresponding path program 1 times [2022-01-11 07:02:46,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:46,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672591892] [2022-01-11 07:02:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:46,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:02:46,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:46,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672591892] [2022-01-11 07:02:46,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672591892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:46,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:46,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:02:46,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334294978] [2022-01-11 07:02:46,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:46,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:02:46,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:46,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:02:46,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:02:46,554 INFO L87 Difference]: Start difference. First operand 27536 states and 32825 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 07:02:47,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:47,717 INFO L93 Difference]: Finished difference Result 45260 states and 53059 transitions. [2022-01-11 07:02:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:02:47,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-11 07:02:47,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:47,764 INFO L225 Difference]: With dead ends: 45260 [2022-01-11 07:02:47,764 INFO L226 Difference]: Without dead ends: 27658 [2022-01-11 07:02:47,785 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 07:02:47,785 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 306 mSDsluCounter, 4282 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 8898 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:47,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 8898 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:47,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27658 states. [2022-01-11 07:02:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27658 to 27536. [2022-01-11 07:02:49,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27536 states, 27534 states have (on average 1.1754558001016924) internal successors, (32365), 27535 states have internal predecessors, (32365), 0 states have call successors, (0), 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 07:02:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27536 states to 27536 states and 32365 transitions. [2022-01-11 07:02:49,099 INFO L78 Accepts]: Start accepts. Automaton has 27536 states and 32365 transitions. Word has length 159 [2022-01-11 07:02:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:49,099 INFO L470 AbstractCegarLoop]: Abstraction has 27536 states and 32365 transitions. [2022-01-11 07:02:49,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 07:02:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 27536 states and 32365 transitions. [2022-01-11 07:02:49,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 07:02:49,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:49,110 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 07:02:49,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 07:02:49,110 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:49,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:49,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1302776373, now seen corresponding path program 1 times [2022-01-11 07:02:49,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:49,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197281092] [2022-01-11 07:02:49,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:49,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-11 07:02:49,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:49,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197281092] [2022-01-11 07:02:49,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197281092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:49,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:49,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:02:49,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564987821] [2022-01-11 07:02:49,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:49,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:02:49,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:49,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:02:49,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:02:49,159 INFO L87 Difference]: Start difference. First operand 27536 states and 32365 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 07:02:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:50,615 INFO L93 Difference]: Finished difference Result 49246 states and 56655 transitions. [2022-01-11 07:02:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:02:50,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 160 [2022-01-11 07:02:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:50,648 INFO L225 Difference]: With dead ends: 49246 [2022-01-11 07:02:50,648 INFO L226 Difference]: Without dead ends: 23854 [2022-01-11 07:02:50,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:02:50,665 INFO L933 BasicCegarLoop]: 4387 mSDtfsCounter, 1045 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:50,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 16800 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23854 states. [2022-01-11 07:02:51,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23854 to 20764. [2022-01-11 07:02:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20764 states, 20762 states have (on average 1.1788363356131395) internal successors, (24475), 20763 states have internal predecessors, (24475), 0 states have call successors, (0), 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 07:02:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20764 states to 20764 states and 24475 transitions. [2022-01-11 07:02:51,922 INFO L78 Accepts]: Start accepts. Automaton has 20764 states and 24475 transitions. Word has length 160 [2022-01-11 07:02:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:51,922 INFO L470 AbstractCegarLoop]: Abstraction has 20764 states and 24475 transitions. [2022-01-11 07:02:51,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 07:02:51,922 INFO L276 IsEmpty]: Start isEmpty. Operand 20764 states and 24475 transitions. [2022-01-11 07:02:51,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 07:02:51,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:51,929 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 07:02:51,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 07:02:51,929 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:51,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:51,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1124602991, now seen corresponding path program 1 times [2022-01-11 07:02:51,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:51,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677381537] [2022-01-11 07:02:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:51,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-11 07:02:51,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:51,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677381537] [2022-01-11 07:02:51,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677381537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:51,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:51,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:02:51,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797625379] [2022-01-11 