/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:13:53,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:13:53,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:13:53,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:13:53,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:13:53,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:13:53,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:13:53,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:13:53,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:13:53,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:13:53,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:13:53,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:13:53,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:13:53,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:13:53,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:13:53,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:13:53,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:13:53,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:13:53,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:13:53,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:13:53,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:13:53,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:13:53,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:13:53,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:13:53,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:13:53,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:13:53,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:13:53,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:13:53,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:13:53,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:13:53,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:13:53,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:13:53,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:13:53,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:13:53,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:13:53,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:13:53,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:13:53,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:13:53,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:13:53,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:13:53,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:13:53,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:13:53,592 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:13:53,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:13:53,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:13:53,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:13:53,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:13:53,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:13:53,594 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:13:53,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:13:53,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:13:53,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:13:53,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:13:53,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:13:53,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:13:53,595 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:13:53,595 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:13:53,595 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:13:53,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:13:53,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:13:53,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:13:53,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:13:53,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:13:53,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:13:53,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:13:53,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:13:53,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:13:53,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:13:53,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:13:53,597 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:13:53,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:13:53,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:13:53,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:13:53,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:13:53,598 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:13:53,598 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:13:53,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:13:53,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:13:53,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:13:53,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:13:53,836 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:13:53,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2022-01-11 06:13:53,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a2b0e02d/57c2f8fa64534b7aa4105312c68081a7/FLAG35d9f8a72 [2022-01-11 06:13:54,341 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:13:54,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2022-01-11 06:13:54,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a2b0e02d/57c2f8fa64534b7aa4105312c68081a7/FLAG35d9f8a72 [2022-01-11 06:13:54,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a2b0e02d/57c2f8fa64534b7aa4105312c68081a7 [2022-01-11 06:13:54,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:13:54,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:13:54,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:13:54,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:13:54,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:13:54,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:13:54" (1/1) ... [2022-01-11 06:13:54,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ca3419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:54, skipping insertion in model container [2022-01-11 06:13:54,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:13:54" (1/1) ... [2022-01-11 06:13:54,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:13:54,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:13:54,979 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c[5947,5960] [2022-01-11 06:13:54,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:13:54,990 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:13:55,018 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c[5947,5960] [2022-01-11 06:13:55,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:13:55,030 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:13:55,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:55 WrapperNode [2022-01-11 06:13:55,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:13:55,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:13:55,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:13:55,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:13:55,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:55" (1/1) ... [2022-01-11 06:13:55,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:55" (1/1) ... [2022-01-11 06:13:55,084 INFO L137 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 207 [2022-01-11 06:13:55,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:13:55,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:13:55,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:13:55,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:13:55,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:55" (1/1) ... [2022-01-11 06:13:55,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:55" (1/1) ... [2022-01-11 06:13:55,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:55" (1/1) ... [2022-01-11 06:13:55,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:55" (1/1) ... [2022-01-11 06:13:55,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:55" (1/1) ... [2022-01-11 06:13:55,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:55" (1/1) ... [2022-01-11 06:13:55,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:55" (1/1) ... [2022-01-11 06:13:55,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:13:55,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:13:55,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:13:55,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:13:55,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:55" (1/1) ... [2022-01-11 06:13:55,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:13:55,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:13:55,190 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 06:13:55,208 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 06:13:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:13:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:13:55,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:13:55,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:13:55,286 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:13:55,288 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:13:55,625 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:13:55,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:13:55,632 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 06:13:55,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:13:55 BoogieIcfgContainer [2022-01-11 06:13:55,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:13:55,634 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:13:55,634 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:13:55,647 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:13:55,650 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:13:55" (1/1) ... [2022-01-11 06:13:55,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:13:55 BasicIcfg [2022-01-11 06:13:55,891 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:13:55,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:13:55,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:13:55,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:13:55,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:13:54" (1/4) ... [2022-01-11 06:13:55,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54353feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:13:55, skipping insertion in model container [2022-01-11 06:13:55,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:55" (2/4) ... [2022-01-11 06:13:55,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54353feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:13:55, skipping insertion in model container [2022-01-11 06:13:55,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:13:55" (3/4) ... [2022-01-11 06:13:55,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54353feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:13:55, skipping insertion in model container [2022-01-11 06:13:55,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:13:55" (4/4) ... [2022-01-11 06:13:55,903 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.cTransformedIcfg [2022-01-11 06:13:55,907 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:13:55,907 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:13:55,960 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:13:55,966 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 06:13:55,966 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:13:55,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 61 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:55,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-11 06:13:55,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:55,984 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] [2022-01-11 06:13:55,984 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:55,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:55,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1481866810, now seen corresponding path program 1 times [2022-01-11 06:13:55,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:55,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222208679] [2022-01-11 06:13:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:55,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:56,238 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 06:13:56,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:56,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222208679] [2022-01-11 06:13:56,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222208679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:56,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:56,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:13:56,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260206289] [2022-01-11 06:13:56,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:56,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 06:13:56,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:56,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 06:13:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:13:56,281 INFO L87 Difference]: Start difference. First operand has 62 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 61 states have internal predecessors, (101), 0 states have call successors, (0), 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 12.5) internal successors, (25), 2 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) [2022-01-11 06:13:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:56,311 INFO L93 Difference]: Finished difference Result 103 states and 164 transitions. [2022-01-11 06:13:56,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 06:13:56,314 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 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) Word has length 25 [2022-01-11 06:13:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:56,324 INFO L225 Difference]: With dead ends: 103 [2022-01-11 06:13:56,324 INFO L226 Difference]: Without dead ends: 58 [2022-01-11 06:13:56,329 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 [2022-01-11 06:13:56,333 INFO L933 BasicCegarLoop]: 98 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, 98 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 [2022-01-11 06:13:56,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:13:56,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-11 06:13:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-01-11 06:13:56,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.6491228070175439) internal successors, (94), 57 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:56,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 94 transitions. [2022-01-11 06:13:56,374 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 94 transitions. Word has length 25 [2022-01-11 06:13:56,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:56,375 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 94 transitions. [2022-01-11 06:13:56,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 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) [2022-01-11 06:13:56,377 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 94 transitions. [2022-01-11 06:13:56,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-11 06:13:56,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:56,378 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] [2022-01-11 06:13:56,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:13:56,378 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:56,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1073042585, now seen corresponding path program 1 times [2022-01-11 06:13:56,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:56,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884548721] [2022-01-11 06:13:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:56,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:56,572 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 06:13:56,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:56,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884548721] [2022-01-11 06:13:56,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884548721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:56,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:56,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:13:56,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422666678] [2022-01-11 06:13:56,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:56,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:13:56,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:56,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:13:56,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:13:56,578 INFO L87 Difference]: Start difference. First operand 58 states and 94 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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) [2022-01-11 06:13:56,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:56,671 INFO L93 Difference]: Finished difference Result 134 states and 210 transitions. [2022-01-11 06:13:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:13:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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) Word has length 25 [2022-01-11 06:13:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:56,675 INFO L225 Difference]: With dead ends: 134 [2022-01-11 06:13:56,675 INFO L226 Difference]: Without dead ends: 94 [2022-01-11 06:13:56,676 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 06:13:56,677 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 58 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:56,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 339 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:13:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-11 06:13:56,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 58. [2022-01-11 06:13:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:56,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2022-01-11 06:13:56,685 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 25 [2022-01-11 06:13:56,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:56,686 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2022-01-11 06:13:56,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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) [2022-01-11 06:13:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2022-01-11 06:13:56,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-11 06:13:56,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:56,691 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] [2022-01-11 06:13:56,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:13:56,693 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:56,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:56,697 INFO L85 PathProgramCache]: Analyzing trace with hash 536619058, now seen corresponding path program 1 times [2022-01-11 06:13:56,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:56,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894309924] [2022-01-11 06:13:56,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:56,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:56,854 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 06:13:56,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:56,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894309924] [2022-01-11 06:13:56,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894309924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:56,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:56,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:13:56,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551366192] [2022-01-11 