/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.12.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:12:50,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:12:50,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:12:50,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:12:50,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:12:50,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:12:50,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:12:50,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:12:50,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:12:50,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:12:50,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:12:50,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:12:50,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:12:50,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:12:50,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:12:50,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:12:50,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:12:50,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:12:50,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:12:50,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:12:50,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:12:50,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:12:50,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:12:50,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:12:50,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:12:50,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:12:50,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:12:50,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:12:50,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:12:50,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:12:50,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:12:50,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:12:50,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:12:50,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:12:50,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:12:50,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:12:50,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:12:50,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:12:50,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:12:50,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:12:50,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:12:50,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 01:12:50,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:12:50,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:12:50,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:12:50,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:12:50,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:12:50,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:12:50,939 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:12:50,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:12:50,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:12:50,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:12:50,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:12:50,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:12:50,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:12:50,940 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:12:50,940 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:12:50,940 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:12:50,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:12:50,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:12:50,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:12:50,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:12:50,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:12:50,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:12:50,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:12:50,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:12:50,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:12:50,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:12:50,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:12:50,943 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:12:50,943 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:12:50,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:12:50,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:12:50,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:12:50,945 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:12:50,945 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:12:51,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:12:51,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:12:51,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:12:51,168 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:12:51,169 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:12:51,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.12.cil-2.c [2022-01-11 01:12:51,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2619fc874/32d5ad7cd5424e4c8ad9bd7a847ae1a8/FLAG0a40a7540 [2022-01-11 01:12:51,943 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:12:51,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.12.cil-2.c [2022-01-11 01:12:52,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2619fc874/32d5ad7cd5424e4c8ad9bd7a847ae1a8/FLAG0a40a7540 [2022-01-11 01:12:52,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2619fc874/32d5ad7cd5424e4c8ad9bd7a847ae1a8 [2022-01-11 01:12:52,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:12:52,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:12:52,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:12:52,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:12:52,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:12:52,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:12:52" (1/1) ... [2022-01-11 01:12:52,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f553723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:52, skipping insertion in model container [2022-01-11 01:12:52,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:12:52" (1/1) ... [2022-01-11 01:12:52,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:12:52,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:12:54,217 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_label42+token_ring.12.cil-2.c[378560,378573] [2022-01-11 01:12:54,245 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_label42+token_ring.12.cil-2.c[383339,383352] [2022-01-11 01:12:54,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:12:54,492 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:12:55,258 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_label42+token_ring.12.cil-2.c[378560,378573] [2022-01-11 01:12:55,271 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_label42+token_ring.12.cil-2.c[383339,383352] [2022-01-11 01:12:55,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:12:55,353 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:12:55,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:55 WrapperNode [2022-01-11 01:12:55,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:12:55,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:12:55,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:12:55,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:12:55,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:55" (1/1) ... [2022-01-11 01:12:55,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:55" (1/1) ... [2022-01-11 01:12:55,883 INFO L137 Inliner]: procedures = 69, calls = 77, calls flagged for inlining = 72, calls inlined = 279, statements flattened = 16469 [2022-01-11 01:12:55,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:12:55,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:12:55,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:12:55,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:12:55,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:55" (1/1) ... [2022-01-11 01:12:55,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:55" (1/1) ... [2022-01-11 01:12:56,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:55" (1/1) ... [2022-01-11 01:12:56,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:55" (1/1) ... [2022-01-11 01:12:56,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:55" (1/1) ... [2022-01-11 01:12:56,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:55" (1/1) ... [2022-01-11 01:12:56,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:55" (1/1) ... [2022-01-11 01:12:56,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:12:56,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:12:56,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:12:56,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:12:56,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:55" (1/1) ... [2022-01-11 01:12:56,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:12:56,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:12:56,508 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 01:12:56,533 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 01:12:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:12:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:12:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:12:56,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:12:56,721 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:12:56,722 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:13:05,785 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:13:05,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:13:05,833 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-01-11 01:13:05,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:13:05 BoogieIcfgContainer [2022-01-11 01:13:05,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:13:05,841 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:13:05,841 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:13:05,842 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:13:05,844 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:13:05" (1/1) ... [2022-01-11 01:13:07,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:13:07 BasicIcfg [2022-01-11 01:13:07,509 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:13:07,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:13:07,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:13:07,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:13:07,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:12:52" (1/4) ... [2022-01-11 01:13:07,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167672d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:13:07, skipping insertion in model container [2022-01-11 01:13:07,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:55" (2/4) ... [2022-01-11 01:13:07,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167672d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:13:07, skipping insertion in model container [2022-01-11 01:13:07,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:13:05" (3/4) ... [2022-01-11 01:13:07,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167672d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:13:07, skipping insertion in model container [2022-01-11 01:13:07,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:13:07" (4/4) ... [2022-01-11 01:13:07,517 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.12.cil-2.cTransformedIcfg [2022-01-11 01:13:07,521 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:13:07,521 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 01:13:07,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:13:07,586 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 01:13:07,587 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 01:13:07,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 3975 states, 3972 states have (on average 1.70392749244713) internal successors, (6768), 3974 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states 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 01:13:07,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:07,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:07,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:07,682 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:07,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:07,686 INFO L85 PathProgramCache]: Analyzing trace with hash 900996116, now seen corresponding path program 1 times [2022-01-11 01:13:07,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:07,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471093733] [2022-01-11 01:13:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:07,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:08,222 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 01:13:08,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:08,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471093733] [2022-01-11 01:13:08,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471093733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:08,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:08,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:08,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860777863] [2022-01-11 01:13:08,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:08,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:08,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:08,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:08,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:08,263 INFO L87 Difference]: Start difference. First operand has 3975 states, 3972 states have (on average 1.70392749244713) internal successors, (6768), 3974 states have internal predecessors, (6768), 0 states have call successors, (0), 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 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:08,595 INFO L93 Difference]: Finished difference Result 9465 states and 15784 transitions. [2022-01-11 01:13:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:08,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:08,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:08,637 INFO L225 Difference]: With dead ends: 9465 [2022-01-11 01:13:08,637 INFO L226 Difference]: Without dead ends: 5439 [2022-01-11 01:13:08,652 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 01:13:08,657 INFO L933 BasicCegarLoop]: 6667 mSDtfsCounter, 6516 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6516 SdHoareTripleChecker+Valid, 9046 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:08,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6516 Valid, 9046 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:13:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5439 states. [2022-01-11 01:13:08,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5439 to 5437. [2022-01-11 01:13:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6281508739650414) internal successors, (8849), 5436 states have internal predecessors, (8849), 0 states have call successors, (0), 0 states 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 01:13:08,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8849 transitions. [2022-01-11 01:13:08,850 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8849 transitions. Word has length 165 [2022-01-11 01:13:08,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:08,851 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8849 transitions. [2022-01-11 