/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/product-lines/email_spec7_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:09:29,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:09:29,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:09:29,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:09:29,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:09:29,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:09:29,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:09:29,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:09:29,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:09:29,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:09:29,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:09:29,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:09:29,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:09:29,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:09:29,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:09:29,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:09:29,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:09:29,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:09:29,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:09:29,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:09:29,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:09:29,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:09:29,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:09:29,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:09:29,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:09:29,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:09:29,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:09:29,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:09:29,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:09:29,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:09:29,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:09:29,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:09:29,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:09:29,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:09:29,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:09:29,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:09:29,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:09:29,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:09:29,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:09:29,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:09:29,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:09:29,946 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 18:09:29,968 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:09:29,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:09:29,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:09:29,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:09:29,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:09:29,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:09:29,970 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:09:29,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:09:29,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:09:29,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:09:29,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:09:29,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:09:29,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:09:29,970 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:09:29,970 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:09:29,970 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:09:29,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:09:29,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:09:29,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:09:29,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:09:29,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:09:29,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:09:29,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:09:29,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:09:29,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:09:29,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:09:29,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:09:29,971 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:09:29,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:09:29,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:09:29,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:09:29,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:09:29,972 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:09:29,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:09:30,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:09:30,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:09:30,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:09:30,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:09:30,186 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:09:30,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product28.cil.c [2022-01-10 18:09:30,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/303347558/d9eb5a6246dc4293abab8ee93a02fa5f/FLAGae60cc23f [2022-01-10 18:09:30,726 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:09:30,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product28.cil.c [2022-01-10 18:09:30,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/303347558/d9eb5a6246dc4293abab8ee93a02fa5f/FLAGae60cc23f [2022-01-10 18:09:30,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/303347558/d9eb5a6246dc4293abab8ee93a02fa5f [2022-01-10 18:09:30,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:09:30,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:09:30,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:09:30,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:09:30,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:09:30,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:09:30" (1/1) ... [2022-01-10 18:09:30,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee32997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:30, skipping insertion in model container [2022-01-10 18:09:30,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:09:30" (1/1) ... [2022-01-10 18:09:30,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:09:30,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:09:30,971 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product28.cil.c[1542,1555] [2022-01-10 18:09:31,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:09:31,291 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:09:31,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:09:31,310 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product28.cil.c[1542,1555] [2022-01-10 18:09:31,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:09:31,389 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:09:31,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product28.cil.c[1542,1555] [2022-01-10 18:09:31,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:09:31,469 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:09:31,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:31 WrapperNode [2022-01-10 18:09:31,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:09:31,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:09:31,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:09:31,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:09:31,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:31" (1/1) ... [2022-01-10 18:09:31,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:31" (1/1) ... [2022-01-10 18:09:31,588 INFO L137 Inliner]: procedures = 130, calls = 205, calls flagged for inlining = 120, calls inlined = 147, statements flattened = 2211 [2022-01-10 18:09:31,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:09:31,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:09:31,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:09:31,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:09:31,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:31" (1/1) ... [2022-01-10 18:09:31,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:31" (1/1) ... [2022-01-10 18:09:31,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:31" (1/1) ... [2022-01-10 18:09:31,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:31" (1/1) ... [2022-01-10 18:09:31,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:31" (1/1) ... [2022-01-10 18:09:31,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:31" (1/1) ... [2022-01-10 18:09:31,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:31" (1/1) ... [2022-01-10 18:09:31,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:09:31,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:09:31,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:09:31,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:09:31,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:31" (1/1) ... [2022-01-10 18:09:31,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:09:31,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:09:31,686 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 18:09:31,692 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 18:09:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:09:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:09:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:09:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:09:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:09:31,890 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:09:31,891 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:09:33,019 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:09:33,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:09:33,032 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:09:33,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:09:33 BoogieIcfgContainer [2022-01-10 18:09:33,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:09:33,035 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:09:33,035 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:09:33,036 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:09:33,038 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:09:33" (1/1) ... [2022-01-10 18:09:33,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:09:33 BasicIcfg [2022-01-10 18:09:33,275 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:09:33,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:09:33,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:09:33,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:09:33,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:09:30" (1/4) ... [2022-01-10 18:09:33,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d006ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:09:33, skipping insertion in model container [2022-01-10 18:09:33,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:09:31" (2/4) ... [2022-01-10 18:09:33,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d006ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:09:33, skipping insertion in model container [2022-01-10 18:09:33,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:09:33" (3/4) ... [2022-01-10 18:09:33,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d006ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:09:33, skipping insertion in model container [2022-01-10 18:09:33,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:09:33" (4/4) ... [2022-01-10 18:09:33,281 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product28.cil.cTransformedIcfg [2022-01-10 18:09:33,284 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:09:33,285 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 18:09:33,317 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:09:33,321 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 18:09:33,321 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 