06:13:56,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:56,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:13:56,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:56,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:13:56,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:56,859 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) [2022-01-11 06:13:58,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:13:58,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:58,980 INFO L93 Difference]: Finished difference Result 124 states and 180 transitions. [2022-01-11 06:13:58,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:13:58,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) Word has length 40 [2022-01-11 06:13:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:58,981 INFO L225 Difference]: With dead ends: 124 [2022-01-11 06:13:58,981 INFO L226 Difference]: Without dead ends: 88 [2022-01-11 06:13:58,981 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 06:13:58,982 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 46 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:58,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 174 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 06:13:58,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-11 06:13:58,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2022-01-11 06:13:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 85 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 122 transitions. [2022-01-11 06:13:58,988 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 122 transitions. Word has length 40 [2022-01-11 06:13:58,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:58,989 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 122 transitions. [2022-01-11 06:13:58,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) [2022-01-11 06:13:58,989 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 122 transitions. [2022-01-11 06:13:58,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-11 06:13:58,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:58,990 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] [2022-01-11 06:13:58,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:13:58,990 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:58,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:58,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1408020909, now seen corresponding path program 1 times [2022-01-11 06:13:58,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:58,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495547236] [2022-01-11 06:13:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:58,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:59,121 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 06:13:59,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:59,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495547236] [2022-01-11 06:13:59,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495547236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:59,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:59,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:13:59,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69646103] [2022-01-11 06:13:59,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:59,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:13:59,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:59,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:13:59,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:59,125 INFO L87 Difference]: Start difference. First operand 86 states and 122 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) [2022-01-11 06:13:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:59,153 INFO L93 Difference]: Finished difference Result 202 states and 302 transitions. [2022-01-11 06:13:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:13:59,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) Word has length 40 [2022-01-11 06:13:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:59,157 INFO L225 Difference]: With dead ends: 202 [2022-01-11 06:13:59,158 INFO L226 Difference]: Without dead ends: 138 [2022-01-11 06:13:59,161 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 06:13:59,163 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 42 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:59,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 173 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:13:59,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-01-11 06:13:59,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2022-01-11 06:13:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.474074074074074) internal successors, (199), 135 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 199 transitions. [2022-01-11 06:13:59,179 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 199 transitions. Word has length 40 [2022-01-11 06:13:59,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:59,179 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 199 transitions. [2022-01-11 06:13:59,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) [2022-01-11 06:13:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 199 transitions. [2022-01-11 06:13:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-11 06:13:59,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:59,180 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] [2022-01-11 06:13:59,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:13:59,180 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash 925674740, now seen corresponding path program 1 times [2022-01-11 06:13:59,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:59,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014914353] [2022-01-11 06:13:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:59,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:59,507 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 06:13:59,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:59,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014914353] [2022-01-11 06:13:59,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014914353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:59,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:59,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:13:59,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796660829] [2022-01-11 06:13:59,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:59,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:13:59,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:59,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:13:59,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:13:59,510 INFO L87 Difference]: Start difference. First operand 136 states and 199 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2022-01-11 06:13:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:59,929 INFO L93 Difference]: Finished difference Result 820 states and 1261 transitions. [2022-01-11 06:13:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:13:59,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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) Word has length 40 [2022-01-11 06:13:59,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:59,934 INFO L225 Difference]: With dead ends: 820 [2022-01-11 06:13:59,934 INFO L226 Difference]: Without dead ends: 706 [2022-01-11 06:13:59,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:13:59,941 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 375 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:59,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 411 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:13:59,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-01-11 06:14:00,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 248. [2022-01-11 06:14:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.48582995951417) internal successors, (367), 247 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 367 transitions. [2022-01-11 06:14:00,018 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 367 transitions. Word has length 40 [2022-01-11 06:14:00,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:00,022 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 367 transitions. [2022-01-11 06:14:00,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2022-01-11 06:14:00,024 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 367 transitions. [2022-01-11 06:14:00,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-11 06:14:00,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:00,025 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] [2022-01-11 06:14:00,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:14:00,025 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:00,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:00,026 INFO L85 PathProgramCache]: Analyzing trace with hash -433492746, now seen corresponding path program 1 times [2022-01-11 06:14:00,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:00,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289504985] [2022-01-11 06:14:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:00,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:00,197 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 06:14:00,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:00,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289504985] [2022-01-11 06:14:00,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289504985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:00,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:00,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:14:00,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45474006] [2022-01-11 06:14:00,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:00,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:14:00,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:00,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:14:00,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:14:00,199 INFO L87 Difference]: Start difference. First operand 248 states and 367 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:02,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:14:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:02,414 INFO L93 Difference]: Finished difference Result 600 states and 893 transitions. [2022-01-11 06:14:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:14:02,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-01-11 06:14:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:02,416 INFO L225 Difference]: With dead ends: 600 [2022-01-11 06:14:02,416 INFO L226 Difference]: Without dead ends: 374 [2022-01-11 06:14:02,416 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 06:14:02,417 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 43 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:14:02,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 185 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:14:02,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-01-11 06:14:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 372. [2022-01-11 06:14:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.4420485175202156) internal successors, (535), 371 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:02,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 535 transitions. [2022-01-11 06:14:02,477 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 535 transitions. Word has length 42 [2022-01-11 06:14:02,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:02,477 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 535 transitions. [2022-01-11 06:14:02,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:02,478 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 535 transitions. [2022-01-11 06:14:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-11 06:14:02,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:02,478 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] [2022-01-11 06:14:02,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:14:02,479 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:02,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:02,479 INFO L85 PathProgramCache]: Analyzing trace with hash -402093032, now seen corresponding path program 1 times [2022-01-11 06:14:02,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:02,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889332692] [2022-01-11 06:14:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:02,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:02,726 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 06:14:02,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:02,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889332692] [2022-01-11 06:14:02,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889332692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:02,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:02,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:14:02,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043425550] [2022-01-11 06:14:02,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:02,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:14:02,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:14:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:14:02,728 INFO L87 Difference]: Start difference. First operand 372 states and 535 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:03,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:03,230 INFO L93 Difference]: Finished difference Result 1428 states and 2077 transitions. [2022-01-11 06:14:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:14:03,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-01-11 06:14:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:03,235 INFO L225 Difference]: With dead ends: 1428 [2022-01-11 06:14:03,236 INFO L226 Difference]: Without dead ends: 1078 [2022-01-11 06:14:03,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:14:03,237 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 324 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:14:03,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 429 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:14:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2022-01-11 06:14:03,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 372. [2022-01-11 06:14:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.431266846361186) internal successors, (531), 371 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:03,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 531 transitions. [2022-01-11 06:14:03,300 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 531 transitions. Word has length 42 [2022-01-11 06:14:03,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:03,301 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 531 transitions. [2022-01-11 06:14:03,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:03,301 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 531 transitions. [2022-01-11 06:14:03,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-11 06:14:03,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:03,301 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] [2022-01-11 06:14:03,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:14:03,301 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1653641233, now seen corresponding path program 1 times [2022-01-11 06:14:03,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:03,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514781688] [2022-01-11 06:14:03,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:03,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:03,369 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 06:14:03,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:03,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514781688] [2022-01-11 06:14:03,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514781688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:03,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:03,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:14:03,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929484460] [2022-01-11 06:14:03,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:03,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:14:03,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:03,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:14:03,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:14:03,371 INFO L87 Difference]: Start difference. First operand 372 states and 531 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:03,510 INFO L93 Difference]: Finished difference Result 1000 states and 1429 transitions. [2022-01-11 06:14:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:14:03,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-01-11 06:14:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:03,513 INFO L225 Difference]: With dead ends: 1000 [2022-01-11 06:14:03,514 INFO L226 Difference]: Without dead ends: 650 [2022-01-11 06:14:03,514 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 06:14:03,515 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 38 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:14:03,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 172 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:14:03,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-01-11 06:14:03,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 648. [2022-01-11 06:14:03,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 1.401854714064915) internal successors, (907), 647 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 907 transitions. [2022-01-11 06:14:03,641 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 907 transitions. Word has length 42 [2022-01-11 06:14:03,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:03,641 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 907 transitions. [2022-01-11 06:14:03,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:03,641 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 907 transitions. [2022-01-11 06:14:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-11 06:14:03,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:03,645 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] [2022-01-11 06:14:03,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:14:03,645 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:03,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:03,646 INFO L85 PathProgramCache]: Analyzing trace with hash -518430976, now seen corresponding path program 1 times [2022-01-11 06:14:03,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:03,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115357318] [2022-01-11 06:14:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:03,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:03,812 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 06:14:03,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:03,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115357318] [2022-01-11 06:14:03,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115357318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:03,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:03,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:14:03,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212935052] [2022-01-11 06:14:03,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:03,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:14:03,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:03,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:14:03,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:14:03,815 INFO L87 Difference]: Start difference. First operand 648 states and 907 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:05,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:14:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:06,236 INFO L93 Difference]: Finished difference Result 1458 states and 2059 transitions. [2022-01-11 06:14:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:14:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-11 06:14:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:06,240 INFO L225 Difference]: With dead ends: 1458 [2022-01-11 06:14:06,240 INFO L226 Difference]: Without dead ends: 832 [2022-01-11 06:14:06,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:14:06,243 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 30 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:14:06,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 144 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:14:06,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-01-11 06:14:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 830. [2022-01-11 06:14:06,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 1.4004825090470445) internal successors, (1161), 829 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1161 transitions. [2022-01-11 06:14:06,458 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1161 transitions. Word has length 43 [2022-01-11 06:14:06,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:06,458 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 1161 transitions. [2022-01-11 06:14:06,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1161 transitions. [2022-01-11 06:14:06,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-11 06:14:06,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:06,459 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] [2022-01-11 06:14:06,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:14:06,460 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:06,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:06,460 INFO L85 PathProgramCache]: Analyzing trace with hash 392160730, now seen corresponding path program 1 times [2022-01-11 06:14:06,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:06,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469553490] [2022-01-11 06:14:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:06,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:06,560 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 06:14:06,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:06,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469553490] [2022-01-11 06:14:06,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469553490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:06,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:06,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:14:06,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400332247] [2022-01-11 06:14:06,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:06,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:14:06,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:06,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:14:06,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:14:06,562 INFO L87 Difference]: Start difference. First operand 830 states and 1161 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:06,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:06,839 INFO L93 Difference]: Finished difference Result 1101 states and 1544 transitions. [2022-01-11 06:14:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:14:06,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-11 06:14:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:06,848 INFO L225 Difference]: With dead ends: 1101 [2022-01-11 06:14:06,848 INFO L226 Difference]: Without dead ends: 1099 [2022-01-11 06:14:06,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:14:06,849 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 179 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:14:06,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 323 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:14:06,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-01-11 06:14:07,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 854. [2022-01-11 06:14:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 1.3751465416178195) internal successors, (1173), 853 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1173 transitions. [2022-01-11 06:14:07,074 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1173 transitions. Word has length 43 [2022-01-11 06:14:07,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:07,074 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1173 transitions. [2022-01-11 06:14:07,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:07,074 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1173 transitions. [2022-01-11 06:14:07,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:14:07,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:07,075 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:14:07,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:14:07,076 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:07,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:07,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1914712865, now seen corresponding path program 1 times [2022-01-11 06:14:07,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:07,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581180922] [2022-01-11 06:14:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:07,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:14:07,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:07,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581180922] [2022-01-11 06:14:07,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581180922] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:07,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:07,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:14:07,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038343734] [2022-01-11 06:14:07,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:07,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:14:07,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:07,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:14:07,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:14:07,152 INFO L87 Difference]: Start difference. First operand 854 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:07,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:07,388 INFO L93 Difference]: Finished difference Result 1686 states and 2323 transitions. [2022-01-11 06:14:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:14:07,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-11 06:14:07,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:07,392 INFO L225 Difference]: With dead ends: 1686 [2022-01-11 06:14:07,392 INFO L226 Difference]: Without dead ends: 856 [2022-01-11 06:14:07,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:14:07,394 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 31 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:14:07,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 161 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:14:07,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-01-11 06:14:07,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 854. [2022-01-11 06:14:07,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 1.3563892145369285) internal successors, (1157), 853 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1157 transitions. [2022-01-11 06:14:07,587 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1157 transitions. Word has length 63 [2022-01-11 06:14:07,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:07,587 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1157 transitions. [2022-01-11 06:14:07,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1157 transitions. [2022-01-11 06:14:07,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:14:07,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:07,589 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:14:07,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:14:07,589 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:07,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1557394878, now seen corresponding path program 1 times [2022-01-11 06:14:07,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:07,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38503304] [2022-01-11 06:14:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:07,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:14:08,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:08,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38503304] [2022-01-11 06:14:08,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38503304] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:14:08,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267080516] [2022-01-11 06:14:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:08,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:14:08,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:14:08,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 06:14:08,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process