01:13:08,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8849 transitions. [2022-01-11 01:13:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:08,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:08,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:08,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:13:08,860 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:08,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1696253644, now seen corresponding path program 1 times [2022-01-11 01:13:08,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:08,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827209390] [2022-01-11 01:13:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:08,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:08,951 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 01:13:08,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:08,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827209390] [2022-01-11 01:13:08,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827209390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:08,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:08,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:08,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476763342] [2022-01-11 01:13:08,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:08,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:08,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:08,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:08,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:08,955 INFO L87 Difference]: Start difference. First operand 5437 states and 8849 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:09,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:09,088 INFO L93 Difference]: Finished difference Result 8732 states and 13704 transitions. [2022-01-11 01:13:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:09,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:09,110 INFO L225 Difference]: With dead ends: 8732 [2022-01-11 01:13:09,110 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:09,119 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 01:13:09,120 INFO L933 BasicCegarLoop]: 6594 mSDtfsCounter, 6578 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6578 SdHoareTripleChecker+Valid, 6594 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 01:13:09,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6578 Valid, 6594 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:09,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:09,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6266789328426863) internal successors, (8841), 5436 states have internal predecessors, (8841), 0 states have call successors, (0), 0 states 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 01:13:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8841 transitions. [2022-01-11 01:13:09,297 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8841 transitions. Word has length 165 [2022-01-11 01:13:09,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:09,298 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8841 transitions. [2022-01-11 01:13:09,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8841 transitions. [2022-01-11 01:13:09,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:09,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:09,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:09,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:13:09,310 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1845173844, now seen corresponding path program 1 times [2022-01-11 01:13:09,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:09,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808818726] [2022-01-11 01:13:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:09,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:09,417 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 01:13:09,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:09,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808818726] [2022-01-11 01:13:09,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808818726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:09,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:09,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:09,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535749059] [2022-01-11 01:13:09,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:09,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:09,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:09,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:09,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:09,420 INFO L87 Difference]: Start difference. First operand 5437 states and 8841 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:09,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:09,546 INFO L93 Difference]: Finished difference Result 8731 states and 13687 transitions. [2022-01-11 01:13:09,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:09,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:09,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:09,567 INFO L225 Difference]: With dead ends: 8731 [2022-01-11 01:13:09,568 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:09,577 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 01:13:09,580 INFO L933 BasicCegarLoop]: 6589 mSDtfsCounter, 6572 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6572 SdHoareTripleChecker+Valid, 6589 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 01:13:09,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6572 Valid, 6589 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:09,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6252069917203311) internal successors, (8833), 5436 states have internal predecessors, (8833), 0 states have call successors, (0), 0 states 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 01:13:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8833 transitions. [2022-01-11 01:13:09,877 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8833 transitions. Word has length 165 [2022-01-11 01:13:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:09,878 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8833 transitions. [2022-01-11 01:13:09,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:09,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8833 transitions. [2022-01-11 01:13:09,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:09,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:09,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:09,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:13:09,882 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:09,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1543771444, now seen corresponding path program 1 times [2022-01-11 01:13:09,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:09,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60549210] [2022-01-11 01:13:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:09,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:09,977 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 01:13:09,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:09,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60549210] [2022-01-11 01:13:09,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60549210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:09,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:09,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:09,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350495054] [2022-01-11 01:13:09,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:09,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:09,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:09,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:09,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:09,981 INFO L87 Difference]: Start difference. First operand 5437 states and 8833 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:10,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:10,106 INFO L93 Difference]: Finished difference Result 8730 states and 13670 transitions. [2022-01-11 01:13:10,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:10,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:10,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:10,126 INFO L225 Difference]: With dead ends: 8730 [2022-01-11 01:13:10,127 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:10,134 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 01:13:10,140 INFO L933 BasicCegarLoop]: 6584 mSDtfsCounter, 6566 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6566 SdHoareTripleChecker+Valid, 6584 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 01:13:10,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6566 Valid, 6584 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:10,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:10,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:10,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6237350505979762) internal successors, (8825), 5436 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states 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 01:13:10,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8825 transitions. [2022-01-11 01:13:10,290 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8825 transitions. Word has length 165 [2022-01-11 01:13:10,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:10,291 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8825 transitions. [2022-01-11 01:13:10,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:10,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8825 transitions. [2022-01-11 01:13:10,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:10,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:10,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:10,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:13:10,293 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:10,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:10,294 INFO L85 PathProgramCache]: Analyzing trace with hash -544161196, now seen corresponding path program 1 times [2022-01-11 01:13:10,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:10,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160144201] [2022-01-11 01:13:10,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:10,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:10,383 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 01:13:10,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:10,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160144201] [2022-01-11 01:13:10,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160144201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:10,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:10,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:10,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191267772] [2022-01-11 01:13:10,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:10,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:10,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:10,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:10,385 INFO L87 Difference]: Start difference. First operand 5437 states and 8825 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:10,521 INFO L93 Difference]: Finished difference Result 8729 states and 13653 transitions. [2022-01-11 01:13:10,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:10,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:10,551 INFO L225 Difference]: With dead ends: 8729 [2022-01-11 01:13:10,551 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:10,557 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 01:13:10,558 INFO L933 BasicCegarLoop]: 6579 mSDtfsCounter, 6560 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6560 SdHoareTripleChecker+Valid, 6579 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 01:13:10,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6560 Valid, 6579 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:10,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:10,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.622263109475621) internal successors, (8817), 5436 states have internal predecessors, (8817), 0 states have call successors, (0), 0 states 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 01:13:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8817 transitions. [2022-01-11 01:13:10,713 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8817 transitions. Word has length 165 [2022-01-11 01:13:10,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:10,717 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8817 transitions. [2022-01-11 01:13:10,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:10,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8817 transitions. [2022-01-11 01:13:10,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:10,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:10,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:10,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:13:10,720 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:10,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:10,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1328148788, now seen corresponding path program 1 times [2022-01-11 01:13:10,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:10,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251925625] [2022-01-11 01:13:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:10,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:10,790 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 01:13:10,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:10,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251925625] [2022-01-11 01:13:10,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251925625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:10,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:10,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:10,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536693351] [2022-01-11 01:13:10,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:10,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:10,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:10,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:10,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:10,792 INFO L87 Difference]: Start difference. First operand 5437 states and 8817 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:10,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:10,972 INFO L93 Difference]: Finished difference Result 8728 states and 13636 transitions. [2022-01-11 01:13:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:10,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:10,984 INFO L225 Difference]: With dead ends: 8728 [2022-01-11 01:13:10,984 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:10,989 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 01:13:10,991 INFO L933 BasicCegarLoop]: 6574 mSDtfsCounter, 6554 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6554 SdHoareTripleChecker+Valid, 6574 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 01:13:10,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6554 Valid, 6574 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:11,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6207911683532659) internal