/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:40:53,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:40:53,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:40:53,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:40:53,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:40:53,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:40:53,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:40:53,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:40:53,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:40:53,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:40:53,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:40:53,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:40:53,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:40:53,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:40:53,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:40:53,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:40:53,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:40:53,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:40:53,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:40:53,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:40:53,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:40:53,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:40:53,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:40:53,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:40:53,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:40:53,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:40:53,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:40:53,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:40:53,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:40:53,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:40:53,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:40:53,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:40:53,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:40:53,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:40:53,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:40:53,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:40:53,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:40:53,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:40:53,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:40:53,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:40:53,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:40:53,907 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:40:53,928 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:40:53,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:40:53,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:40:53,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:40:53,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:40:53,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:40:53,935 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:40:53,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:40:53,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:40:53,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:40:53,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:40:53,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:40:53,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:40:53,937 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:40:53,937 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:40:53,937 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:40:53,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:40:53,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:40:53,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:40:53,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:40:53,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:40:53,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:40:53,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:40:53,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:40:53,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:40:53,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:40:53,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:40:53,943 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:40:53,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:40:53,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:40:53,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:40:53,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:40:53,944 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:40:53,945 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:40:54,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:40:54,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:40:54,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:40:54,146 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:40:54,147 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:40:54,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2022-01-10 18:40:54,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91b95ae86/46d4f780c5a64b5a9a1e93067db41b5c/FLAG211891fe4 [2022-01-10 18:40:54,572 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:40:54,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2022-01-10 18:40:54,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91b95ae86/46d4f780c5a64b5a9a1e93067db41b5c/FLAG211891fe4 [2022-01-10 18:40:54,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91b95ae86/46d4f780c5a64b5a9a1e93067db41b5c [2022-01-10 18:40:54,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:40:54,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:40:54,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:40:54,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:40:54,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:40:54,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:40:54" (1/1) ... [2022-01-10 18:40:54,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3ad385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:54, skipping insertion in model container [2022-01-10 18:40:54,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:40:54" (1/1) ... [2022-01-10 18:40:54,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:40:55,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:40:55,307 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_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c[65471,65484] [2022-01-10 18:40:55,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:40:55,318 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:40:55,411 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_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c[65471,65484] [2022-01-10 18:40:55,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:40:55,423 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:40:55,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:55 WrapperNode [2022-01-10 18:40:55,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:40:55,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:40:55,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:40:55,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:40:55,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:55" (1/1) ... [2022-01-10 18:40:55,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:55" (1/1) ... [2022-01-10 18:40:55,513 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2099 [2022-01-10 18:40:55,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:40:55,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:40:55,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:40:55,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:40:55,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:55" (1/1) ... [2022-01-10 18:40:55,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:55" (1/1) ... [2022-01-10 18:40:55,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:55" (1/1) ... [2022-01-10 18:40:55,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:55" (1/1) ... [2022-01-10 