/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:51:39,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:51:39,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:51:39,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:51:39,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:51:39,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:51:39,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:51:39,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:51:39,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:51:39,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:51:39,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:51:39,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:51:39,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:51:39,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:51:39,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:51:39,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:51:39,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:51:39,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:51:39,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:51:39,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:51:39,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:51:39,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:51:39,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:51:39,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:51:39,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 17:51:39,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:51:39,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:51:39,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:51:39,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:51:39,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:51:39,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:51:39,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:51:39,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:51:39,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:51:39,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:51:39,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:51:39,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:51:39,855 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:51:39,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:51:39,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:51:39,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:51:39,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:51:39,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:51:39,857 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:51:39,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:51:39,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:51:39,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:51:39,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:51:39,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:51:39,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:51:39,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:51:39,858 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:51:39,858 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:51:39,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:51:39,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:51:39,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:51:39,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:51:39,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:51:39,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:51:39,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:51:39,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:51:39,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:51:39,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:51:39,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:51:39,863 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:51:39,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:51:39,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:51:39,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:51:39,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:51:39,864 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:51:39,864 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:51:40,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:51:40,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:51:40,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:51:40,054 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:51:40,058 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:51:40,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i [2022-01-10 17:51:40,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f4edf51/c45f8a9c98ed41c3bac88d8717a53bd6/FLAG140d3dec3 [2022-01-10 17:51:40,498 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:51:40,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i [2022-01-10 17:51:40,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f4edf51/c45f8a9c98ed41c3bac88d8717a53bd6/FLAG140d3dec3 [2022-01-10 17:51:40,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f4edf51/c45f8a9c98ed41c3bac88d8717a53bd6 [2022-01-10 17:51:40,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:51:40,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:51:40,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:51:40,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:51:40,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:51:40,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:51:40" (1/1) ... [2022-01-10 17:51:40,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30bf39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:40, skipping insertion in model container [2022-01-10 17:51:40,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:51:40" (1/1) ... [2022-01-10 17:51:40,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:51:40,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:51:41,164 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i[24132,24145] [2022-01-10 17:51:41,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:51:41,172 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:51:41,198 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i[24132,24145] [2022-01-10 17:51:41,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:51:41,216 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:51:41,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:41 WrapperNode [2022-01-10 17:51:41,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:51:41,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:51:41,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:51:41,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:51:41,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:41" (1/1) ... [2022-01-10 17:51:41,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:41" (1/1) ... [2022-01-10 17:51:41,269 INFO L137 Inliner]: procedures = 125, calls = 23, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 94 [2022-01-10 17:51:41,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:51:41,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:51:41,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:51:41,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:51:41,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:41" (1/1) ... [2022-01-10 17:51:41,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:41" (1/1) ... [2022-01-10 17:51:41,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:41" (1/1) ... [2022-01-10 17:51:41,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:41" (1/1) ... [2022-01-10 17:51:41,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:41" (1/1) ... [2022-01-10 17:51:41,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:41" (1/1) ... [2022-01-10 17:51:41,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:41" (1/1) ... [2022-01-10 17:51:41,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:51:41,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:51:41,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:51:41,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:51:41,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:41" (1/1) ... [2022-01-10 17:51:41,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:51:41,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:51:41,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 17:51:41,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 17:51:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 17:51:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 17:51:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:51:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 17:51:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 17:51:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 17:51:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 17:51:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:51:41,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:51:41,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:51:41,440 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:51:41,441 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:51:41,695 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:51:41,699 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:51:41,700 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 17:51:41,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:51:41 BoogieIcfgContainer [2022-01-10 17:51:41,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:51:41,701 