successors, (8809), 5436 states have internal predecessors, (8809), 0 states have call successors, (0), 0 states 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 01:13:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8809 transitions. [2022-01-11 01:13:11,179 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8809 transitions. Word has length 165 [2022-01-11 01:13:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:11,180 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8809 transitions. [2022-01-11 01:13:11,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8809 transitions. [2022-01-11 01:13:11,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:11,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:11,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:11,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:13:11,183 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:11,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:11,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1111451220, now seen corresponding path program 1 times [2022-01-11 01:13:11,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:11,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422303016] [2022-01-11 01:13:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:11,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:11,236 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 01:13:11,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:11,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422303016] [2022-01-11 01:13:11,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422303016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:11,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:11,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:11,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101468001] [2022-01-11 01:13:11,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:11,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:11,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:11,239 INFO L87 Difference]: Start difference. First operand 5437 states and 8809 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:11,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:11,427 INFO L93 Difference]: Finished difference Result 8727 states and 13619 transitions. [2022-01-11 01:13:11,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:11,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:11,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:11,439 INFO L225 Difference]: With dead ends: 8727 [2022-01-11 01:13:11,439 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:11,446 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 01:13:11,447 INFO L933 BasicCegarLoop]: 6569 mSDtfsCounter, 6548 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6548 SdHoareTripleChecker+Valid, 6569 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 01:13:11,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6548 Valid, 6569 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:11,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:11,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:11,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6193192272309107) internal successors, (8801), 5436 states have internal predecessors, (8801), 0 states have call successors, (0), 0 states 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 01:13:11,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8801 transitions. [2022-01-11 01:13:11,645 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8801 transitions. Word has length 165 [2022-01-11 01:13:11,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:11,645 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8801 transitions. [2022-01-11 01:13:11,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:11,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8801 transitions. [2022-01-11 01:13:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:11,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:11,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:11,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:13:11,648 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:11,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:11,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1243008308, now seen corresponding path program 1 times [2022-01-11 01:13:11,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:11,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788368677] [2022-01-11 01:13:11,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:11,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:11,705 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 01:13:11,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:11,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788368677] [2022-01-11 01:13:11,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788368677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:11,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:11,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:11,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828484180] [2022-01-11 01:13:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:11,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:11,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:11,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:11,707 INFO L87 Difference]: Start difference. First operand 5437 states and 8801 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:11,880 INFO L93 Difference]: Finished difference Result 8726 states and 13602 transitions. [2022-01-11 01:13:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:11,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:11,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:11,894 INFO L225 Difference]: With dead ends: 8726 [2022-01-11 01:13:11,894 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:11,903 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 01:13:11,903 INFO L933 BasicCegarLoop]: 6564 mSDtfsCounter, 6542 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6542 SdHoareTripleChecker+Valid, 6564 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 01:13:11,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6542 Valid, 6564 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:11,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:12,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6178472861085555) internal successors, (8793), 5436 states have internal predecessors, (8793), 0 states have call successors, (0), 0 states 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 01:13:12,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8793 transitions. [2022-01-11 01:13:12,101 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8793 transitions. Word has length 165 [2022-01-11 01:13:12,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:12,101 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8793 transitions. [2022-01-11 01:13:12,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8793 transitions. [2022-01-11 01:13:12,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:12,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:12,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:12,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:13:12,104 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:12,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:12,104 INFO L85 PathProgramCache]: Analyzing trace with hash 138873428, now seen corresponding path program 1 times [2022-01-11 01:13:12,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:12,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109536031] [2022-01-11 01:13:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:12,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:12,179 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 01:13:12,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:12,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109536031] [2022-01-11 01:13:12,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109536031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:12,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:12,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:12,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716059295] [2022-01-11 01:13:12,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:12,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:12,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:12,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:12,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:12,182 INFO L87 Difference]: Start difference. First operand 5437 states and 8793 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:12,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:12,368 INFO L93 Difference]: Finished difference Result 8725 states and 13585 transitions. [2022-01-11 01:13:12,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:12,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:12,380 INFO L225 Difference]: With dead ends: 8725 [2022-01-11 01:13:12,381 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:12,387 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 01:13:12,389 INFO L933 BasicCegarLoop]: 6559 mSDtfsCounter, 6536 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6536 SdHoareTripleChecker+Valid, 6559 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 01:13:12,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6536 Valid, 6559 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:12,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:12,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6163753449862006) internal successors, (8785), 5436 states have internal predecessors, (8785), 0 states have call successors, (0), 0 states 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 01:13:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8785 transitions. [2022-01-11 01:13:12,588 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8785 transitions. Word has length 165 [2022-01-11 01:13:12,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:12,589 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8785 transitions. [2022-01-11 01:13:12,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:12,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8785 transitions. [2022-01-11 01:13:12,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:12,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:12,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:12,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:13:12,594 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:12,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:12,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1836406476, now seen corresponding path program 1 times [2022-01-11 01:13:12,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:12,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53289438] [2022-01-11 01:13:12,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:12,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:12,652 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 01:13:12,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:12,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53289438] [2022-01-11 01:13:12,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53289438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:12,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:12,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:12,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123490252] [2022-01-11 01:13:12,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:12,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:12,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:12,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:12,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:12,655 INFO L87 Difference]: Start difference. First operand 5437 states and 8785 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:12,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:12,878 INFO L93 Difference]: Finished difference Result 8724 states and 13568 transitions. [2022-01-11 01:13:12,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:12,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:12,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:12,890 INFO L225 Difference]: With dead ends: 8724 [2022-01-11 01:13:12,890 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:12,895 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 01:13:12,896 INFO L933 BasicCegarLoop]: 6554 mSDtfsCounter, 6530 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6530 SdHoareTripleChecker+Valid, 6554 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 01:13:12,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6530 Valid, 6554 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:12,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:13,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6149034038638455) internal successors, (8777), 5436 states have internal predecessors, (8777), 0 states have call successors, (0), 0 states 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 01:13:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8777 transitions. [2022-01-11 01:13:13,095 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8777 transitions. Word has length 165 [2022-01-11 01:13:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:13,095 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8777 transitions. [2022-01-11 01:13:13,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:13,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8777 transitions. [2022-01-11 01:13:13,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:13,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:13,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:13,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:13:13,098 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:13,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:13,099 INFO L85 PathProgramCache]: Analyzing trace with hash 870821460, now seen corresponding path program 1 times [2022-01-11 01:13:13,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:13,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97958220] [2022-01-11 01:13:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:13,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:13,152 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 01:13:13,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:13,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97958220] [2022-01-11 01:13:13,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97958220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:13,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:13,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:13,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616005979] [2022-01-11 01:13:13,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:13,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:13,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:13,155 INFO L87 Difference]: Start difference. First operand 5437 states and 8777 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:13,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:13,329 INFO L93 Difference]: Finished difference Result 8723 states and 13551 transitions. [2022-01-11 01:13:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:13,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:13,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:13,342 INFO L225 Difference]: With dead ends: 8723 [2022-01-11 01:13:13,342 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:13,348 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 01:13:13,349 INFO L933 BasicCegarLoop]: 6549 mSDtfsCounter, 6524 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6524 SdHoareTripleChecker+Valid, 6549 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 01:13:13,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6524 Valid, 6549 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:13,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:13,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6134314627414903) internal successors, (8769), 5436 states have internal predecessors, (8769), 0 states have call successors, (0), 0 states 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 01:13:13,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8769 transitions. [2022-01-11 01:13:13,568 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8769 transitions. Word has length 165 [2022-01-11 01:13:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:13,570 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8769 transitions. [2022-01-11 01:13:13,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:13,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8769 transitions. [2022-01-11 01:13:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:13,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:13,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:13,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:13:13,572 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:13,573 INFO L85 PathProgramCache]: Analyzing trace with hash -565869260, now seen corresponding path program 1 times [2022-01-11 01:13:13,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:13,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575223337] [2022-01-11 01:13:13,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:13,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:13,621 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 01:13:13,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:13,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575223337] [2022-01-11 01:13:13,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575223337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:13,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:13,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:13,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847864897] [2022-01-11 01:13:13,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:13,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:13,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:13,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:13,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:13,623 INFO L87 Difference]: Start difference. First operand 5437 states and 8769 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:13,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:13,788 INFO L93 Difference]: Finished difference Result 8722 states and 13534 transitions. [2022-01-11 01:13:13,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:13,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:13,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:13,799 INFO L225 Difference]: With dead ends: 8722 [2022-01-11 01:13:13,799 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:13,804 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 01:13:13,805 INFO L933 BasicCegarLoop]: 6544 mSDtfsCounter, 6518 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6518 SdHoareTripleChecker+Valid, 6544 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 01:13:13,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6518 Valid, 6544 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:13,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:13,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:13,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6119595216191351) internal successors, (8761), 5436 states have internal predecessors, (8761), 0 states have call successors, (0), 0 states 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 01:13:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8761 transitions. [2022-01-11 01:13:13,969 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8761 transitions. Word has length 165 [2022-01-11 01:13:13,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:13,969 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8761 transitions. [2022-01-11 01:13:13,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8761 transitions. [2022-01-11 01:13:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:13,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:13,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:13,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:13:13,972 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:13,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:13,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1465995860, now seen corresponding path program 1 times [2022-01-11 01:13:13,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:13,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526572624] [2022-01-11 01:13:13,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:13,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:14,021 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 01:13:14,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:14,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526572624] [2022-01-11 01:13:14,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526572624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:14,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:14,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:14,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790636494] [2022-01-11 01:13:14,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:14,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:14,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:14,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:14,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:14,023 INFO L87 Difference]: Start difference. First operand 5437 states and 8761 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:14,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:14,217 INFO L93 Difference]: Finished difference Result 8721 states and 13517 transitions. [2022-01-11 01:13:14,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:14,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:14,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:14,229 INFO L225 Difference]: With dead ends: 8721 [2022-01-11 01:13:14,229 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:14,235 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 01:13:14,236 INFO L933 BasicCegarLoop]: 6509 mSDtfsCounter, 6365 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6365 SdHoareTripleChecker+Valid, 6637 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:14,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6365 Valid, 6637 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:14,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:14,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6053357865685371) internal successors, (8725), 5436 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states 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 01:13:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8725 transitions. [2022-01-11 01:13:14,398 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8725 transitions. Word has length 165 [2022-01-11 01:13:14,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:14,399 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8725 transitions. [2022-01-11 01:13:14,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:14,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8725 transitions. [2022-01-11 01:13:14,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:14,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:14,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:14,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:13:14,401 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:14,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:14,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1090569293, now seen corresponding path program 1 times [2022-01-11 01:13:14,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:14,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436197854] [2022-01-11 01:13:14,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:14,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:14,447 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 01:13:14,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:14,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436197854] [2022-01-11 01:13:14,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436197854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:14,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:14,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:14,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442011116] [2022-01-11 01:13:14,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:14,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:14,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:14,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:14,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:14,449 INFO L87 Difference]: Start difference. First operand 5437 states and 8725 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:14,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:14,644 INFO L93 Difference]: Finished difference Result 8720 states and 13444 transitions. [2022-01-11 01:13:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:14,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:14,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:14,656 INFO L225 Difference]: With dead ends: 8720 [2022-01-11 01:13:14,656 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:14,663 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 01:13:14,663 INFO L933 BasicCegarLoop]: 6489 mSDtfsCounter, 6345 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6345 SdHoareTripleChecker+Valid, 6616 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:14,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6345 Valid, 6616 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:14,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5987120515179394) internal successors, (8689), 5436 states have internal predecessors, (8689), 0 states have call successors, (0), 0 states 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 01:13:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8689 transitions. [2022-01-11 01:13:14,833 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8689 transitions. Word has length 165 [2022-01-11 01:13:14,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:14,833 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8689 transitions. [2022-01-11 01:13:14,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:14,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8689 transitions. [2022-01-11 01:13:14,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:14,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:14,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:14,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:13:14,836 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:14,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:14,837 INFO L85 PathProgramCache]: Analyzing trace with hash -797100398, now seen corresponding path program 1 times [2022-01-11 01:13:14,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:14,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438253444] [2022-01-11 01:13:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:14,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:14,881 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 01:13:14,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:14,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438253444] [2022-01-11 01:13:14,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438253444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:14,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:14,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:14,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514289325] [2022-01-11 01:13:14,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:14,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:14,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:14,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:14,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:14,883 INFO L87 Difference]: Start difference. First operand 5437 states and 8689 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:15,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:15,072 INFO L93 Difference]: Finished difference Result 8718 states and 13369 transitions. [2022-01-11 01:13:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:15,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:15,083 INFO L225 Difference]: With dead ends: 8718 [2022-01-11 01:13:15,084 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:15,090 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 01:13:15,091 INFO L933 BasicCegarLoop]: 6469 mSDtfsCounter, 6324 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6324 SdHoareTripleChecker+Valid, 6595 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:15,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6324 Valid, 6595 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5920883164673414) internal successors, (8653), 5436 states have internal predecessors, (8653), 0 states have call successors, (0), 0 states 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 01:13:15,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8653 transitions. [2022-01-11 01:13:15,260 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8653 transitions. Word has length 165 [2022-01-11 01:13:15,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:15,260 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8653 transitions. [2022-01-11 01:13:15,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:15,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8653 transitions. [2022-01-11 01:13:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:15,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:15,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:15,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:13:15,262 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:15,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:15,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1292804111, now seen corresponding path program 1 times [2022-01-11 01:13:15,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:15,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495629934] [2022-01-11 01:13:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:15,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:15,308 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 01:13:15,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:15,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495629934] [2022-01-11 01:13:15,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495629934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:15,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:15,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:15,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350400641] [2022-01-11 01:13:15,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:15,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:15,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:15,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:15,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:15,312 INFO L87 Difference]: Start difference. First operand 5437 states and 8653 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:15,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:15,568 INFO L93 Difference]: Finished difference Result 8717 states and 13296 transitions. [2022-01-11 01:13:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:15,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:15,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:15,578 INFO L225 Difference]: With dead ends: 8717 [2022-01-11 01:13:15,578 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:15,582 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 01:13:15,583 INFO L933 BasicCegarLoop]: 6449 mSDtfsCounter, 6304 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6304 SdHoareTripleChecker+Valid, 6574 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:15,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6304 Valid, 6574 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5854645814167434) internal successors, (8617), 5436 states have internal predecessors, (8617), 0 states have call successors, (0), 0 states 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 01:13:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8617 transitions. [2022-01-11 01:13:15,758 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8617 transitions. Word has length 165 [2022-01-11 01:13:15,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:15,759 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8617 transitions. [2022-01-11 01:13:15,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:15,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8617 transitions. [2022-01-11 01:13:15,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:15,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:15,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:15,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:13:15,761 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:15,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:15,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1517848144, now seen corresponding path program 1 times [2022-01-11 01:13:15,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:15,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917152710] [2022-01-11 01:13:15,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:15,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:15,803 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 01:13:15,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:15,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917152710] [2022-01-11 01:13:15,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917152710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:15,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:15,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:15,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303058434] [2022-01-11 01:13:15,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:15,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:15,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:15,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:15,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:15,805 INFO L87 Difference]: Start difference. First operand 5437 states and 8617 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:16,001 INFO L93 Difference]: Finished difference Result 8716 states and 13223 transitions. [2022-01-11 01:13:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:16,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:16,011 INFO L225 Difference]: With dead ends: 8716 [2022-01-11 01:13:16,012 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:16,016 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 01:13:16,016 INFO L933 BasicCegarLoop]: 6429 mSDtfsCounter, 6284 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6284 SdHoareTripleChecker+Valid, 6553 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:16,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6284 Valid, 6553 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:16,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:16,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:16,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5788408463661454) internal successors, (8581), 5436 states have internal predecessors, (8581), 0 states have call successors, (0), 0 states 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 01:13:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8581 transitions. [2022-01-11 01:13:16,191 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8581 transitions. Word has length 165 [2022-01-11 01:13:16,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:16,191 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8581 transitions. [2022-01-11 01:13:16,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8581 transitions. [2022-01-11 01:13:16,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:16,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:16,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:16,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:13:16,193 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:16,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1090166319, now seen corresponding path program 1 times [2022-01-11 01:13:16,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:16,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285327755] [2022-01-11 01:13:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:16,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:16,237 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 01:13:16,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:16,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285327755] [2022-01-11 01:13:16,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285327755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:16,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:16,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:16,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374365361] [2022-01-11 01:13:16,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:16,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:16,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:16,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:16,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:16,239 INFO L87 Difference]: Start difference. First operand 5437 states and 8581 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:16,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:16,452 INFO L93 Difference]: Finished difference Result 8715 states and 13150 transitions. [2022-01-11 01:13:16,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:16,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:16,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:16,465 INFO L225 Difference]: With dead ends: 8715 [2022-01-11 01:13:16,466 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:16,472 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 01:13:16,473 INFO L933 BasicCegarLoop]: 6409 mSDtfsCounter, 6264 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6264 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:16,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6264 Valid, 6532 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:16,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:16,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:16,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5722171113155474) internal successors, (8545), 5436 states have internal predecessors, (8545), 0 states have call successors, (0), 0 states 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 01:13:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8545 transitions. [2022-01-11 01:13:16,659 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8545 transitions. Word has length 165 [2022-01-11 01:13:16,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:16,660 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8545 transitions. [2022-01-11 01:13:16,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:16,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8545 transitions. [2022-01-11 01:13:16,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:16,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:16,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:16,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:13:16,662 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:16,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:16,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1064043278, now seen corresponding path program 1 times [2022-01-11 01:13:16,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:16,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460957129] [2022-01-11 01:13:16,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:16,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:16,712 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 01:13:16,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:16,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460957129] [2022-01-11 01:13:16,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460957129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:16,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:16,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:16,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171527866] [2022-01-11 01:13:16,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:16,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:16,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:16,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:16,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:16,715 INFO L87 Difference]: Start difference. First operand 5437 states and 8545 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:16,933 INFO L93 Difference]: Finished difference Result 8714 states and 13077 transitions. [2022-01-11 01:13:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:16,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:16,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:16,950 INFO L225 Difference]: With dead ends: 8714 [2022-01-11 01:13:16,950 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:16,956 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 01:13:16,957 INFO L933 BasicCegarLoop]: 6389 mSDtfsCounter, 6244 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6244 SdHoareTripleChecker+Valid, 6511 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:16,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6244 Valid, 6511 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:16,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:17,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5655933762649494) internal successors, (8509), 5436 states have internal predecessors, (8509), 0 states have call successors, (0), 0 states 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 01:13:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8509 transitions. [2022-01-11 01:13:17,206 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8509 transitions. Word has length 165 [2022-01-11 01:13:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:17,206 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8509 transitions. [2022-01-11 01:13:17,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8509 transitions. [2022-01-11 01:13:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:17,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:17,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:17,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:13:17,209 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:17,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1003239059, now seen corresponding path program 1 times [2022-01-11 01:13:17,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:17,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344161310] [2022-01-11 01:13:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:17,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:17,264 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 01:13:17,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:17,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344161310] [2022-01-11 01:13:17,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344161310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:17,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:17,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:17,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326822606] [2022-01-11 01:13:17,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:17,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:17,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:17,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:17,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:17,266 INFO L87 Difference]: Start difference. First operand 5437 states and 8509 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:17,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:17,482 INFO L93 Difference]: Finished difference Result 8713 states and 13004 transitions. [2022-01-11 01:13:17,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:17,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:17,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:17,495 INFO L225 Difference]: With dead ends: 8713 [2022-01-11 01:13:17,495 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:17,500 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 01:13:17,501 INFO L933 BasicCegarLoop]: 6369 mSDtfsCounter, 6224 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6224 SdHoareTripleChecker+Valid, 6490 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:17,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6224 Valid, 6490 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:17,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:17,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5589696412143514) internal successors, (8473), 5436 states have internal predecessors, (8473), 0 states have call successors, (0), 0 states 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 01:13:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8473 transitions. [2022-01-11 01:13:17,709 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8473 transitions. Word has length 165 [2022-01-11 01:13:17,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:17,709 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8473 transitions. [2022-01-11 01:13:17,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:17,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8473 transitions. [2022-01-11 01:13:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:17,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:17,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:17,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:13:17,712 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:17,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:17,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1806904524, now seen corresponding path program 1 times [2022-01-11 01:13:17,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:17,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364300441] [2022-01-11 01:13:17,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:17,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:17,759 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 01:13:17,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:17,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364300441] [2022-01-11 01:13:17,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364300441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:17,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:17,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:17,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610157088] [2022-01-11 01:13:17,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:17,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:17,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:17,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:17,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:17,762 INFO L87 Difference]: Start difference. First operand 5437 states and 8473 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:17,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:17,975 INFO L93 Difference]: Finished difference Result 8712 states and 12931 transitions. [2022-01-11 01:13:17,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:17,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:17,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:17,987 INFO L225 Difference]: With dead ends: 8712 [2022-01-11 01:13:17,987 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:17,992 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 01:13:17,992 INFO L933 BasicCegarLoop]: 6349 mSDtfsCounter, 6204 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6204 SdHoareTripleChecker+Valid, 6469 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:17,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6204 Valid, 6469 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5523459061637535) internal successors, (8437), 5436 states have internal predecessors, (8437), 0 states have call successors, (0), 0 states 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 01:13:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8437 transitions. [2022-01-11 01:13:18,201 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8437 transitions. Word has length 165 [2022-01-11 01:13:18,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:18,202 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8437 transitions. [2022-01-11 01:13:18,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:18,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8437 transitions. [2022-01-11 01:13:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:18,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:18,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:18,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:13:18,205 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:18,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1609014869, now seen corresponding path program 1 times [2022-01-11 01:13:18,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:18,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189303422] [2022-01-11 01:13:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:18,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:18,253 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 01:13:18,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:18,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189303422] [2022-01-11 01:13:18,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189303422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:18,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:18,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:18,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663147768] [2022-01-11 01:13:18,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:18,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:18,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:18,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:18,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:18,255 INFO L87 Difference]: Start difference. First operand 5437 states and 8437 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:18,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:18,484 INFO L93 Difference]: Finished difference Result 8711 states and 12858 transitions. [2022-01-11 01:13:18,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:18,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:18,497 INFO L225 Difference]: With dead ends: 8711 [2022-01-11 01:13:18,497 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:18,504 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 01:13:18,505 INFO L933 BasicCegarLoop]: 6329 mSDtfsCounter, 6184 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6184 SdHoareTripleChecker+Valid, 6448 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:18,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6184 Valid, 6448 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:18,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5457221711131555) internal successors, (8401), 5436 states have internal predecessors, (8401), 0 states have call successors, (0), 0 states 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 01:13:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8401 transitions. [2022-01-11 01:13:18,731 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8401 transitions. Word has length 165 [2022-01-11 01:13:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:18,732 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8401 transitions. [2022-01-11 01:13:18,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8401 transitions. [2022-01-11 01:13:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:18,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:18,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:18,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:13:18,734 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:18,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:18,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1461091446, now seen corresponding path program 1 times [2022-01-11 01:13:18,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:18,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018959190] [2022-01-11 01:13:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:18,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:18,779 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 01:13:18,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:18,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018959190] [2022-01-11 01:13:18,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018959190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:18,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:18,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:18,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617323720] [2022-01-11 01:13:18,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:18,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:18,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:18,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:18,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:18,812 INFO L87 Difference]: Start difference. First operand 5437 states and 8401 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:19,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:19,084 INFO L93 Difference]: Finished difference Result 8710 states and 12785 transitions. [2022-01-11 01:13:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:19,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:19,094 INFO L225 Difference]: With dead ends: 8710 [2022-01-11 01:13:19,094 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:19,099 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 01:13:19,099 INFO L933 BasicCegarLoop]: 6309 mSDtfsCounter, 6164 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6164 SdHoareTripleChecker+Valid, 6427 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:19,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6164 Valid, 6427 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:13:19,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:19,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5390984360625575) internal successors, (8365), 5436 states have internal predecessors, (8365), 0 states have call successors, (0), 0 states 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 01:13:19,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8365 transitions. [2022-01-11 01:13:19,320 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8365 transitions. Word has length 165 [2022-01-11 01:13:19,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:19,321 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8365 transitions. [2022-01-11 01:13:19,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8365 transitions. [2022-01-11 01:13:19,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:19,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:19,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:19,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:13:19,324 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:19,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:19,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1014497450, now seen corresponding path program 1 times [2022-01-11 01:13:19,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:19,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697920504] [2022-01-11 01:13:19,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:19,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:19,371 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 01:13:19,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:19,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697920504] [2022-01-11 01:13:19,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697920504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:19,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:19,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:19,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658361532] [2022-01-11 01:13:19,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:19,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:19,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:19,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:19,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:19,375 INFO L87 Difference]: Start difference. First operand 5437 states and 8365 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:19,584 INFO L93 Difference]: Finished difference Result 8709 states and 12712 transitions. [2022-01-11 01:13:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:19,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:19,592 INFO L225 Difference]: With dead ends: 8709 [2022-01-11 01:13:19,593 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:13:19,598 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 01:13:19,598 INFO L933 BasicCegarLoop]: 6289 mSDtfsCounter, 6144 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6144 SdHoareTripleChecker+Valid, 6406 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:19,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6144 Valid, 6406 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:19,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:13:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:13:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5324747010119595) internal successors, (8329), 5436 states have internal predecessors, (8329), 0 states have call successors, (0), 0 states 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 01:13:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8329 transitions. [2022-01-11 01:13:19,839 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8329 transitions. Word has length 165 [2022-01-11 01:13:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:19,840 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8329 transitions. [2022-01-11 01:13:19,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8329 transitions. [2022-01-11 01:13:19,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:19,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:19,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:19,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:13:19,842 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:19,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:19,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1795251959, now seen corresponding path program 1 times [2022-01-11 01:13:19,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:19,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924752075] [2022-01-11 01:13:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:19,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:19,929 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 01:13:19,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:19,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924752075] [2022-01-11 01:13:19,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924752075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:19,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:19,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:13:19,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174109940] [2022-01-11 01:13:19,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:19,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:13:19,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:19,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:13:19,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:13:19,931 INFO L87 Difference]: Start difference. First operand 5437 states and 8329 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:20,484 INFO L93 Difference]: Finished difference Result 9821 states and 14177 transitions. [2022-01-11 01:13:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:13:20,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:20,496 INFO L225 Difference]: With dead ends: 9821 [2022-01-11 01:13:20,497 INFO L226 Difference]: Without dead ends: 6563 [2022-01-11 01:13:20,505 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 01:13:20,506 INFO L933 BasicCegarLoop]: 6455 mSDtfsCounter, 6580 mSDsluCounter, 14230 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6580 SdHoareTripleChecker+Valid, 20685 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:20,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6580 Valid, 20685 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:13:20,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2022-01-11 01:13:20,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 5443. [2022-01-11 01:13:20,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5443 states, 5441 states have (on average 1.526741407829443) internal successors, (8307), 5442 states have internal predecessors, (8307), 0 states have call successors, (0), 0 states 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 01:13:20,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5443 states to 5443 states and 8307 transitions. [2022-01-11 01:13:20,879 INFO L78 Accepts]: Start accepts. Automaton has 5443 states and 8307 transitions. Word has length 165 [2022-01-11 01:13:20,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:20,880 INFO L470 AbstractCegarLoop]: Abstraction has 5443 states and 8307 transitions. [2022-01-11 01:13:20,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:20,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5443 states and 8307 transitions. [2022-01-11 01:13:20,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:20,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:20,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:20,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:13:20,881 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:20,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:20,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1980423050, now seen corresponding path program 1 times [2022-01-11 01:13:20,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:20,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412875967] [2022-01-11 01:13:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:20,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:20,940 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 01:13:20,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:20,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412875967] [2022-01-11 01:13:20,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412875967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:20,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:20,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:20,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603925877] [2022-01-11 01:13:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:20,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:20,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:20,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:20,942 INFO L87 Difference]: Start difference. First operand 5443 states and 8307 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:21,497 INFO L93 Difference]: Finished difference Result 11646 states and 16418 transitions. [2022-01-11 01:13:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:21,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:21,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:21,510 INFO L225 Difference]: With dead ends: 11646 [2022-01-11 01:13:21,510 INFO L226 Difference]: Without dead ends: 8384 [2022-01-11 01:13:21,517 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 01:13:21,517 INFO L933 BasicCegarLoop]: 6275 mSDtfsCounter, 6066 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6066 SdHoareTripleChecker+Valid, 8370 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:21,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6066 Valid, 8370 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:21,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8384 states. [2022-01-11 01:13:21,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8384 to 8378. [2022-01-11 01:13:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8378 states, 8376 states have (on average 1.4461556829035338) internal successors, (12113), 8377 states have internal predecessors, (12113), 0 states have call successors, (0), 0 states 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 01:13:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8378 states to 8378 states and 12113 transitions. [2022-01-11 01:13:21,997 INFO L78 Accepts]: Start accepts. Automaton has 8378 states and 12113 transitions. Word has length 165 [2022-01-11 01:13:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:21,998 INFO L470 AbstractCegarLoop]: Abstraction has 8378 states and 12113 transitions. [2022-01-11 01:13:21,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 8378 states and 12113 transitions. [2022-01-11 01:13:21,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:21,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:21,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:21,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 01:13:22,000 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1861272439, now seen corresponding path program 1 times [2022-01-11 01:13:22,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:22,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388395786] [2022-01-11 01:13:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:22,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:22,060 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 01:13:22,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:22,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388395786] [2022-01-11 01:13:22,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388395786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:22,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:22,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:13:22,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923605135] [2022-01-11 01:13:22,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:22,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:13:22,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:13:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:13:22,062 INFO L87 Difference]: Start difference. First operand 8378 states and 12113 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:22,851 INFO L93 Difference]: Finished difference Result 18345 states and 25215 transitions. [2022-01-11 01:13:22,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:13:22,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:22,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:22,866 INFO L225 Difference]: With dead ends: 18345 [2022-01-11 01:13:22,867 INFO L226 Difference]: Without dead ends: 12180 [2022-01-11 01:13:22,875 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 01:13:22,876 INFO L933 BasicCegarLoop]: 6343 mSDtfsCounter, 5720 mSDsluCounter, 16071 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5720 SdHoareTripleChecker+Valid, 22414 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:22,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5720 Valid, 22414 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:13:22,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12180 states. [2022-01-11 01:13:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12180 to 8390. [2022-01-11 01:13:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8390 states, 8388 states have (on average 1.4391988555078683) internal successors, (12072), 8389 states have internal predecessors, (12072), 0 states have call successors, (0), 0 states 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 01:13:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 12072 transitions. [2022-01-11 01:13:23,334 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 12072 transitions. Word has length 165 [2022-01-11 01:13:23,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:23,334 INFO L470 AbstractCegarLoop]: Abstraction has 8390 states and 12072 transitions. [2022-01-11 01:13:23,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 12072 transitions. [2022-01-11 01:13:23,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:23,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:23,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:23,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 01:13:23,336 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:23,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:23,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1741152566, now seen corresponding path program 1 times [2022-01-11 01:13:23,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:23,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404915259] [2022-01-11 01:13:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:23,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:23,404 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 01:13:23,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:23,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404915259] [2022-01-11 01:13:23,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404915259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:23,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:23,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:13:23,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773227534] [2022-01-11 01:13:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:23,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:13:23,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:13:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:13:23,407 INFO L87 Difference]: Start difference. First operand 8390 states and 12072 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:24,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:24,364 INFO L93 Difference]: Finished difference Result 18696 states and 25505 transitions. [2022-01-11 01:13:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:13:24,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:24,380 INFO L225 Difference]: With dead ends: 18696 [2022-01-11 01:13:24,380 INFO L226 Difference]: Without dead ends: 12526 [2022-01-11 01:13:24,387 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 01:13:24,387 INFO L933 BasicCegarLoop]: 6310 mSDtfsCounter, 5529 mSDsluCounter, 16400 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5529 SdHoareTripleChecker+Valid, 22710 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:24,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5529 Valid, 22710 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:13:24,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12526 states. [2022-01-11 01:13:24,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12526 to 8402. [2022-01-11 01:13:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8402 states, 8400 states have (on average 1.4322619047619047) internal successors, (12031), 8401 states have internal predecessors, (12031), 0 states have call successors, (0), 0 states 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 01:13:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8402 states to 8402 states and 12031 transitions. [2022-01-11 01:13:24,807 INFO L78 Accepts]: Start accepts. Automaton has 8402 states and 12031 transitions. Word has length 165 [2022-01-11 01:13:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:24,807 INFO L470 AbstractCegarLoop]: Abstraction has 8402 states and 12031 transitions. [2022-01-11 01:13:24,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 8402 states and 12031 transitions. [2022-01-11 01:13:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:24,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:24,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:24,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 01:13:24,809 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:24,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:24,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1598293451, now seen corresponding path program 1 times [2022-01-11 01:13:24,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:24,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784251046] [2022-01-11 01:13:24,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:24,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:24,867 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 01:13:24,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:24,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784251046] [2022-01-11 01:13:24,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784251046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:24,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:24,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:24,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49446236] [2022-01-11 01:13:24,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:24,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:24,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:24,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:24,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:24,869 INFO L87 Difference]: Start difference. First operand 8402 states and 12031 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:25,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:25,425 INFO L93 Difference]: Finished difference Result 14663 states and 20070 transitions. [2022-01-11 01:13:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:25,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:25,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:25,435 INFO L225 Difference]: With dead ends: 14663 [2022-01-11 01:13:25,435 INFO L226 Difference]: Without dead ends: 8402 [2022-01-11 01:13:25,441 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 01:13:25,442 INFO L933 BasicCegarLoop]: 6251 mSDtfsCounter, 6131 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6131 SdHoareTripleChecker+Valid, 6251 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 01:13:25,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6131 Valid, 6251 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8402 states. [2022-01-11 01:13:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8402 to 8402. [2022-01-11 01:13:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8402 states, 8400 states have (on average 1.430595238095238) internal successors, (12017), 8401 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states 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 01:13:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8402 states to 8402 states and 12017 transitions. [2022-01-11 01:13:25,864 INFO L78 Accepts]: Start accepts. Automaton has 8402 states and 12017 transitions. Word has length 165 [2022-01-11 01:13:25,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:25,864 INFO L470 AbstractCegarLoop]: Abstraction has 8402 states and 12017 transitions. [2022-01-11 01:13:25,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:25,864 INFO L276 IsEmpty]: Start isEmpty. Operand 8402 states and 12017 transitions. [2022-01-11 01:13:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:25,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:25,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:25,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 01:13:25,868 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:25,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:25,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1235093846, now seen corresponding path program 1 times [2022-01-11 01:13:25,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:25,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003145921] [2022-01-11 01:13:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:25,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:25,937 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 01:13:25,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:25,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003145921] [2022-01-11 01:13:25,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003145921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:25,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:25,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:25,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919029888] [2022-01-11 01:13:25,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:25,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:25,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:25,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:25,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:25,939 INFO L87 Difference]: Start difference. First operand 8402 states and 12017 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:26,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:26,506 INFO L93 Difference]: Finished difference Result 14649 states and 20028 transitions. [2022-01-11 01:13:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:26,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:26,516 INFO L225 Difference]: With dead ends: 14649 [2022-01-11 01:13:26,516 INFO L226 Difference]: Without dead ends: 8402 [2022-01-11 01:13:26,520 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 01:13:26,520 INFO L933 BasicCegarLoop]: 6218 mSDtfsCounter, 5981 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5981 SdHoareTripleChecker+Valid, 6331 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:26,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5981 Valid, 6331 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8402 states. [2022-01-11 01:13:26,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8402 to 8402. [2022-01-11 01:13:26,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8402 states, 8400 states have (on average 1.4257142857142857) internal successors, (11976), 8401 states have internal predecessors, (11976), 0 states have call successors, (0), 0 states 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 01:13:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8402 states to 8402 states and 11976 transitions. [2022-01-11 01:13:26,938 INFO L78 Accepts]: Start accepts. Automaton has 8402 states and 11976 transitions. Word has length 165 [2022-01-11 01:13:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:26,939 INFO L470 AbstractCegarLoop]: Abstraction has 8402 states and 11976 transitions. [2022-01-11 01:13:26,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:26,939 INFO L276 IsEmpty]: Start isEmpty. Operand 8402 states and 11976 transitions. [2022-01-11 01:13:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:13:26,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:26,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:26,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 01:13:26,941 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:26,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:26,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1204074039, now seen corresponding path program 1 times [2022-01-11 01:13:26,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:26,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983022075] [2022-01-11 01:13:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:26,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:27,002 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 01:13:27,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:27,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983022075] [2022-01-11 01:13:27,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983022075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:27,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:27,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:27,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278946620] [2022-01-11 01:13:27,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:27,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:27,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:27,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:27,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:27,004 INFO L87 Difference]: Start difference. First operand 8402 states and 11976 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:27,895 INFO L93 Difference]: Finished difference Result 20685 states and 27673 transitions. [2022-01-11 01:13:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:27,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:13:27,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:27,919 INFO L225 Difference]: With dead ends: 20685 [2022-01-11 01:13:27,919 INFO L226 Difference]: Without dead ends: 14450 [2022-01-11 01:13:27,928 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 01:13:27,928 INFO L933 BasicCegarLoop]: 6218 mSDtfsCounter, 6035 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6035 SdHoareTripleChecker+Valid, 8265 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:27,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6035 Valid, 8265 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14450 states. [2022-01-11 01:13:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14450 to 14080. [2022-01-11 01:13:28,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14080 states, 14078 states have (on average 1.3631197613297343) internal successors, (19190), 14079 states have internal predecessors, (19190), 0 states have call successors, (0), 0 states 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 01:13:28,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14080 states to 14080 states and 19190 transitions. [2022-01-11 01:13:28,806 INFO L78 Accepts]: Start accepts. Automaton has 14080 states and 19190 transitions. Word has length 165 [2022-01-11 01:13:28,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:28,806 INFO L470 AbstractCegarLoop]: Abstraction has 14080 states and 19190 transitions. [2022-01-11 01:13:28,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:13:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 14080 states and 19190 transitions. [2022-01-11 01:13:28,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-11 01:13:28,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:28,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:28,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 01:13:28,816 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:28,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:28,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1028298530, now seen corresponding path program 1 times [2022-01-11 01:13:28,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:28,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068025362] [2022-01-11 01:13:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:28,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:28,897 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 01:13:28,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:28,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068025362] [2022-01-11 01:13:28,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068025362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:28,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:28,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:13:28,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23402832] [2022-01-11 01:13:28,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:28,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:28,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:28,900 INFO L87 Difference]: Start difference. First operand 14080 states and 19190 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 01:13:30,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:30,542 INFO L93 Difference]: Finished difference Result 37588 states and 49167 transitions. [2022-01-11 01:13:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:30,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2022-01-11 01:13:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:30,578 INFO L225 Difference]: With dead ends: 37588 [2022-01-11 01:13:30,578 INFO L226 Difference]: Without dead ends: 25681 [2022-01-11 01:13:30,592 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 01:13:30,593 INFO L933 BasicCegarLoop]: 6215 mSDtfsCounter, 6068 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6068 SdHoareTripleChecker+Valid, 8262 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:30,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6068 Valid, 8262 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:13:30,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25681 states. [2022-01-11 01:13:32,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25681 to 25003. [2022-01-11 01:13:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25003 states, 25001 states have (on average 1.3221871125154994) internal successors, (33056), 25002 states have internal predecessors, (33056), 0 states have call successors, (0), 0 states 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 01:13:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25003 states to 25003 states and 33056 transitions. [2022-01-11 01:13:32,336 INFO L78 Accepts]: Start accepts. Automaton has 25003 states and 33056 transitions. Word has length 268 [2022-01-11 01:13:32,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:32,337 INFO L470 AbstractCegarLoop]: Abstraction has 25003 states and 33056 transitions. [2022-01-11 01:13:32,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 01:13:32,337 INFO L276 IsEmpty]: Start isEmpty. Operand 25003 states and 33056 transitions. [2022-01-11 01:13:32,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-11 01:13:32,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:32,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:32,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 01:13:32,350 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:32,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:32,350 INFO L85 PathProgramCache]: Analyzing trace with hash 866680546, now seen corresponding path program 1 times [2022-01-11 01:13:32,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:32,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235848148] [2022-01-11 01:13:32,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:32,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:32,437 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 01:13:32,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:32,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235848148] [2022-01-11 01:13:32,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235848148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:32,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:32,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:13:32,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109185073] [2022-01-11 01:13:32,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:32,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:13:32,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:32,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:13:32,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:13:32,439 INFO L87 Difference]: Start difference. First operand 25003 states and 33056 transitions. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 01:13:35,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:35,757 INFO L93 Difference]: Finished difference Result 66783 states and 86497 transitions. [2022-01-11 01:13:35,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:13:35,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2022-01-11 01:13:35,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:35,821 INFO L225 Difference]: With dead ends: 66783 [2022-01-11 01:13:35,821 INFO L226 Difference]: Without dead ends: 44019 [2022-01-11 01:13:35,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 01:13:35,848 INFO L933 BasicCegarLoop]: 6193 mSDtfsCounter, 4958 mSDsluCounter, 16927 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 23120 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:35,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4958 Valid, 23120 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:13:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44019 states. [2022-01-11 01:13:37,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44019 to 25051. [2022-01-11 01:13:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25051 states, 25049 states have (on average 1.3138648249431115) internal successors, (32911), 25050 states have internal predecessors, (32911), 0 states have call successors, (0), 0 states 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 01:13:37,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25051 states to 25051 states and 32911 transitions. [2022-01-11 01:13:37,880 INFO L78 Accepts]: Start accepts. Automaton has 25051 states and 32911 transitions. Word has length 268 [2022-01-11 01:13:37,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:37,880 INFO L470 AbstractCegarLoop]: Abstraction has 25051 states and 32911 transitions. [2022-01-11 01:13:37,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 01:13:37,880 INFO L276 IsEmpty]: Start isEmpty. Operand 25051 states and 32911 transitions. [2022-01-11 01:13:37,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-11 01:13:37,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:37,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:37,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 01:13:37,893 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash -916837536, now seen corresponding path program 1 times [2022-01-11 01:13:37,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:37,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269218329] [2022-01-11 01:13:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:37,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:37,981 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 01:13:37,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:37,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269218329] [2022-01-11 01:13:37,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269218329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:37,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:37,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:13:37,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624994388] [2022-01-11 01:13:37,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:37,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:37,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:37,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:37,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:37,983 INFO L87 Difference]: Start difference. First operand 25051 states and 32911 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 01:13:41,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:41,835 INFO L93 Difference]: Finished difference Result 69409 states and 88541 transitions. [2022-01-11 01:13:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:41,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2022-01-11 01:13:41,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:41,896 INFO L225 Difference]: With dead ends: 69409 [2022-01-11 01:13:41,896 INFO L226 Difference]: Without dead ends: 46639 [2022-01-11 01:13:41,925 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 01:13:41,926 INFO L933 BasicCegarLoop]: 7640 mSDtfsCounter, 5783 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5783 SdHoareTripleChecker+Valid, 9880 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 01:13:41,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5783 Valid, 9880 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:41,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46639 states.