18:40:55,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:55" (1/1) ... [2022-01-10 18:40:55,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:55" (1/1) ... [2022-01-10 18:40:55,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:55" (1/1) ... [2022-01-10 18:40:55,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:40:55,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:40:55,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:40:55,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:40:55,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:55" (1/1) ... [2022-01-10 18:40:55,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:40:55,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:40:55,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:40:55,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:40:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:40:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:40:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:40:55,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:40:55,933 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:40:55,934 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:40:57,163 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:40:57,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:40:57,180 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:40:57,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:40:57 BoogieIcfgContainer [2022-01-10 18:40:57,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:40:57,184 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:40:57,184 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:40:57,186 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:40:57,188 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:40:57" (1/1) ... [2022-01-10 18:40:57,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:40:57 BasicIcfg [2022-01-10 18:40:57,821 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:40:57,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:40:57,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:40:57,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:40:57,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:40:54" (1/4) ... [2022-01-10 18:40:57,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da82d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:40:57, skipping insertion in model container [2022-01-10 18:40:57,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:40:55" (2/4) ... [2022-01-10 18:40:57,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da82d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:40:57, skipping insertion in model container [2022-01-10 18:40:57,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:40:57" (3/4) ... [2022-01-10 18:40:57,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da82d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:40:57, skipping insertion in model container [2022-01-10 18:40:57,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:40:57" (4/4) ... [2022-01-10 18:40:57,828 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.cTransformedIcfg [2022-01-10 18:40:57,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:40:57,834 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:40:57,876 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:40:57,882 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:40:57,882 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:40:57,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 736 states, 734 states have (on average 1.8501362397820162) internal successors, (1358), 735 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:57,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 18:40:57,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:57,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:57,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1532339600, now seen corresponding path program 1 times [2022-01-10 18:40:57,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:57,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825447117] [2022-01-10 18:40:57,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:57,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:40:58,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:58,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825447117] [2022-01-10 18:40:58,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825447117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:58,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:58,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:40:58,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674495083] [2022-01-10 18:40:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:58,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:40:58,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:58,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:40:58,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:40:58,429 INFO L87 Difference]: Start difference. First operand has 736 states, 734 states have (on average 1.8501362397820162) internal successors, (1358), 735 states have internal predecessors, (1358), 0 states have call successors, (0), 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 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:58,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:58,499 INFO L93 Difference]: Finished difference Result 922 states and 1680 transitions. [2022-01-10 18:40:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:40:58,501 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-01-10 18:40:58,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:58,519 INFO L225 Difference]: With dead ends: 922 [2022-01-10 18:40:58,519 INFO L226 Difference]: Without dead ends: 732 [2022-01-10 18:40:58,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:40:58,530 INFO L933 BasicCegarLoop]: 1355 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, 1355 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:58,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:40:58,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-01-10 18:40:58,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2022-01-10 18:40:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.8481532147742818) internal successors, (1351), 731 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:58,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1351 transitions. [2022-01-10 18:40:58,680 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1351 transitions. Word has length 153 [2022-01-10 18:40:58,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:58,682 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1351 transitions. [2022-01-10 18:40:58,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:58,683 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1351 transitions. [2022-01-10 18:40:58,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 18:40:58,689 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:58,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:58,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:40:58,690 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:58,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:58,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1277603055, now seen corresponding path program 1 times [2022-01-10 18:40:58,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:58,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019458502] [2022-01-10 18:40:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:58,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:40:59,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:59,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019458502] [2022-01-10 18:40:59,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019458502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:59,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:59,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:40:59,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555957501] [2022-01-10 