07:02:51,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:51,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:02:51,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:51,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:02:51,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:02:51,975 INFO L87 Difference]: Start difference. First operand 20764 states and 24475 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 07:02:53,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:53,122 INFO L93 Difference]: Finished difference Result 37508 states and 42876 transitions. [2022-01-11 07:02:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:02:53,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 160 [2022-01-11 07:02:53,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:53,149 INFO L225 Difference]: With dead ends: 37508 [2022-01-11 07:02:53,150 INFO L226 Difference]: Without dead ends: 18900 [2022-01-11 07:02:53,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:02:53,161 INFO L933 BasicCegarLoop]: 4333 mSDtfsCounter, 896 mSDsluCounter, 12471 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 16804 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:53,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 16804 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:53,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18900 states. [2022-01-11 07:02:54,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18900 to 17048. [2022-01-11 07:02:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17048 states, 17046 states have (on average 1.1793382611756424) internal successors, (20103), 17047 states have internal predecessors, (20103), 0 states have call successors, (0), 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 07:02:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17048 states to 17048 states and 20103 transitions. [2022-01-11 07:02:54,042 INFO L78 Accepts]: Start accepts. Automaton has 17048 states and 20103 transitions. Word has length 160 [2022-01-11 07:02:54,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:54,042 INFO L470 AbstractCegarLoop]: Abstraction has 17048 states and 20103 transitions. [2022-01-11 07:02:54,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 07:02:54,042 INFO L276 IsEmpty]: Start isEmpty. Operand 17048 states and 20103 transitions. [2022-01-11 07:02:54,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 07:02:54,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:54,047 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-11 07:02:54,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 07:02:54,048 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:54,048 INFO L85 PathProgramCache]: Analyzing trace with hash -325117326, now seen corresponding path program 1 times [2022-01-11 07:02:54,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:54,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033121751] [2022-01-11 07:02:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:54,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-11 07:02:54,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:54,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033121751] [2022-01-11 07:02:54,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033121751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:54,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:54,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:02:54,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241914573] [2022-01-11 07:02:54,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:54,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:02:54,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:02:54,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:02:54,094 INFO L87 Difference]: Start difference. First operand 17048 states and 20103 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 07:02:54,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:02:54,707 INFO L93 Difference]: Finished difference Result 23497 states and 27035 transitions. [2022-01-11 07:02:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:02:54,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 160 [2022-01-11 07:02:54,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:02:54,716 INFO L225 Difference]: With dead ends: 23497 [2022-01-11 07:02:54,716 INFO L226 Difference]: Without dead ends: 6077 [2022-01-11 07:02:54,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:02:54,728 INFO L933 BasicCegarLoop]: 4333 mSDtfsCounter, 770 mSDsluCounter, 12423 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 16756 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:02:54,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 16756 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:02:54,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6077 states. [2022-01-11 07:02:54,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6077 to 5939. [2022-01-11 07:02:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 5937 states have (on average 1.3442816237156814) internal successors, (7981), 5938 states have internal predecessors, (7981), 0 states have call successors, (0), 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 07:02:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 7981 transitions. [2022-01-11 07:02:54,985 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 7981 transitions. Word has length 160 [2022-01-11 07:02:54,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:02:54,985 INFO L470 AbstractCegarLoop]: Abstraction has 5939 states and 7981 transitions. [2022-01-11 07:02:54,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 07:02:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 7981 transitions. [2022-01-11 07:02:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-11 07:02:54,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:02:54,991 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:54,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 07:02:54,991 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:02:54,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:02:54,991 INFO L85 PathProgramCache]: Analyzing trace with hash 224011255, now seen corresponding path program 1 times [2022-01-11 07:02:54,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:02:54,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377874459] [2022-01-11 07:02:54,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:02:54,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:02:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:02:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 07:02:55,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:02:55,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377874459] [2022-01-11 07:02:55,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377874459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:02:55,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:02:55,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 07:02:55,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752812486] [2022-01-11 07:02:55,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:02:55,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 07:02:55,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:02:55,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 07:02:55,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 07:02:55,297 INFO L87 Difference]: Start difference. First operand 5939 states and 7981 transitions. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)