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:51:41,701 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:51:41,705 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:51:41,708 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:51:41" (1/1) ... [2022-01-10 17:51:41,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:51:41 BasicIcfg [2022-01-10 17:51:41,789 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:51:41,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:51:41,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:51:41,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:51:41,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:51:40" (1/4) ... [2022-01-10 17:51:41,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdd138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:51:41, skipping insertion in model container [2022-01-10 17:51:41,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:41" (2/4) ... [2022-01-10 17:51:41,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdd138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:51:41, skipping insertion in model container [2022-01-10 17:51:41,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:51:41" (3/4) ... [2022-01-10 17:51:41,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdd138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:51:41, skipping insertion in model container [2022-01-10 17:51:41,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:51:41" (4/4) ... [2022-01-10 17:51:41,794 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.iTransformedIcfg [2022-01-10 17:51:41,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:51:41,799 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 17:51:41,831 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:51:41,838 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 17:51:41,838 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 17:51:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:41,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 17:51:41,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:41,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:41,852 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:41,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1116639955, now seen corresponding path program 1 times [2022-01-10 17:51:41,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:41,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713096120] [2022-01-10 17:51:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:41,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:42,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:42,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713096120] [2022-01-10 17:51:42,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713096120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:51:42,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:51:42,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:51:42,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48623752] [2022-01-10 17:51:42,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:51:42,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 17:51:42,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 17:51:42,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 17:51:42,093 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:42,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:42,108 INFO L93 Difference]: Finished difference Result 43 states and 59 transitions. [2022-01-10 17:51:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 17:51:42,109 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-01-10 17:51:42,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:42,114 INFO L225 Difference]: With dead ends: 43 [2022-01-10 17:51:42,115 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 17:51:42,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 17:51:42,124 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:42,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:51:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 17:51:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-10 17:51:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-01-10 17:51:42,148 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 10 [2022-01-10 17:51:42,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:42,148 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-01-10 17:51:42,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-01-10 17:51:42,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 17:51:42,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:42,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:42,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:51:42,151 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:42,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:42,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1088010804, now seen corresponding path program 1 times [2022-01-10 17:51:42,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:42,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428926484] [2022-01-10 17:51:42,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:42,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:42,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:42,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428926484] [2022-01-10 17:51:42,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428926484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:51:42,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:51:42,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:51:42,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152193535] [2022-01-10 17:51:42,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:51:42,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:51:42,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:42,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:51:42,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:51:42,322 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:42,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:42,339 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2022-01-10 17:51:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:51:42,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-01-10 17:51:42,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:42,341 INFO L225 Difference]: With dead ends: 36 [2022-01-10 17:51:42,341 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 17:51:42,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:51:42,346 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:42,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:51:42,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 17:51:42,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-01-10 17:51:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-01-10 17:51:42,353 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 10 [2022-01-10 17:51:42,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:42,355 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-01-10 17:51:42,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-01-10 17:51:42,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 17:51:42,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:42,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:42,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:51:42,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:42,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:42,361 INFO L85 PathProgramCache]: Analyzing trace with hash 109968870, now seen corresponding path program 1 times [2022-01-10 17:51:42,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:42,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9673462] [2022-01-10 17:51:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:42,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:42,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:42,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9673462] [2022-01-10 17:51:42,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9673462] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:51:42,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625653477] [2022-01-10 17:51:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:42,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:42,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:51:42,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:51:42,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 17:51:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:42,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-10 17:51:42,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:51:42,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 17:51:42,890 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 17:51:42,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-01-10 17:51:42,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 17:51:42,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-10 17:51:43,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 17:51:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:43,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:51:43,155 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_100 (Array Int Int))) (= (select (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~last~0#1.baseInt| v_ArrVal_100) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.offsetInt| 