18:40:59,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:59,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:40:59,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:59,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:40:59,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:40:59,062 INFO L87 Difference]: Start difference. First operand 732 states and 1351 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:59,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:40:59,181 INFO L93 Difference]: Finished difference Result 917 states and 1670 transitions. [2022-01-10 18:40:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:40:59,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-01-10 18:40:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:40:59,185 INFO L225 Difference]: With dead ends: 917 [2022-01-10 18:40:59,185 INFO L226 Difference]: Without dead ends: 732 [2022-01-10 18:40:59,191 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 [2022-01-10 18:40:59,193 INFO L933 BasicCegarLoop]: 1349 mSDtfsCounter, 3 mSDsluCounter, 3979 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5328 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:40:59,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5328 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:40:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-01-10 18:40:59,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2022-01-10 18:40:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.759233926128591) internal successors, (1286), 731 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1286 transitions. [2022-01-10 18:40:59,210 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1286 transitions. Word has length 153 [2022-01-10 18:40:59,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:40:59,212 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1286 transitions. [2022-01-10 18:40:59,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:40:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1286 transitions. [2022-01-10 18:40:59,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-01-10 18:40:59,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:40:59,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:40:59,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:40:59,219 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:40:59,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:40:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash 951104827, now seen corresponding path program 1 times [2022-01-10 18:40:59,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:40:59,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663660048] [2022-01-10 18:40:59,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:40:59,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:40:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:40:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:40:59,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:40:59,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663660048] [2022-01-10 18:40:59,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663660048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:40:59,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:40:59,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:40:59,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214880961] [2022-01-10 18:40:59,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:40:59,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:40:59,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:40:59,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:40:59,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:40:59,641 INFO L87 Difference]: Start difference. First operand 732 states and 1286 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:01,676 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 [] [2022-01-10 18:41:01,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:01,876 INFO L93 Difference]: Finished difference Result 1080 states and 1890 transitions. [2022-01-10 18:41:01,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:01,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2022-01-10 18:41:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:01,880 INFO L225 Difference]: With dead ends: 1080 [2022-01-10 18:41:01,880 INFO L226 Difference]: Without dead ends: 899 [2022-01-10 18:41:01,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:01,881 INFO L933 BasicCegarLoop]: 1285 mSDtfsCounter, 281 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:01,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2502 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 18:41:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-01-10 18:41:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 897. [2022-01-10 18:41:01,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 1.7511160714285714) internal successors, (1569), 896 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1569 transitions. [2022-01-10 18:41:01,935 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1569 transitions. Word has length 217 [2022-01-10 18:41:01,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:01,937 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1569 transitions. [2022-01-10 18:41:01,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:01,937 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1569 transitions. [2022-01-10 18:41:01,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-10 18:41:01,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:01,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:01,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:41:01,940 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:01,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:01,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2084714595, now seen corresponding path program 1 times [2022-01-10 18:41:01,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:01,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653047503] [2022-01-10 18:41:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:01,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:02,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:02,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653047503] [2022-01-10 18:41:02,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653047503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:02,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:02,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:41:02,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407109798] [2022-01-10 18:41:02,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:02,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:41:02,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:02,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:41:02,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:41:02,200 INFO L87 Difference]: Start difference. First operand 897 states and 1569 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:02,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:02,357 INFO L93 Difference]: Finished difference Result 2594 states and 4528 transitions. [2022-01-10 18:41:02,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:41:02,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2022-01-10 18:41:02,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:02,364 INFO L225 Difference]: With dead ends: 2594 [2022-01-10 18:41:02,364 INFO L226 Difference]: Without dead ends: 1774 [2022-01-10 18:41:02,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:41:02,373 INFO L933 BasicCegarLoop]: 1256 mSDtfsCounter, 3598 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3598 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:02,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3598 Valid, 2497 