18:09:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 514 states have (on average 1.6945525291828794) internal successors, (871), 516 states have internal predecessors, (871), 0 states have call successors, (0), 0 states 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 18:09:33,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:09:33,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:33,346 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] [2022-01-10 18:09:33,346 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:33,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:33,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1172325908, now seen corresponding path program 1 times [2022-01-10 18:09:33,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:33,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657395414] [2022-01-10 18:09:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:33,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:33,631 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 18:09:33,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:33,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657395414] [2022-01-10 18:09:33,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657395414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:33,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:33,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:09:33,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834685887] [2022-01-10 18:09:33,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:33,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:09:33,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:33,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:09:33,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:09:33,660 INFO L87 Difference]: Start difference. First operand has 517 states, 514 states have (on average 1.6945525291828794) internal successors, (871), 516 states have internal predecessors, (871), 0 states have call successors, (0), 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 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 18:09:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:33,720 INFO L93 Difference]: Finished difference Result 778 states and 1290 transitions. [2022-01-10 18:09:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:09:33,722 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 18:09:33,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:33,731 INFO L225 Difference]: With dead ends: 778 [2022-01-10 18:09:33,732 INFO L226 Difference]: Without dead ends: 463 [2022-01-10 18:09:33,735 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 18:09:33,738 INFO L933 BasicCegarLoop]: 865 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, 865 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 18:09:33,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:09:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-10 18:09:33,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2022-01-10 18:09:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.702819956616052) internal successors, (785), 462 states have internal predecessors, (785), 0 states have call successors, (0), 0 states 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 18:09:33,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 785 transitions. [2022-01-10 18:09:33,797 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 785 transitions. Word has length 59 [2022-01-10 18:09:33,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:33,797 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 785 transitions. [2022-01-10 18:09:33,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 18:09:33,799 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 785 transitions. [2022-01-10 18:09:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:09:33,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:33,802 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] [2022-01-10 18:09:33,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:09:33,802 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:33,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1320092312, now seen corresponding path program 1 times [2022-01-10 18:09:33,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:33,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059478929] [2022-01-10 18:09:33,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:33,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:34,049 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 18:09:34,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:34,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059478929] [2022-01-10 18:09:34,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059478929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:34,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:34,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:09:34,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857777422] [2022-01-10 18:09:34,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:34,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:09:34,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:34,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:09:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:09:34,052 INFO L87 Difference]: Start difference. First operand 463 states and 785 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 18:09:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:34,121 INFO L93 Difference]: Finished difference Result 907 states and 1542 transitions. [2022-01-10 18:09:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:09:34,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-10 18:09:34,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:34,128 INFO L225 Difference]: With dead ends: 907 [2022-01-10 18:09:34,128 INFO L226 Difference]: Without dead ends: 463 [2022-01-10 18:09:34,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:09:34,134 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 760 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:34,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 780 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:09:34,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-10 18:09:34,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2022-01-10 18:09:34,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.6984815618221258) internal successors, (783), 462 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 18:09:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 783 transitions. [2022-01-10 18:09:34,173 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 783 transitions. Word has length 60 [2022-01-10 18:09:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:34,174 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 783 transitions. [2022-01-10 18:09:34,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 18:09:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 783 transitions. [2022-01-10 18:09:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:09:34,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:34,179 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] [2022-01-10 18:09:34,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:09:34,180 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:34,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2061744936, now seen corresponding path program 1 times [2022-01-10 18:09:34,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:34,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283735688] [2022-01-10 18:09:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:34,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:34,345 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 18:09:34,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:34,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283735688] [2022-01-10 18:09:34,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283735688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:34,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:34,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:09:34,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84816536] [2022-01-10 18:09:34,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:34,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:09:34,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:34,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:09:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:09:34,347 INFO L87 Difference]: Start difference. First operand 463 states and 783 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 18:09:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:34,516 INFO L93 Difference]: Finished difference Result 2183 states and 3711 transitions. [2022-01-10 18:09:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:09:34,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-10 18:09:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:34,523 INFO L225 Difference]: With dead ends: 2183 [2022-01-10 18:09:34,523 INFO L226 Difference]: Without dead ends: 1744 [2022-01-10 18:09:34,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:09:34,525 INFO L933 BasicCegarLoop]: 1489 mSDtfsCounter, 3698 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3698 SdHoareTripleChecker+Valid, 3710 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:34,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3698 Valid, 3710 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:09:34,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-01-10 18:09:34,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 463. [2022-01-10 18:09:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.6963123644251628) internal successors, (782), 462 states have internal predecessors, (782), 0 states have call successors, (0), 0 states 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 18:09:34,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 782 transitions. [2022-01-10 18:09:34,554 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 782 transitions. Word has length 62 [2022-01-10 18:09:34,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:34,554 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 782 transitions. [2022-01-10 18:09:34,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 18:09:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 782 transitions. [2022-01-10 18:09:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:09:34,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:34,555 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] [2022-01-10 18:09:34,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:09:34,556 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:34,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:34,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1945239442, now seen corresponding path program 1 times [2022-01-10 18:09:34,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:34,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53790266] [2022-01-10 18:09:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:34,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:34,628 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 18:09:34,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:34,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53790266] [2022-01-10 18:09:34,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53790266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:34,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:34,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:09:34,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385055895] [2022-01-10 18:09:34,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:34,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:09:34,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:09:34,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:09:34,630 INFO L87 Difference]: Start difference. First operand 463 states and 782 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:34,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:34,666 INFO L93 Difference]: Finished difference Result 911 states and 1542 transitions. [2022-01-10 18:09:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:09:34,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 18:09:34,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:34,669 INFO L225 Difference]: With dead ends: 911 [2022-01-10 18:09:34,669 INFO L226 Difference]: Without dead ends: 477 [2022-01-10 18:09:34,670 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 18:09:34,670 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 761 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:34,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 818 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:09:34,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-10 18:09:34,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 463. [2022-01-10 18:09:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.6941431670281997) internal successors, (781), 462 states have internal predecessors, (781), 0 states have call successors, (0), 0 states 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 18:09:34,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 781 transitions. [2022-01-10 18:09:34,695 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 781 transitions. Word has length 63 [2022-01-10 18:09:34,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:34,695 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 781 transitions. [2022-01-10 18:09:34,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:34,696 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 781 transitions. [2022-01-10 18:09:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:09:34,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:34,698 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] [2022-01-10 18:09:34,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:09:34,698 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:34,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash -706093993, now seen corresponding path program 1 times [2022-01-10 18:09:34,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:34,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901545178] [2022-01-10 18:09:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:34,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:34,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:34,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901545178] [2022-01-10 18:09:34,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901545178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:34,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:34,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:09:34,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401987742] [2022-01-10 18:09:34,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:34,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:09:34,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:34,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:09:34,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:09:34,858 INFO L87 Difference]: Start difference. First operand 463 states and 781 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 18:09:34,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:34,984 INFO L93 Difference]: Finished difference Result 1323 states and 2243 transitions. [2022-01-10 18:09:34,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:09:34,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 18:09:34,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:34,988 INFO L225 Difference]: With dead ends: 1323 [2022-01-10 18:09:34,988 INFO L226 Difference]: Without dead ends: 894 [2022-01-10 18:09:34,989 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 18:09:34,992 INFO L933 BasicCegarLoop]: 790 mSDtfsCounter, 3621 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3621 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:34,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3621 Valid, 1594 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:09:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-01-10 18:09:35,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 463. [2022-01-10 18:09:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.6898047722342733) internal successors, (779), 462 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 18:09:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 779 transitions. [2022-01-10 18:09:35,026 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 779 transitions. Word has length 64 [2022-01-10 18:09:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:35,028 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 779 transitions. [2022-01-10 18:09:35,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 18:09:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 779 transitions. [2022-01-10 18:09:35,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:09:35,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:35,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:35,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:09:35,030 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:35,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:35,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1250047590, now seen corresponding path program 1 times [2022-01-10 18:09:35,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:35,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921558467] [2022-01-10 18:09:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:35,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:35,142 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 18:09:35,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:35,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921558467] [2022-01-10 18:09:35,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921558467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:35,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:35,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:09:35,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386711127] [2022-01-10 18:09:35,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:35,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:09:35,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:35,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:09:35,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:09:35,144 INFO L87 Difference]: Start difference. First operand 463 states and 779 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:35,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:35,536 INFO L93 Difference]: Finished difference Result 2746 states and 4545 transitions. [2022-01-10 18:09:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:09:35,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 18:09:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:35,545 INFO L225 Difference]: With dead ends: 2746 [2022-01-10 18:09:35,546 INFO L226 Difference]: Without dead ends: 2556 [2022-01-10 18:09:35,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:09:35,547 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 4747 mSDsluCounter, 4465 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 5612 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:35,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4747 Valid, 5612 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:09:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2022-01-10 18:09:35,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 840. [2022-01-10 18:09:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.6933174224343674) internal successors, (1419), 839 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states 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 18:09:35,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1419 transitions. [2022-01-10 18:09:35,610 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1419 transitions. Word has length 66 [2022-01-10 18:09:35,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:35,610 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1419 transitions. [2022-01-10 18:09:35,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:09:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1419 transitions. [2022-01-10 18:09:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:09:35,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:35,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:09:35,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:09:35,612 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:35,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:35,612 INFO L85 PathProgramCache]: Analyzing trace with hash -574165154, now seen corresponding path program 1 times [2022-01-10 18:09:35,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:35,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416167958] [2022-01-10 18:09:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:35,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:35,717 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 18:09:35,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:35,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416167958] [2022-01-10 18:09:35,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416167958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:35,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:35,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:09:35,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297928237] [2022-01-10 18:09:35,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:35,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:09:35,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:35,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:09:35,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:09:35,719 INFO L87 Difference]: Start difference. First operand 840 states and 1419 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 18:09:36,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:36,258 INFO L93 Difference]: Finished difference Result 4824 states and 8027 transitions. [2022-01-10 18:09:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:09:36,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 18:09:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:36,274 INFO L225 Difference]: With dead ends: 4824 [2022-01-10 18:09:36,275 INFO L226 Difference]: Without dead ends: 4518 [2022-01-10 18:09:36,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:09:36,279 INFO L933 BasicCegarLoop]: 1398 mSDtfsCounter, 4095 mSDsluCounter, 3953 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 5351 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:36,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4095 Valid, 5351 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:09:36,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-01-10 18:09:36,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 1571. [2022-01-10 18:09:36,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1569 states have (on average 1.7010834926704907) internal successors, (2669), 1570 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states 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 18:09:36,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2669 transitions. [2022-01-10 18:09:36,385 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2669 transitions. Word has length 67 [2022-01-10 18:09:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:36,385 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 2669 transitions. [2022-01-10 18:09:36,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 18:09:36,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2669 transitions. [2022-01-10 18:09:36,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:09:36,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:36,388 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] [2022-01-10 18:09:36,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:09:36,388 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:36,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:36,389 INFO L85 PathProgramCache]: Analyzing trace with hash 624498804, now seen corresponding path program 1 times [2022-01-10 18:09:36,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:36,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913647893] [2022-01-10 18:09:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:36,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:36,477 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 18:09:36,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:36,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913647893] [2022-01-10 18:09:36,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913647893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:36,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:36,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:09:36,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262818080] [2022-01-10 18:09:36,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:36,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:09:36,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:36,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:09:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:09:36,479 INFO L87 Difference]: Start difference. First operand 1571 states and 2669 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 18:09:36,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:36,689 INFO L93 Difference]: Finished difference Result 4525 states and 7747 transitions. [2022-01-10 18:09:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:09:36,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 18:09:36,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:36,699 INFO L225 Difference]: With dead ends: 4525 [2022-01-10 18:09:36,699 INFO L226 Difference]: Without dead ends: 3004 [2022-01-10 18:09:36,701 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 18:09:36,702 INFO L933 BasicCegarLoop]: 1461 mSDtfsCounter, 2274 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:36,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2274 Valid, 2193 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:09:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2022-01-10 18:09:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 1571. [2022-01-10 18:09:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1569 states have (on average 1.6998087954110899) internal successors, (2667), 1570 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states 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 18:09:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2667 transitions. [2022-01-10 18:09:36,804 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2667 transitions. Word has length 67 [2022-01-10 18:09:36,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:36,804 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 2667 transitions. [2022-01-10 18:09:36,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 18:09:36,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2667 transitions. [2022-01-10 18:09:36,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:09:36,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:36,807 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] [2022-01-10 18:09:36,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:09:36,807 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:36,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1404276266, now seen corresponding path program 1 times [2022-01-10 18:09:36,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:36,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457794396] [2022-01-10 18:09:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:36,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:36,908 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 18:09:36,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:36,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457794396] [2022-01-10 18:09:36,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457794396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:36,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:36,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:09:36,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312386862] [2022-01-10 18:09:36,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:36,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:09:36,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:36,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:09:36,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:09:36,910 INFO L87 Difference]: Start difference. First operand 1571 states and 2667 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 18:09:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:37,519 INFO L93 Difference]: Finished difference Result 8925 states and 14931 transitions. [2022-01-10 18:09:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:09:37,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 18:09:37,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:37,543 INFO L225 Difference]: With dead ends: 8925 [2022-01-10 18:09:37,543 INFO L226 Difference]: Without dead ends: 8390 [2022-01-10 18:09:37,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:09:37,547 INFO L933 BasicCegarLoop]: 1404 mSDtfsCounter, 4033 mSDsluCounter, 3991 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4033 SdHoareTripleChecker+Valid, 5395 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:37,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4033 Valid, 5395 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:09:37,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8390 states. [2022-01-10 18:09:37,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8390 to 2994. [2022-01-10 18:09:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2992 states have (on average 1.7115641711229947) internal successors, (5121), 2993 states have internal predecessors, (5121), 0 states have call successors, (0), 0 states 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 18:09:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 5121 transitions. [2022-01-10 18:09:37,817 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 5121 transitions. Word has length 68 [2022-01-10 18:09:37,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:37,817 INFO L470 AbstractCegarLoop]: Abstraction has 2994 states and 5121 transitions. [2022-01-10 18:09:37,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 18:09:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 5121 transitions. [2022-01-10 18:09:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:09:37,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:37,822 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] [2022-01-10 18:09:37,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:09:37,822 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:37,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1929077013, now seen corresponding path program 1 times [2022-01-10 18:09:37,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:37,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712511822] [2022-01-10 18:09:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:37,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:37,928 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 18:09:37,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:37,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712511822] [2022-01-10 18:09:37,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712511822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:37,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:37,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:09:37,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481083335] [2022-01-10 18:09:37,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:37,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:09:37,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:37,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:09:37,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:09:37,929 INFO L87 Difference]: Start difference. First operand 2994 states and 5121 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 18:09:38,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:38,792 INFO L93 Difference]: Finished difference Result 9960 states and 16523 transitions. [2022-01-10 18:09:38,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 18:09:38,793 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 18:09:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:38,816 INFO L225 Difference]: With dead ends: 9960 [2022-01-10 18:09:38,816 INFO L226 Difference]: Without dead ends: 9070 [2022-01-10 18:09:38,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-10 18:09:38,820 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 5606 mSDsluCounter, 5484 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5606 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:38,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5606 Valid, 6441 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:09:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9070 states. [2022-01-10 18:09:39,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9070 to 5845. [2022-01-10 18:09:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 5843 states have (on average 1.7184665411603628) internal successors, (10041), 5844 states have internal predecessors, (10041), 0 states have call successors, (0), 0 states 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 18:09:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 10041 transitions. [2022-01-10 18:09:39,214 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 10041 transitions. Word has length 68 [2022-01-10 18:09:39,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:39,214 INFO L470 AbstractCegarLoop]: Abstraction has 5845 states and 10041 transitions. [2022-01-10 18:09:39,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 18:09:39,214 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 10041 transitions. [2022-01-10 18:09:39,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:09:39,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:39,222 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] [2022-01-10 18:09:39,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:09:39,223 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash -936230083, now seen corresponding path program 1 times [2022-01-10 18:09:39,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:39,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227024079] [2022-01-10 18:09:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:39,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:09:39,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:39,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227024079] [2022-01-10 18:09:39,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227024079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:39,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:39,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:09:39,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171205748] [2022-01-10 18:09:39,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:39,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:09:39,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:39,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:09:39,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:09:39,373 INFO L87 Difference]: Start difference. First operand 5845 states and 10041 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 18:09:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:40,946 INFO L93 Difference]: Finished difference Result 18400 states and 30628 transitions. [2022-01-10 18:09:40,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 18:09:40,947 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 18:09:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:40,983 INFO L225 Difference]: With dead ends: 18400 [2022-01-10 18:09:40,983 INFO L226 Difference]: Without dead ends: 16681 [2022-01-10 18:09:40,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-10 18:09:40,990 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 5595 mSDsluCounter, 4774 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5595 SdHoareTripleChecker+Valid, 5591 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:40,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5595 Valid, 5591 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:09:41,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16681 states. [2022-01-10 18:09:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16681 to 11564. [2022-01-10 18:09:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11564 states, 11562 states have (on average 1.7217609410136654) internal successors, (19907), 11563 states have internal predecessors, (19907), 0 states have call successors, (0), 0 states 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 18:09:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11564 states to 11564 states and 19907 transitions. [2022-01-10 18:09:41,936 INFO L78 Accepts]: Start accepts. Automaton has 11564 states and 19907 transitions. Word has length 69 [2022-01-10 18:09:41,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:41,936 INFO L470 AbstractCegarLoop]: Abstraction has 11564 states and 19907 transitions. [2022-01-10 18:09:41,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 18:09:41,937 INFO L276 IsEmpty]: Start isEmpty. Operand 11564 states and 19907 transitions. [2022-01-10 18:09:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:09:41,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:41,950 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] [2022-01-10 18:09:41,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:09:41,951 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1345054308, now seen corresponding path program 1 times [2022-01-10 18:09:41,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:41,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986031680] [2022-01-10 18:09:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:41,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:42,062 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 18:09:42,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:42,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986031680] [2022-01-10 18:09:42,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986031680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:42,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:42,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:09:42,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057221212] [2022-01-10 18:09:42,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:42,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:09:42,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:42,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:09:42,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:09:42,064 INFO L87 Difference]: Start difference. First operand 11564 states and 19907 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 18:09:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:44,094 INFO L93 Difference]: Finished difference Result 28370 states and 48181 transitions. [2022-01-10 18:09:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:09:44,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 18:09:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:44,149 INFO L225 Difference]: With dead ends: 28370 [2022-01-10 18:09:44,149 INFO L226 Difference]: Without dead ends: 27264 [2022-01-10 18:09:44,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:09:44,158 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 3928 mSDsluCounter, 4654 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:44,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3928 Valid, 5965 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:09:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27264 states. [2022-01-10 18:09:45,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27264 to 11711. [2022-01-10 18:09:45,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11711 states, 11709 states have (on average 1.7191049619950465) internal successors, (20129), 11710 states have internal predecessors, (20129), 0 states have call successors, (0), 0 states 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 18:09:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11711 states to 11711 states and 20129 transitions. [2022-01-10 18:09:45,265 INFO L78 Accepts]: Start accepts. Automaton has 11711 states and 20129 transitions. Word has length 69 [2022-01-10 18:09:45,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:45,266 INFO L470 AbstractCegarLoop]: Abstraction has 11711 states and 20129 transitions. [2022-01-10 18:09:45,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 18:09:45,266 INFO L276 IsEmpty]: Start isEmpty. Operand 11711 states and 20129 transitions. [2022-01-10 18:09:45,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:09:45,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:45,279 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] [2022-01-10 18:09:45,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:09:45,279 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1073336823, now seen corresponding path program 1 times [2022-01-10 18:09:45,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:45,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880716459] [2022-01-10 18:09:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:45,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:45,402 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 18:09:45,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:45,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880716459] [2022-01-10 18:09:45,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880716459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:45,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:45,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:09:45,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023003075] [2022-01-10 18:09:45,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:45,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:09:45,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:45,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:09:45,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:09:45,404 INFO L87 Difference]: Start difference. First operand 11711 states and 20129 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 18:09:47,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:47,073 INFO L93 Difference]: Finished difference Result 19296 states and 32174 transitions. [2022-01-10 18:09:47,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 18:09:47,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 18:09:47,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:47,111 INFO L225 Difference]: With dead ends: 19296 [2022-01-10 18:09:47,111 INFO L226 Difference]: Without dead ends: 16507 [2022-01-10 18:09:47,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:09:47,122 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 2819 mSDsluCounter, 3609 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2819 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:47,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2819 Valid, 4608 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:09:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16507 states. [2022-01-10 18:09:48,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16507 to 12907. [2022-01-10 18:09:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12907 states, 12905 states have (on average 1.70592793490895) internal successors, (22015), 12906 states have internal predecessors, (22015), 0 states have call successors, (0), 0 states 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 18:09:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12907 states to 12907 states and 22015 transitions. [2022-01-10 18:09:48,143 INFO L78 Accepts]: Start accepts. Automaton has 12907 states and 22015 transitions. Word has length 69 [2022-01-10 18:09:48,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:48,144 INFO L470 AbstractCegarLoop]: Abstraction has 12907 states and 22015 transitions. [2022-01-10 18:09:48,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 18:09:48,144 INFO L276 IsEmpty]: Start isEmpty. Operand 12907 states and 22015 transitions. [2022-01-10 18:09:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:09:48,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:48,156 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] [2022-01-10 18:09:48,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:09:48,156 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:48,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:48,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1218193357, now seen corresponding path program 1 times [2022-01-10 18:09:48,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:48,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830961117] [2022-01-10 18:09:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:48,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:48,208 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 18:09:48,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:48,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830961117] [2022-01-10 18:09:48,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830961117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:48,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:48,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:09:48,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473274027] [2022-01-10 18:09:48,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:48,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:09:48,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:09:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:09:48,209 INFO L87 Difference]: Start difference. First operand 12907 states and 22015 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 18:09:49,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:49,160 INFO L93 Difference]: Finished difference Result 14078 states and 23896 transitions. [2022-01-10 18:09:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:09:49,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 18:09:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:49,183 INFO L225 Difference]: With dead ends: 14078 [2022-01-10 18:09:49,183 INFO L226 Difference]: Without dead ends: 12907 [2022-01-10 18:09:49,188 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 18:09:49,189 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 665 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:49,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1654 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:09:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12907 states. [2022-01-10 18:09:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12907 to 12907. [2022-01-10 18:09:50,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12907 states, 12905 states have (on average 1.7053080201472297) internal successors, (22007), 12906 states have internal predecessors, (22007), 0 states have call successors, (0), 0 states 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 18:09:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12907 states to 12907 states and 22007 transitions. [2022-01-10 18:09:50,313 INFO L78 Accepts]: Start accepts. Automaton has 12907 states and 22007 transitions. Word has length 69 [2022-01-10 18:09:50,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:50,313 INFO L470 AbstractCegarLoop]: Abstraction has 12907 states and 22007 transitions. [2022-01-10 18:09:50,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 18:09:50,313 INFO L276 IsEmpty]: Start isEmpty. Operand 12907 states and 22007 transitions. [2022-01-10 18:09:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:09:50,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:50,326 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] [2022-01-10 18:09:50,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:09:50,326 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:50,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:50,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1229509484, now seen corresponding path program 1 times [2022-01-10 18:09:50,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:50,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655051331] [2022-01-10 18:09:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:50,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:50,409 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 18:09:50,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:50,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655051331] [2022-01-10 18:09:50,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655051331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:50,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:50,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:09:50,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828146568] [2022-01-10 18:09:50,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:50,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:09:50,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:50,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:09:50,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:09:50,411 INFO L87 Difference]: Start difference. First operand 12907 states and 22007 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 18:09:52,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:52,066 INFO L93 Difference]: Finished difference Result 21211 states and 35185 transitions. [2022-01-10 18:09:52,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:09:52,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 18:09:52,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:52,092 INFO L225 Difference]: With dead ends: 21211 [2022-01-10 18:09:52,093 INFO L226 Difference]: Without dead ends: 17656 [2022-01-10 18:09:52,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:09:52,100 INFO L933 BasicCegarLoop]: 1237 mSDtfsCounter, 1666 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 3872 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:52,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1666 Valid, 3872 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:09:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17656 states. [2022-01-10 18:09:53,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17656 to 13071. [2022-01-10 18:09:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13071 states, 13069 states have (on average 1.6964572652842604) internal successors, (22171), 13070 states have internal predecessors, (22171), 0 states have call successors, (0), 0 states 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 18:09:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13071 states to 13071 states and 22171 transitions. [2022-01-10 18:09:53,207 INFO L78 Accepts]: Start accepts. Automaton has 13071 states and 22171 transitions. Word has length 69 [2022-01-10 18:09:53,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:53,207 INFO L470 AbstractCegarLoop]: Abstraction has 13071 states and 22171 transitions. [2022-01-10 18:09:53,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 18:09:53,207 INFO L276 IsEmpty]: Start isEmpty. Operand 13071 states and 22171 transitions. [2022-01-10 18:09:53,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:09:53,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:53,219 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] [2022-01-10 18:09:53,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:09:53,219 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:53,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:53,219 INFO L85 PathProgramCache]: Analyzing trace with hash -342357696, now seen corresponding path program 1 times [2022-01-10 18:09:53,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:53,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028905650] [2022-01-10 18:09:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:53,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:53,321 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 18:09:53,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:53,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028905650] [2022-01-10 18:09:53,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028905650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:53,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:53,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:09:53,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550160561] [2022-01-10 18:09:53,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:53,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:09:53,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:53,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:09:53,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:09:53,324 INFO L87 Difference]: Start difference. First operand 13071 states and 22171 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:09:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:09:56,390 INFO L93 Difference]: Finished difference Result 34187 states and 57159 transitions. [2022-01-10 18:09:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:09:56,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 18:09:56,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:09:56,442 INFO L225 Difference]: With dead ends: 34187 [2022-01-10 18:09:56,442 INFO L226 Difference]: Without dead ends: 32648 [2022-01-10 18:09:56,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:09:56,452 INFO L933 BasicCegarLoop]: 1270 mSDtfsCounter, 3883 mSDsluCounter, 3789 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3883 SdHoareTripleChecker+Valid, 5059 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:09:56,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3883 Valid, 5059 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:09:56,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32648 states. [2022-01-10 18:09:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32648 to 13372. [2022-01-10 18:09:57,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13372 states, 13370 states have (on average 1.694016454749439) internal successors, (22649), 13371 states have internal predecessors, (22649), 0 states have call successors, (0), 0 states 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 18:09:57,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13372 states to 13372 states and 22649 transitions. [2022-01-10 18:09:57,656 INFO L78 Accepts]: Start accepts. Automaton has 13372 states and 22649 transitions. Word has length 70 [2022-01-10 18:09:57,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:09:57,656 INFO L470 AbstractCegarLoop]: Abstraction has 13372 states and 22649 transitions. [2022-01-10 18:09:57,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:09:57,657 INFO L276 IsEmpty]: Start isEmpty. Operand 13372 states and 22649 transitions. [2022-01-10 18:09:57,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:09:57,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:09:57,670 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] [2022-01-10 18:09:57,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:09:57,671 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:09:57,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:09:57,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1882720186, now seen corresponding path program 1 times [2022-01-10 18:09:57,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:09:57,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197778859] [2022-01-10 18:09:57,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:09:57,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:09:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:09:57,762 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 18:09:57,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:09:57,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197778859] [2022-01-10 18:09:57,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197778859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:09:57,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:09:57,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:09:57,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94086809] [2022-01-10 18:09:57,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:09:57,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:09:57,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:09:57,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:09:57,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:09:57,764 INFO L87 Difference]: Start difference. First operand 13372 states and 22649 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:10:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:10:00,232 INFO L93 Difference]: Finished difference Result 39600 states and 67107 transitions. [2022-01-10 18:10:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:10:00,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 18:10:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:10:00,283 INFO L225 Difference]: With dead ends: 39600 [2022-01-10 18:10:00,283 INFO L226 Difference]: Without dead ends: 26294 [2022-01-10 18:10:00,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:10:00,299 INFO L933 BasicCegarLoop]: 1464 mSDtfsCounter, 2256 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:10:00,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2256 Valid, 2222 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:10:00,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26294 states. [2022-01-10 18:10:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26294 to 13372. [2022-01-10 18:10:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13372 states, 13370 states have (on average 1.693866866118175) internal successors, (22647), 13371 states have internal predecessors, (22647), 0 states have call successors, (0), 0 states 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 18:10:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13372 states to 13372 states and 22647 transitions. [2022-01-10 18:10:01,653 INFO L78 Accepts]: Start accepts. Automaton has 13372 states and 22647 transitions. Word has length 70 [2022-01-10 18:10:01,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:10:01,654 INFO L470 AbstractCegarLoop]: Abstraction has 13372 states and 22647 transitions. [2022-01-10 18:10:01,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:10:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 13372 states and 22647 transitions. [2022-01-10 18:10:01,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:10:01,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:10:01,666 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] [2022-01-10 18:10:01,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:10:01,667 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:10:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:10:01,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1643077095, now seen corresponding path program 1 times [2022-01-10 18:10:01,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:10:01,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959355564] [2022-01-10 18:10:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:10:01,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:10:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:10:01,765 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 18:10:01,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:10:01,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959355564] [2022-01-10 18:10:01,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959355564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:10:01,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:10:01,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:10:01,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715174668] [2022-01-10 18:10:01,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:10:01,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:10:01,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:10:01,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:10:01,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:10:01,766 INFO L87 Difference]: Start difference. First operand 13372 states and 22647 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:10:03,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:10:03,677 INFO L93 Difference]: Finished difference Result 22882 states and 37600 transitions. [2022-01-10 18:10:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:10:03,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 18:10:03,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:10:03,705 INFO L225 Difference]: With dead ends: 22882 [2022-01-10 18:10:03,705 INFO L226 Difference]: Without dead ends: 16950 [2022-01-10 18:10:03,715 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 18:10:03,716 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 1781 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:10:03,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1781 Valid, 1897 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:10:03,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16950 states. [2022-01-10 18:10:04,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16950 to 13342. [2022-01-10 18:10:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13342 states, 13340 states have (on average 1.6894302848575713) internal successors, (22537), 13341 states have internal predecessors, (22537), 0 states have call successors, (0), 0 states 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 18:10:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13342 states to 13342 states and 22537 transitions. [2022-01-10 18:10:05,039 INFO L78 Accepts]: Start accepts. Automaton has 13342 states and 22537 transitions. Word has length 70 [2022-01-10 18:10:05,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:10:05,039 INFO L470 AbstractCegarLoop]: Abstraction has 13342 states and 22537 transitions. [2022-01-10 18:10:05,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:10:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 13342 states and 22537 transitions. [2022-01-10 18:10:05,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:10:05,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:10:05,050 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] [2022-01-10 18:10:05,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:10:05,050 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:10:05,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:10:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1425709168, now seen corresponding path program 1 times [2022-01-10 18:10:05,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:10:05,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912834923] [2022-01-10 18:10:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:10:05,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:10:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:10:05,134 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 18:10:05,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:10:05,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912834923] [2022-01-10 18:10:05,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912834923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:10:05,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:10:05,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:10:05,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626900289] [2022-01-10 18:10:05,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:10:05,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:10:05,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:10:05,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:10:05,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:10:05,136 INFO L87 Difference]: Start difference. First operand 13342 states and 22537 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:10:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:10:06,686 INFO L93 Difference]: Finished difference Result 18828 states and 31266 transitions. [2022-01-10 18:10:06,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:10:06,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 18:10:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:10:06,707 INFO L225 Difference]: With dead ends: 18828 [2022-01-10 18:10:06,707 INFO L226 Difference]: Without dead ends: 13464 [2022-01-10 18:10:06,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-01-10 18:10:06,716 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 1649 mSDsluCounter, 3264 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 4063 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:10:06,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1649 Valid, 4063 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:10:06,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13464 states. [2022-01-10 18:10:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13464 to 13218. [2022-01-10 18:10:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13218 states, 13216 states have (on average 1.6856083535108959) internal successors, (22277), 13217 states have internal predecessors, (22277), 0 states have call successors, (0), 0 states 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 18:10:08,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13218 states to 13218 states and 22277 transitions. [2022-01-10 18:10:08,009 INFO L78 Accepts]: Start accepts. Automaton has 13218 states and 22277 transitions. Word has length 70 [2022-01-10 18:10:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:10:08,010 INFO L470 AbstractCegarLoop]: Abstraction has 13218 states and 22277 transitions. [2022-01-10 18:10:08,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:10:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 13218 states and 22277 transitions. [2022-01-10 18:10:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:10:08,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:10:08,020 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] [2022-01-10 18:10:08,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:10:08,020 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:10:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:10:08,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1092155341, now seen corresponding path program 1 times [2022-01-10 18:10:08,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:10:08,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001375640] [2022-01-10 18:10:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:10:08,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:10:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:10:08,105 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 18:10:08,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:10:08,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001375640] [2022-01-10 18:10:08,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001375640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:10:08,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:10:08,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:10:08,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619944207] [2022-01-10 18:10:08,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:10:08,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:10:08,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:10:08,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:10:08,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:10:08,106 INFO L87 Difference]: Start difference. First operand 13218 states and 22277 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 18:10:09,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:10:09,559 INFO L93 Difference]: Finished difference Result 16452 states and 27374 transitions. [2022-01-10 18:10:09,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 18:10:09,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 18:10:09,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:10:09,582 INFO L225 Difference]: With dead ends: 16452 [2022-01-10 18:10:09,582 INFO L226 Difference]: Without dead ends: 13460 [2022-01-10 18:10:09,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:10:09,590 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 2780 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:10:09,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 2839 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:10:09,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13460 states. [2022-01-10 18:10:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13460 to 13188. [2022-01-10 18:10:10,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.684893068405885) internal successors, (22217), 13187 states have internal predecessors, (22217), 0 states have call successors, (0), 0 states 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 18:10:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 22217 transitions. [2022-01-10 18:10:10,943 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 22217 transitions. Word has length 71 [2022-01-10 18:10:10,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:10:10,944 INFO L470 AbstractCegarLoop]: Abstraction has 13188 states and 22217 transitions. [2022-01-10 18:10:10,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 18:10:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 22217 transitions. [2022-01-10 18:10:10,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:10:10,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:10:10,953 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] [2022-01-10 18:10:10,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:10:10,953 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:10:10,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:10:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1288668846, now seen corresponding path program 1 times [2022-01-10 18:10:10,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:10:10,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241825279] [2022-01-10 18:10:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:10:10,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:10:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:10:11,028 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 18:10:11,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:10:11,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241825279] [2022-01-10 18:10:11,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241825279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:10:11,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:10:11,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:10:11,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943152260] [2022-01-10 18:10:11,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:10:11,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:10:11,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:10:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:10:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:10:11,030 INFO L87 Difference]: Start difference. First operand 13188 states and 22217 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 18:10:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:10:15,738 INFO L93 Difference]: Finished difference Result 32702 states and 52315 transitions. [2022-01-10 18:10:15,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:10:15,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 18:10:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:10:15,791 INFO L225 Difference]: With dead ends: 32702 [2022-01-10 18:10:15,791 INFO L226 Difference]: Without dead ends: 29900 [2022-01-10 18:10:15,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:10:15,803 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 1974 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:10:15,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1974 Valid, 3100 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:10:15,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29900 states. [2022-01-10 18:10:18,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29900 to 18030. [2022-01-10 18:10:18,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18030 states, 18028 states have (on average 1.63645440426004) internal successors, (29502), 18029 states have internal predecessors, (29502), 0 states have call successors, (0), 0 states 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 18:10:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18030 states to 18030 states and 29502 transitions. [2022-01-10 18:10:18,317 INFO L78 Accepts]: Start accepts. Automaton has 18030 states and 29502 transitions. Word has length 71 [2022-01-10 18:10:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:10:18,317 INFO L470 AbstractCegarLoop]: Abstraction has 18030 states and 29502 transitions. [2022-01-10 18:10:18,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 18:10:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 18030 states and 29502 transitions. [2022-01-10 18:10:18,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:10:18,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:10:18,327 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] [2022-01-10 18:10:18,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:10:18,327 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:10:18,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:10:18,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1293077428, now seen corresponding path program 1 times [2022-01-10 18:10:18,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:10:18,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462987695] [2022-01-10 18:10:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:10:18,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:10:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:10:18,411 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 18:10:18,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:10:18,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462987695] [2022-01-10 18:10:18,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462987695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:10:18,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:10:18,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:10:18,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082086222] [2022-01-10 18:10:18,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:10:18,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:10:18,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:10:18,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:10:18,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:10:18,413 INFO L87 Difference]: Start difference. First operand 18030 states and 29502 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 18:10:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:10:22,903 INFO L93 Difference]: Finished difference Result 28651 states and 45924 transitions. [2022-01-10 18:10:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:10:22,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 18:10:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:10:22,948 INFO L225 Difference]: With dead ends: 28651 [2022-01-10 18:10:22,948 INFO L226 Difference]: Without dead ends: 28640 [2022-01-10 18:10:22,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:10:22,958 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 1125 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:10:22,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2853 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:10:22,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28640 states. [2022-01-10 18:10:25,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28640 to 18187. [2022-01-10 18:10:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18187 states, 18185 states have (on average 1.6307946109430849) internal successors, (29656), 18186 states have internal predecessors, (29656), 0 states have call successors, (0), 0 states 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 18:10:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18187 states to 18187 states and 29656 transitions. [2022-01-10 18:10:25,493 INFO L78 Accepts]: Start accepts. Automaton has 18187 states and 29656 transitions. Word has length 72 [2022-01-10 18:10:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:10:25,493 INFO L470 AbstractCegarLoop]: Abstraction has 18187 states and 29656 transitions. [2022-01-10 18:10:25,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 18:10:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 18187 states and 29656 transitions. [2022-01-10 18:10:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:10:25,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:10:25,502 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] [2022-01-10 18:10:25,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:10:25,503 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:10:25,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:10:25,503 INFO L85 PathProgramCache]: Analyzing trace with hash -382664468, now seen corresponding path program 1 times [2022-01-10 18:10:25,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:10:25,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881232912] [2022-01-10 18:10:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:10:25,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:10:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:10:25,594 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 18:10:25,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:10:25,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881232912] [2022-01-10 18:10:25,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881232912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:10:25,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:10:25,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 18:10:25,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764916219] [2022-01-10 18:10:25,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:10:25,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:10:25,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:10:25,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:10:25,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:10:25,597 INFO L87 Difference]: Start difference. First operand 18187 states and 29656 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 18:10:29,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:10:29,372 INFO L93 Difference]: Finished difference Result 31044 states and 49307 transitions. [2022-01-10 18:10:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 18:10:29,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 18:10:29,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:10:29,400 INFO L225 Difference]: With dead ends: 31044 [2022-01-10 18:10:29,401 INFO L226 Difference]: Without dead ends: 23291 [2022-01-10 18:10:29,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-01-10 18:10:29,409 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 2746 mSDsluCounter, 4400 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2746 SdHoareTripleChecker+Valid, 5149 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:10:29,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2746 Valid, 5149 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:10:29,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23291 states. [2022-01-10 18:10:31,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23291 to 18027. [2022-01-10 18:10:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18027 states, 18025 states have (on average 1.6230790568654647) internal successors, (29256), 18026 states have internal predecessors, (29256), 0 states have call successors, (0), 0 states 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 18:10:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18027 states to 18027 states and 29256 transitions. [2022-01-10 18:10:31,898 INFO L78 Accepts]: Start accepts. Automaton has 18027 states and 29256 transitions. Word has length 72 [2022-01-10 18:10:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:10:31,898 INFO L470 AbstractCegarLoop]: Abstraction has 18027 states and 29256 transitions. [2022-01-10 18:10:31,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 18:10:31,898 INFO L276 IsEmpty]: Start isEmpty. Operand 18027 states and 29256 transitions. [2022-01-10 18:10:31,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:10:31,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:10:31,909 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] [2022-01-10 18:10:31,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:10:31,909 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:10:31,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:10:31,909 INFO L85 PathProgramCache]: Analyzing trace with hash 959583730, now seen corresponding path program 1 times [2022-01-10 18:10:31,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:10:31,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824047143] [2022-01-10 18:10:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:10:31,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:10:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:10:31,969 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 18:10:31,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:10:31,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824047143] [2022-01-10 18:10:31,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824047143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:10:31,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:10:31,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:10:31,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140133832] [2022-01-10 18:10:31,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:10:31,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:10:31,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:10:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:10:31,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:10:31,971 INFO L87 Difference]: Start difference. First operand 18027 states and 29256 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)