8) 18446744073709551616)) |c_ULTIMATE.start_ULTIMATE.start_main_~data_init~0#1Int|)) is different from false [2022-01-10 17:51:43,186 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:43,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-01-10 17:51:43,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2022-01-10 17:51:43,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-10 17:51:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-10 17:51:43,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625653477] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:51:43,338 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:51:43,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 16 [2022-01-10 17:51:43,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649595181] [2022-01-10 17:51:43,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:51:43,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 17:51:43,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:43,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 17:51:43,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=178, Unknown=1, NotChecked=26, Total=240 [2022-01-10 17:51:43,343 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:43,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:43,606 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2022-01-10 17:51:43,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:51:43,606 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 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 13 [2022-01-10 17:51:43,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:43,607 INFO L225 Difference]: With dead ends: 39 [2022-01-10 17:51:43,607 INFO L226 Difference]: Without dead ends: 26 [2022-01-10 17:51:43,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=287, Unknown=1, NotChecked=34, Total=380 [2022-01-10 17:51:43,608 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:43,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 144 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-01-10 17:51:43,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-10 17:51:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-01-10 17:51:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-01-10 17:51:43,611 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 13 [2022-01-10 17:51:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:43,611 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-01-10 17:51:43,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:43,611 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-01-10 17:51:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 17:51:43,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:43,612 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:43,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 17:51:43,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:43,820 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:43,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2055792756, now seen corresponding path program 2 times [2022-01-10 17:51:43,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:43,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245016531] [2022-01-10 17:51:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:43,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:43,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:43,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245016531] [2022-01-10 17:51:43,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245016531] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:51:43,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756972822] [2022-01-10 17:51:43,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 17:51:43,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:43,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:51:43,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:51:43,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 17:51:44,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 17:51:44,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 17:51:44,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-10 17:51:44,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:51:44,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 17:51:44,240 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-10 17:51:44,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2022-01-10 17:51:44,266 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 17:51:44,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-01-10 17:51:44,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 17:51:44,318 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-10 17:51:44,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-10 17:51:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 17:51:44,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:51:44,423 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_189 (Array Int Int))) (= (select (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~last~0#1.baseInt| v_ArrVal_189) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.offsetInt| 8) 18446744073709551616)) |c_ULTIMATE.start_ULTIMATE.start_main_~data_init~0#1Int|)) is different from false [2022-01-10 17:51:44,435 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:44,435 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-01-10 17:51:44,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2022-01-10 17:51:44,446 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-10 17:51:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-01-10 17:51:44,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756972822] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:51:44,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:51:44,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 17 [2022-01-10 17:51:44,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728501304] [2022-01-10 17:51:44,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:51:44,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 17:51:44,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 17:51:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=206, Unknown=1, NotChecked=28, Total=272 [2022-01-10 17:51:44,686 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:44,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:45,000 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2022-01-10 17:51:45,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 17:51:45,001 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 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 16 [2022-01-10 17:51:45,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:45,001 INFO L225 Difference]: With dead ends: 42 [2022-01-10 17:51:45,001 INFO L226 Difference]: Without dead ends: 29 [2022-01-10 17:51:45,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=490, Unknown=1, NotChecked=46, Total=650 [2022-01-10 17:51:45,002 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:45,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 146 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-01-10 17:51:45,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-10 17:51:45,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-10 17:51:45,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:45,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-01-10 17:51:45,006 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 16 [2022-01-10 17:51:45,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:45,006 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-01-10 17:51:45,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:45,007 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-01-10 17:51:45,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 17:51:45,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:45,007 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:45,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 17:51:45,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 17:51:45,208 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:45,208 INFO L85 PathProgramCache]: Analyzing trace with hash 858452641, now seen corresponding path program 1 times [2022-01-10 17:51:45,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:45,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859461419] [2022-01-10 17:51:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:45,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 17:51:45,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:45,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859461419] [2022-01-10 17:51:45,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859461419] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:51:45,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555134046] [2022-01-10 17:51:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:45,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:45,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:51:45,356 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:51:45,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 17:51:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:46,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 73 conjunts are in the unsatisfiable core [2022-01-10 17:51:46,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:51:46,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 17:51:46,058 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-10 