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:41:02,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2022-01-10 18:41:02,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1772. [2022-01-10 18:41:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1771 states have (on average 1.743647656691135) internal successors, (3088), 1771 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 3088 transitions. [2022-01-10 18:41:02,424 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 3088 transitions. Word has length 221 [2022-01-10 18:41:02,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:02,424 INFO L470 AbstractCegarLoop]: Abstraction has 1772 states and 3088 transitions. [2022-01-10 18:41:02,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 3088 transitions. [2022-01-10 18:41:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-01-10 18:41:02,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:02,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:02,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:41:02,429 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:02,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:02,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1826338028, now seen corresponding path program 1 times [2022-01-10 18:41:02,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:02,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106530001] [2022-01-10 18:41:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:02,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:02,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:02,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106530001] [2022-01-10 18:41:02,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106530001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:02,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:02,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:41:02,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296290286] [2022-01-10 18:41:02,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:02,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:41:02,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:02,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:41:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:02,633 INFO L87 Difference]: Start difference. First operand 1772 states and 3088 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:02,691 INFO L93 Difference]: Finished difference Result 2431 states and 4234 transitions. [2022-01-10 18:41:02,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:02,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2022-01-10 18:41:02,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:02,698 INFO L225 Difference]: With dead ends: 2431 [2022-01-10 18:41:02,698 INFO L226 Difference]: Without dead ends: 2075 [2022-01-10 18:41:02,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:02,699 INFO L933 BasicCegarLoop]: 1536 mSDtfsCounter, 290 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2772 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 [2022-01-10 18:41:02,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2772 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:41:02,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-01-10 18:41:02,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2073. [2022-01-10 18:41:02,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2072 states have (on average 1.7417953667953667) internal successors, (3609), 2072 states have internal predecessors, (3609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3609 transitions. [2022-01-10 18:41:02,749 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3609 transitions. Word has length 222 [2022-01-10 18:41:02,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:02,752 INFO L470 AbstractCegarLoop]: Abstraction has 2073 states and 3609 transitions. [2022-01-10 18:41:02,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:02,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3609 transitions. [2022-01-10 18:41:02,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-01-10 18:41:02,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:02,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:02,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:41:02,757 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:02,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:02,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2012772439, now seen corresponding path program 1 times [2022-01-10 18:41:02,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:02,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808403642] [2022-01-10 18:41:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:02,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:02,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:02,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808403642] [2022-01-10 18:41:02,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808403642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:02,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:02,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:41:02,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004322016] [2022-01-10 18:41:02,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:02,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:41:02,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:02,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:41:02,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:02,926 INFO L87 Difference]: Start difference. First operand 2073 states and 3609 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:02,994 INFO L93 Difference]: Finished difference Result 3388 states and 5892 transitions. [2022-01-10 18:41:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:02,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2022-01-10 18:41:02,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:03,002 INFO L225 Difference]: With dead ends: 3388 [2022-01-10 18:41:03,002 INFO L226 Difference]: Without dead ends: 2409 [2022-01-10 18:41:03,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:03,004 INFO L933 BasicCegarLoop]: 1291 mSDtfsCounter, 301 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:03,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2545 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:41:03,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2022-01-10 18:41:03,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2389. [2022-01-10 18:41:03,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 2388 states have (on average 1.7374371859296482) internal successors, (4149), 2388 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 4149 transitions. [2022-01-10 18:41:03,087 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 4149 transitions. Word has length 222 [2022-01-10 18:41:03,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:03,088 INFO L470 AbstractCegarLoop]: Abstraction has 2389 states and 4149 transitions. [2022-01-10 18:41:03,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 4149 transitions. [2022-01-10 18:41:03,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-10 18:41:03,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:03,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:03,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:41:03,092 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:03,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:03,093 INFO L85 PathProgramCache]: Analyzing trace with hash -451230328, now seen corresponding path program 1 times [2022-01-10 18:41:03,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:03,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117413646] [2022-01-10 18:41:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:03,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:03,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:03,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117413646] [2022-01-10 18:41:03,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117413646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:03,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:03,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:41:03,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021066601] [2022-01-10 18:41:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:03,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:41:03,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:03,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:41:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:41:03,289 INFO L87 Difference]: Start difference. First operand 2389 states and 4149 transitions. Second operand has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:03,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:03,471 INFO L93 Difference]: Finished difference Result 7109 states and 12346 transitions. [2022-01-10 18:41:03,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:41:03,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 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 223 [2022-01-10 18:41:03,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:03,487 INFO L225 Difference]: With dead ends: 7109 [2022-01-10 18:41:03,487 INFO L226 Difference]: Without dead ends: 4734 [2022-01-10 18:41:03,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:41:03,491 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 4549 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4549 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:03,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4549 Valid, 2782 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:41:03,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2022-01-10 18:41:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 4732. [2022-01-10 18:41:03,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4732 states, 4731 states have (on average 1.7296554639611077) internal successors, (8183), 4731 states have internal predecessors, (8183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 8183 transitions. [2022-01-10 18:41:03,629 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 8183 transitions. Word has length 223 [2022-01-10 18:41:03,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:03,629 INFO L470 AbstractCegarLoop]: Abstraction has 4732 states and 8183 transitions. [2022-01-10 18:41:03,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:03,630 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 8183 transitions. [2022-01-10 18:41:03,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-01-10 18:41:03,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:03,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:03,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:41:03,635 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:03,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:03,635 INFO L85 PathProgramCache]: Analyzing trace with hash -371767078, now seen corresponding path program 1 times [2022-01-10 18:41:03,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:03,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658877119] [2022-01-10 18:41:03,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:03,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:03,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:03,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658877119] [2022-01-10 18:41:03,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658877119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:03,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:03,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:41:03,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134100863] [2022-01-10 18:41:03,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:03,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:41:03,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:03,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:41:03,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:41:03,864 INFO L87 Difference]: Start difference. First operand 4732 states and 8183 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:04,188 INFO L93 Difference]: Finished difference Result 13965 states and 24139 transitions. [2022-01-10 18:41:04,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:41:04,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2022-01-10 18:41:04,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:04,219 INFO L225 Difference]: With dead ends: 13965 [2022-01-10 18:41:04,220 INFO L226 Difference]: Without dead ends: 9399 [2022-01-10 18:41:04,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:41:04,229 INFO L933 BasicCegarLoop]: 1572 mSDtfsCounter, 3279 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:04,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3279 Valid, 2813 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:41:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9399 states. [2022-01-10 18:41:04,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9399 to 9397. [2022-01-10 18:41:04,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9397 states, 9396 states have (on average 1.7231800766283525) internal successors, (16191), 9396 states have internal predecessors, (16191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:04,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9397 states to 9397 states and 16191 transitions. [2022-01-10 18:41:04,666 INFO L78 Accepts]: Start accepts. Automaton has 9397 states and 16191 transitions. Word has length 226 [2022-01-10 18:41:04,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:04,667 INFO L470 AbstractCegarLoop]: Abstraction has 9397 states and 16191 transitions. [2022-01-10 18:41:04,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 9397 states and 16191 transitions. [2022-01-10 18:41:04,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-01-10 18:41:04,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:04,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:04,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:41:04,679 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash 570205521, now seen corresponding path program 1 times [2022-01-10 18:41:04,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:04,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757123466] [2022-01-10 18:41:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:04,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:04,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:04,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:04,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757123466] [2022-01-10 18:41:04,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757123466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:04,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:04,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:41:04,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061223829] [2022-01-10 18:41:04,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:04,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:41:04,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:04,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:41:04,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:41:04,875 INFO L87 Difference]: Start difference. First operand 9397 states and 16191 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:05,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:05,487 INFO L93 Difference]: Finished difference Result 27820 states and 47925 transitions. [2022-01-10 18:41:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:41:05,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 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 228 [2022-01-10 18:41:05,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:05,522 INFO L225 Difference]: With dead ends: 27820 [2022-01-10 18:41:05,522 INFO L226 Difference]: Without dead ends: 18484 [2022-01-10 18:41:05,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:41:05,540 INFO L933 BasicCegarLoop]: 1561 mSDtfsCounter, 3249 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3249 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:05,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3249 Valid, 2802 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:41:05,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18484 states. [2022-01-10 18:41:06,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18484 to 18482. [2022-01-10 18:41:06,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18482 states, 18481 states have (on average 1.7147881608138087) internal successors, (31691), 18481 states have internal predecessors, (31691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18482 states to 18482 states and 31691 transitions. [2022-01-10 18:41:06,223 INFO L78 Accepts]: Start accepts. Automaton has 18482 states and 31691 transitions. Word has length 228 [2022-01-10 18:41:06,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:06,223 INFO L470 AbstractCegarLoop]: Abstraction has 18482 states and 31691 transitions. [2022-01-10 18:41:06,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:06,224 INFO L276 IsEmpty]: Start isEmpty. Operand 18482 states and 31691 transitions. [2022-01-10 18:41:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-10 18:41:06,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:06,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:06,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:41:06,242 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:06,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash -909532760, now seen corresponding path program 1 times [2022-01-10 18:41:06,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:06,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89302277] [2022-01-10 18:41:06,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:06,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:06,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:06,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89302277] [2022-01-10 18:41:06,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89302277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:06,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:06,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:41:06,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277156714] [2022-01-10 18:41:06,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:06,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:41:06,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:06,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:41:06,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:06,608 INFO L87 Difference]: Start difference. First operand 18482 states and 31691 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:09,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:41:11,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:41:11,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:11,846 INFO L93 Difference]: Finished difference Result 37619 states and 64401 transitions. [2022-01-10 18:41:11,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:11,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2022-01-10 18:41:11,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:11,910 INFO L225 Difference]: With dead ends: 37619 [2022-01-10 18:41:11,911 INFO L226 Difference]: Without dead ends: 27688 [2022-01-10 18:41:11,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:11,929 INFO L933 BasicCegarLoop]: 1297 mSDtfsCounter, 278 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:11,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 2523 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-10 18:41:11,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27688 states. [2022-01-10 18:41:12,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27688 to 27686. [2022-01-10 18:41:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27686 states, 27685 states have (on average 1.7098067545602311) internal successors, (47336), 27685 states have internal predecessors, (47336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27686 states to 27686 states and 47336 transitions. [2022-01-10 18:41:12,894 INFO L78 Accepts]: Start accepts. Automaton has 27686 states and 47336 transitions. Word has length 230 [2022-01-10 18:41:12,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:12,895 INFO L470 AbstractCegarLoop]: Abstraction has 27686 states and 47336 transitions. [2022-01-10 18:41:12,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 27686 states and 47336 transitions. [2022-01-10 18:41:12,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-10 18:41:12,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:12,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:12,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:41:12,918 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:12,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:12,919 INFO L85 PathProgramCache]: Analyzing trace with hash 329008234, now seen corresponding path program 1 times [2022-01-10 18:41:12,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:12,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433391336] [2022-01-10 18:41:12,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:12,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:13,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:13,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433391336] [2022-01-10 18:41:13,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433391336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:13,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:13,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:41:13,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118715636] [2022-01-10 18:41:13,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:13,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:41:13,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:13,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:41:13,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:13,069 INFO L87 Difference]: Start difference. First operand 27686 states and 47336 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:14,452 INFO L93 Difference]: Finished difference Result 79828 states and 136196 transitions. [2022-01-10 18:41:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2022-01-10 18:41:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:14,562 INFO L225 Difference]: With dead ends: 79828 [2022-01-10 18:41:14,563 INFO L226 Difference]: Without dead ends: 54005 [2022-01-10 18:41:14,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:14,599 INFO L933 BasicCegarLoop]: 2224 mSDtfsCounter, 1030 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:14,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 3479 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:41:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54005 states. [2022-01-10 18:41:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54005 to 54003. [2022-01-10 18:41:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54003 states, 54002 states have (on average 1.7009925558312655) internal successors, (91857), 54002 states have internal predecessors, (91857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54003 states to 54003 states and 91857 transitions. [2022-01-10 18:41:16,429 INFO L78 Accepts]: Start accepts. Automaton has 54003 states and 91857 transitions. Word has length 234 [2022-01-10 18:41:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:16,430 INFO L470 AbstractCegarLoop]: Abstraction has 54003 states and 91857 transitions. [2022-01-10 18:41:16,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:16,430 INFO L276 IsEmpty]: Start isEmpty. Operand 54003 states and 91857 transitions. [2022-01-10 18:41:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-01-10 18:41:16,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:16,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:16,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:41:16,477 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:16,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1390689349, now seen corresponding path program 1 times [2022-01-10 18:41:16,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:16,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291930359] [2022-01-10 18:41:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:16,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:16,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:16,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291930359] [2022-01-10 18:41:16,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291930359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:16,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:16,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:41:16,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544135818] [2022-01-10 18:41:16,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:16,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:41:16,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:16,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:41:16,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:16,619 INFO L87 Difference]: Start difference. First operand 54003 states and 91857 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:18,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:18,156 INFO L93 Difference]: Finished difference Result 110115 states and 187495 transitions. [2022-01-10 18:41:18,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:18,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-01-10 18:41:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:18,289 INFO L225 Difference]: With dead ends: 110115 [2022-01-10 18:41:18,290 INFO L226 Difference]: Without dead ends: 72351 [2022-01-10 18:41:18,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:18,330 INFO L933 BasicCegarLoop]: 1296 mSDtfsCounter, 289 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:18,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2551 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:41:18,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72351 states. [2022-01-10 18:41:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72351 to 71277. [2022-01-10 18:41:20,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71277 states, 71276 states have (on average 1.6906251753746002) internal successors, (120501), 71276 states have internal predecessors, (120501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71277 states to 71277 states and 120501 transitions. [2022-01-10 18:41:20,739 INFO L78 Accepts]: Start accepts. Automaton has 71277 states and 120501 transitions. Word has length 235 [2022-01-10 18:41:20,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:20,740 INFO L470 AbstractCegarLoop]: Abstraction has 71277 states and 120501 transitions. [2022-01-10 18:41:20,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:20,740 INFO L276 IsEmpty]: Start isEmpty. Operand 71277 states and 120501 transitions. [2022-01-10 18:41:20,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-01-10 18:41:20,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:20,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:20,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:41:20,784 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:20,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:20,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1209081318, now seen corresponding path program 1 times [2022-01-10 18:41:20,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:20,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018960137] [2022-01-10 18:41:20,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:20,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:20,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:20,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018960137] [2022-01-10 18:41:20,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018960137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:20,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:20,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:41:20,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101105282] [2022-01-10 18:41:20,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:20,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:41:20,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:41:20,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:20,863 INFO L87 Difference]: Start difference. First operand 71277 states and 120501 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:23,228 INFO L93 Difference]: Finished difference Result 143240 states and 241736 transitions. [2022-01-10 18:41:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:23,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-01-10 18:41:23,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:23,445 INFO L225 Difference]: With dead ends: 143240 [2022-01-10 18:41:23,445 INFO L226 Difference]: Without dead ends: 106647 [2022-01-10 18:41:23,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:23,498 INFO L933 BasicCegarLoop]: 1288 mSDtfsCounter, 1254 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:23,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 2559 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:41:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106647 states. [2022-01-10 18:41:25,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106647 to 71277. [2022-01-10 18:41:25,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71277 states, 71276 states have (on average 1.6903726359503901) internal successors, (120483), 71276 states have internal predecessors, (120483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71277 states to 71277 states and 120483 transitions. [2022-01-10 18:41:26,121 INFO L78 Accepts]: Start accepts. Automaton has 71277 states and 120483 transitions. Word has length 235 [2022-01-10 18:41:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:26,121 INFO L470 AbstractCegarLoop]: Abstraction has 71277 states and 120483 transitions. [2022-01-10 18:41:26,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:26,121 INFO L276 IsEmpty]: Start isEmpty. Operand 71277 states and 120483 transitions. [2022-01-10 18:41:26,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-01-10 18:41:26,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:26,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:26,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:41:26,164 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:26,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1776136173, now seen corresponding path program 1 times [2022-01-10 18:41:26,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:26,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672933930] [2022-01-10 18:41:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:26,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:26,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:26,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672933930] [2022-01-10 18:41:26,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672933930] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:26,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:26,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:41:26,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473383162] [2022-01-10 18:41:26,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:26,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:41:26,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:26,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:41:26,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:41:26,339 INFO L87 Difference]: Start difference. First operand 71277 states and 120483 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:30,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:30,125 INFO L93 Difference]: Finished difference Result 211119 states and 356977 transitions. [2022-01-10 18:41:30,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:41:30,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-01-10 18:41:30,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:30,363 INFO L225 Difference]: With dead ends: 211119 [2022-01-10 18:41:30,363 INFO L226 Difference]: Without dead ends: 141009 [2022-01-10 18:41:30,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:41:30,423 INFO L933 BasicCegarLoop]: 1275 mSDtfsCounter, 3441 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3441 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:30,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3441 Valid, 2516 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:41:30,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141009 states. [2022-01-10 18:41:34,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141009 to 141007. [2022-01-10 18:41:35,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141007 states, 141006 states have (on average 1.6865168858062778) internal successors, (237809), 141006 states have internal predecessors, (237809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141007 states to 141007 states and 237809 transitions. [2022-01-10 18:41:35,518 INFO L78 Accepts]: Start accepts. Automaton has 141007 states and 237809 transitions. Word has length 235 [2022-01-10 18:41:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:35,519 INFO L470 AbstractCegarLoop]: Abstraction has 141007 states and 237809 transitions. [2022-01-10 18:41:35,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:35,519 INFO L276 IsEmpty]: Start isEmpty. Operand 141007 states and 237809 transitions. [2022-01-10 18:41:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 18:41:35,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:35,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:35,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:41:35,586 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:35,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:35,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1252378641, now seen corresponding path program 1 times [2022-01-10 18:41:35,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:35,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067445274] [2022-01-10 18:41:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:35,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:35,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:35,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067445274] [2022-01-10 18:41:35,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067445274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:35,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:35,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:41:35,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287388064] [2022-01-10 18:41:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:35,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:41:35,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:35,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:41:35,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:35,736 INFO L87 Difference]: Start difference. First operand 141007 states and 237809 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:40,070 INFO L93 Difference]: Finished difference Result 247221 states and 417409 transitions. [2022-01-10 18:41:40,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:40,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2022-01-10 18:41:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:40,393 INFO L225 Difference]: With dead ends: 247221 [2022-01-10 18:41:40,394 INFO L226 Difference]: Without dead ends: 174027 [2022-01-10 18:41:40,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:40,464 INFO L933 BasicCegarLoop]: 1516 mSDtfsCounter, 279 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2753 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 [2022-01-10 18:41:40,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2753 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:41:40,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174027 states. [2022-01-10 18:41:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174027 to 174025. [2022-01-10 18:41:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174025 states, 174024 states have (on average 1.6851411299590862) internal successors, (293255), 174024 states have internal predecessors, (293255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174025 states to 174025 states and 293255 transitions. [2022-01-10 18:41:46,154 INFO L78 Accepts]: Start accepts. Automaton has 174025 states and 293255 transitions. Word has length 236 [2022-01-10 18:41:46,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:41:46,155 INFO L470 AbstractCegarLoop]: Abstraction has 174025 states and 293255 transitions. [2022-01-10 18:41:46,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:46,155 INFO L276 IsEmpty]: Start isEmpty. Operand 174025 states and 293255 transitions. [2022-01-10 18:41:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-01-10 18:41:46,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:41:46,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:41:46,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:41:46,216 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:41:46,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:41:46,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1887503932, now seen corresponding path program 1 times [2022-01-10 18:41:46,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:41:46,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24659874] [2022-01-10 18:41:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:41:46,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:41:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:41:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:41:46,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:41:46,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24659874] [2022-01-10 18:41:46,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24659874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:41:46,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:41:46,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:41:46,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259652845] [2022-01-10 18:41:46,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:41:46,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:41:46,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:41:46,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:41:46,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:46,361 INFO L87 Difference]: Start difference. First operand 174025 states and 293255 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:41:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:41:54,590 INFO L93 Difference]: Finished difference Result 513717 states and 865176 transitions. [2022-01-10 18:41:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:41:54,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2022-01-10 18:41:54,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:41:55,623 INFO L225 Difference]: With dead ends: 513717 [2022-01-10 18:41:55,623 INFO L226 Difference]: Without dead ends: 344103 [2022-01-10 18:41:55,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:41:55,784 INFO L933 BasicCegarLoop]: 2464 mSDtfsCounter, 1012 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 3719 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:41:55,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 3719 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]