17:51:46,059 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2022-01-10 17:51:46,124 INFO L353 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-01-10 17:51:46,125 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 36 [2022-01-10 17:51:46,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 17:51:46,244 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-10 17:51:46,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2022-01-10 17:51:46,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:46,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-01-10 17:51:46,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:46,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-01-10 17:51:46,310 INFO L353 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-01-10 17:51:46,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-01-10 17:51:46,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-01-10 17:51:46,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-01-10 17:51:46,398 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-10 17:51:46,403 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-01-10 17:51:46,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-01-10 17:51:46,511 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-01-10 17:51:46,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 30 [2022-01-10 17:51:46,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:46,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-01-10 17:51:46,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2022-01-10 17:51:46,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:46,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 17:51:46,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 17:51:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:46,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:51:46,855 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_326 (Array Int Int)) (v_ArrVal_325 (Array Int Int)) (v_ArrVal_330 Int) (v_ArrVal_329 Int) (v_ArrVal_324 (Array Int Int)) (v_ArrVal_323 (Array Int Int))) (let ((.cse2 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.offsetInt| 8) 18446744073709551616))) (let ((.cse1 (select (store (select (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~last~0#1.baseInt| v_ArrVal_325) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.baseInt|) .cse2 v_ArrVal_329) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.offsetInt|)) (.cse0 (select (store (select (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~last~0#1.baseInt| v_ArrVal_324) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.baseInt|) .cse2 v_ArrVal_330) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.offsetInt|))) (or (and (= |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.offsetInt| .cse0) (= .cse1 |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.baseInt|)) (= (select (select (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~last~0#1.baseInt| v_ArrVal_323) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.baseInt| v_ArrVal_326) .cse1) (mod (+ .cse0 8) 18446744073709551616)) |c_ULTIMATE.start_ULTIMATE.start_main_~data_init~0#1Int|))))) is different from false [2022-01-10 17:51:46,934 INFO L353 Elim1Store]: treesize reduction 25, result has 45.7 percent of original size [2022-01-10 17:51:46,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 134 [2022-01-10 17:51:46,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 199 [2022-01-10 17:51:46,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:51:46,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 117 [2022-01-10 17:51:46,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:51:46,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 103 [2022-01-10 17:51:46,971 INFO L353 Elim1Store]: treesize reduction 25, result has 45.7 percent of original size [2022-01-10 17:51:46,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 132 [2022-01-10 17:51:46,976 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 203 [2022-01-10 17:51:46,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:51:46,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 170 [2022-01-10 17:51:46,986 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 244 [2022-01-10 17:51:48,775 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_326 (Array Int Int)) (v_ArrVal_319 (Array Int Int)) (v_arrayElimCell_36 Int) (v_arrayElimCell_38 Int) (v_ArrVal_323 (Array Int Int))) (let ((.cse2 (= |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~last~0#1.baseInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~new_head~0#1.baseInt|))) (let ((.cse0 (store (store (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~new_head~0#1.baseInt| v_ArrVal_319) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~last~0#1.baseInt| v_ArrVal_323) |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~new_head~0#1.baseInt| v_ArrVal_326)) (.cse1 (not .cse2))) (or (and (= |c_ULTIMATE.start_ULTIMATE.start_main_~data_init~0#1Int| (select (select .cse0 |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.offsetInt| 8) 18446744073709551616))) .cse1) (and .cse2 (= (select (select .cse0 v_arrayElimCell_36) (mod (+ 8 v_arrayElimCell_38) 18446744073709551616)) |c_ULTIMATE.start_ULTIMATE.start_main_~data_init~0#1Int|)) (and (or (and .cse1 (= |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~new_head~0#1.offsetInt|)) (and (= |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~new_head~0#1.offsetInt| v_arrayElimCell_38) .cse2)) (or (and .cse1 (= |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~new_head~0#1.baseInt| |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~head~0#1.baseInt|)) (and .cse2 (= |c_ULTIMATE.start_ULTIMATE.start_sll_circular_create_~new_head~0#1.baseInt| v_arrayElimCell_36)))))))) is different from false [2022-01-10 17:51:50,429 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:50,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 62 [2022-01-10 17:51:50,444 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:50,445 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 310 treesize of output 305 [2022-01-10 17:51:50,461 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:50,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 282 treesize of output 274 [2022-01-10 17:51:50,474 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:50,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 258 treesize of output 226 [2022-01-10 17:51:50,488 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:50,489 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 210 treesize of output 214 [2022-01-10 17:51:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-01-10 17:51:54,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555134046] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:51:54,838 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:51:54,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 13] total 28 [2022-01-10 17:51:54,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166872856] [2022-01-10 17:51:54,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:51:54,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-10 17:51:54,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:54,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-10 17:51:54,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=579, Unknown=2, NotChecked=98, Total=756 [2022-01-10 17:51:54,840 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:55,623 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2022-01-10 17:51:55,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 17:51:55,624 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-10 17:51:55,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:55,625 INFO L225 Difference]: With dead ends: 65 [2022-01-10 17:51:55,625 INFO L226 Difference]: Without dead ends: 50 [2022-01-10 17:51:55,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=185, Invalid=1225, Unknown=4, NotChecked=146, Total=1560 [2022-01-10 17:51:55,626 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:55,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 103 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 134 Unchecked, 0.1s Time] [2022-01-10 17:51:55,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-10 17:51:55,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2022-01-10 17:51:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-01-10 17:51:55,632 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 22 [2022-01-10 17:51:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:55,632 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-01-10 17:51:55,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:55,632 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-01-10 17:51:55,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 17:51:55,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:55,633 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:55,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 17:51:55,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:55,848 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:55,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1013909205, now seen corresponding path program 1 times [2022-01-10 17:51:55,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:55,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411894309] [2022-01-10 17:51:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:55,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat