/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:56:45,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:56:45,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:56:46,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:56:46,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:56:46,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:56:46,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:56:46,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:56:46,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:56:46,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:56:46,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:56:46,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:56:46,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:56:46,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:56:46,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:56:46,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:56:46,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:56:46,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:56:46,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:56:46,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:56:46,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:56:46,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:56:46,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:56:46,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:56:46,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:56:46,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:56:46,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:56:46,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:56:46,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:56:46,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:56:46,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:56:46,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:56:46,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:56:46,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:56:46,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:56:46,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:56:46,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:56:46,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:56:46,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:56:46,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:56:46,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:56:46,042 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:56:46,068 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:56:46,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:56:46,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:56:46,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:56:46,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:56:46,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:56:46,071 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:56:46,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:56:46,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:56:46,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:56:46,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:56:46,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:56:46,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:56:46,072 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:56:46,072 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:56:46,072 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:56:46,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:56:46,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:56:46,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:56:46,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:56:46,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:56:46,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:56:46,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:56:46,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:56:46,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:56:46,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:56:46,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:56:46,074 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:56:46,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:56:46,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:56:46,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:56:46,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:56:46,075 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:56:46,075 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:56:46,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:56:46,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:56:46,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:56:46,291 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:56:46,292 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:56:46,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2022-01-10 23:56:46,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c550bde46/1073786db002401e8b76157e9f48dc49/FLAG9068530d4 [2022-01-10 23:56:46,830 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:56:46,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2022-01-10 23:56:46,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c550bde46/1073786db002401e8b76157e9f48dc49/FLAG9068530d4 [2022-01-10 23:56:46,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c550bde46/1073786db002401e8b76157e9f48dc49 [2022-01-10 23:56:46,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:56:46,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:56:46,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:56:46,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:56:46,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:56:46,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:56:46" (1/1) ... [2022-01-10 23:56:46,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6229c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:46, skipping insertion in model container [2022-01-10 23:56:46,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:56:46" (1/1) ... [2022-01-10 23:56:46,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:56:46,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:56:47,141 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_spec4_product28.cil.c[8467,8480] [2022-01-10 23:56:47,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:56:47,370 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:56:47,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:56:47,399 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_spec4_product28.cil.c[8467,8480] [2022-01-10 23:56:47,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:56:47,462 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:56:47,486 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_spec4_product28.cil.c[8467,8480] [2022-01-10 23:56:47,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:56:47,545 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:56:47,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:47 WrapperNode [2022-01-10 23:56:47,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:56:47,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:56:47,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:56:47,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:56:47,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:47" (1/1) ... [2022-01-10 23:56:47,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:47" (1/1) ... [2022-01-10 23:56:47,629 INFO L137 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 121, calls inlined = 145, statements flattened = 2223 [2022-01-10 23:56:47,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:56:47,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:56:47,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:56:47,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:56:47,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:47" (1/1) ... [2022-01-10 23:56:47,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:47" (1/1) ... [2022-01-10 23:56:47,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:47" (1/1) ... [2022-01-10 23:56:47,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:47" (1/1) ... [2022-01-10 23:56:47,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:47" (1/1) ... [2022-01-10 23:56:47,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:47" (1/1) ... [2022-01-10 23:56:47,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:47" (1/1) ... [2022-01-10 23:56:47,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:56:47,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:56:47,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:56:47,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:56:47,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:47" (1/1) ... [2022-01-10 23:56:47,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:56:47,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:56:47,760 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 23:56:47,762 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 23:56:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:56:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:56:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:56:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:56:47,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:56:47,972 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:56:47,973 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:56:48,948 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:56:48,965 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:56:48,965 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:56:48,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:56:48 BoogieIcfgContainer [2022-01-10 23:56:48,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:56:48,970 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:56:48,970 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:56:48,977 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:56:48,979 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:56:48" (1/1) ... [2022-01-10 23:56:49,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:56:49 BasicIcfg [2022-01-10 23:56:49,260 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:56:49,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:56:49,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:56:49,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:56:49,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:56:46" (1/4) ... [2022-01-10 23:56:49,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb50d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:56:49, skipping insertion in model container [2022-01-10 23:56:49,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:56:47" (2/4) ... [2022-01-10 23:56:49,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb50d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:56:49, skipping insertion in model container [2022-01-10 23:56:49,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:56:48" (3/4) ... [2022-01-10 23:56:49,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb50d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:56:49, skipping insertion in model container [2022-01-10 23:56:49,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:56:49" (4/4) ... [2022-01-10 23:56:49,266 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product28.cil.cTransformedIcfg [2022-01-10 23:56:49,270 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:56:49,270 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:56:49,317 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:56:49,321 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 23:56:49,321 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:56:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 521 states, 518 states have (on average 1.7007722007722008) internal successors, (881), 520 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 23:56:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 23:56:49,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:49,363 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] [2022-01-10 23:56:49,363 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:49,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:49,368 INFO L85 PathProgramCache]: Analyzing trace with hash 317327906, now seen corresponding path program 1 times [2022-01-10 23:56:49,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:49,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646458599] [2022-01-10 23:56:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:49,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:49,709 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 23:56:49,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:49,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646458599] [2022-01-10 23:56:49,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646458599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:49,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:49,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:56:49,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440028816] [2022-01-10 23:56:49,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:49,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:56:49,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:49,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:56:49,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:56:49,744 INFO L87 Difference]: Start difference. First operand has 521 states, 518 states have (on average 1.7007722007722008) internal successors, (881), 520 states have internal predecessors, (881), 0 states have call successors, (0), 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 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 23:56:49,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:49,793 INFO L93 Difference]: Finished difference Result 786 states and 1310 transitions. [2022-01-10 23:56:49,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:56:49,801 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 23:56:49,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:49,817 INFO L225 Difference]: With dead ends: 786 [2022-01-10 23:56:49,817 INFO L226 Difference]: Without dead ends: 441 [2022-01-10 23:56:49,822 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 23:56:49,825 INFO L933 BasicCegarLoop]: 875 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, 875 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 23:56:49,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:56:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-01-10 23:56:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-01-10 23:56:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.7084282460136675) internal successors, (750), 440 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 23:56:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 750 transitions. [2022-01-10 23:56:49,901 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 750 transitions. Word has length 54 [2022-01-10 23:56:49,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:49,901 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 750 transitions. [2022-01-10 23:56:49,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 23:56:49,902 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 750 transitions. [2022-01-10 23:56:49,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 23:56:49,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:49,907 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] [2022-01-10 23:56:49,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:56:49,907 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:49,909 INFO L85 PathProgramCache]: Analyzing trace with hash 90824250, now seen corresponding path program 1 times [2022-01-10 23:56:49,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:49,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126208539] [2022-01-10 23:56:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:49,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:50,144 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 23:56:50,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:50,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126208539] [2022-01-10 23:56:50,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126208539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:50,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:50,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:56:50,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68529352] [2022-01-10 23:56:50,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:50,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:56:50,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:50,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:56:50,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:56:50,147 INFO L87 Difference]: Start difference. First operand 441 states and 750 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 23:56:50,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:50,210 INFO L93 Difference]: Finished difference Result 863 states and 1472 transitions. [2022-01-10 23:56:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:56:50,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 23:56:50,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:50,213 INFO L225 Difference]: With dead ends: 863 [2022-01-10 23:56:50,213 INFO L226 Difference]: Without dead ends: 441 [2022-01-10 23:56:50,214 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 23:56:50,215 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 725 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 745 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 23:56:50,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 745 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:56:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-01-10 23:56:50,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-01-10 23:56:50,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.703872437357631) internal successors, (748), 440 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 23:56:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 748 transitions. [2022-01-10 23:56:50,230 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 748 transitions. Word has length 55 [2022-01-10 23:56:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:50,230 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 748 transitions. [2022-01-10 23:56:50,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 23:56:50,230 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 748 transitions. [2022-01-10 23:56:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 23:56:50,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:50,232 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] [2022-01-10 23:56:50,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:56:50,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:50,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:50,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1913765766, now seen corresponding path program 1 times [2022-01-10 23:56:50,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:50,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965558405] [2022-01-10 23:56:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:50,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:50,343 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 23:56:50,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:50,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965558405] [2022-01-10 23:56:50,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965558405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:50,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:50,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:56:50,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124171994] [2022-01-10 23:56:50,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:50,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:50,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:50,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:50,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:50,347 INFO L87 Difference]: Start difference. First operand 441 states and 748 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 23:56:50,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:50,566 INFO L93 Difference]: Finished difference Result 2073 states and 3536 transitions. [2022-01-10 23:56:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:56:50,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-10 23:56:50,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:50,577 INFO L225 Difference]: With dead ends: 2073 [2022-01-10 23:56:50,578 INFO L226 Difference]: Without dead ends: 1656 [2022-01-10 23:56:50,582 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 23:56:50,584 INFO L933 BasicCegarLoop]: 1419 mSDtfsCounter, 3523 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3523 SdHoareTripleChecker+Valid, 3535 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 23:56:50,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3523 Valid, 3535 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:50,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2022-01-10 23:56:50,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 441. [2022-01-10 23:56:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.7015945330296127) internal successors, (747), 440 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 23:56:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 747 transitions. [2022-01-10 23:56:50,621 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 747 transitions. Word has length 57 [2022-01-10 23:56:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:50,621 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 747 transitions. [2022-01-10 23:56:50,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 23:56:50,622 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 747 transitions. [2022-01-10 23:56:50,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 23:56:50,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:50,623 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] [2022-01-10 23:56:50,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:56:50,624 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:50,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:50,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1188931208, now seen corresponding path program 1 times [2022-01-10 23:56:50,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:50,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170086967] [2022-01-10 23:56:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:50,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:50,754 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 23:56:50,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:50,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170086967] [2022-01-10 23:56:50,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170086967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:50,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:50,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:56:50,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862653506] [2022-01-10 23:56:50,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:50,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:56:50,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:50,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:56:50,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:56:50,757 INFO L87 Difference]: Start difference. First operand 441 states and 747 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:56:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:50,795 INFO L93 Difference]: Finished difference Result 867 states and 1472 transitions. [2022-01-10 23:56:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:56:50,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-01-10 23:56:50,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:50,798 INFO L225 Difference]: With dead ends: 867 [2022-01-10 23:56:50,798 INFO L226 Difference]: Without dead ends: 455 [2022-01-10 23:56:50,799 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 23:56:50,805 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 726 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 783 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 23:56:50,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 783 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:56:50,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-01-10 23:56:50,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 441. [2022-01-10 23:56:50,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.6993166287015946) internal successors, (746), 440 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 23:56:50,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 746 transitions. [2022-01-10 23:56:50,835 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 746 transitions. Word has length 58 [2022-01-10 23:56:50,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:50,836 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 746 transitions. [2022-01-10 23:56:50,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:56:50,836 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 746 transitions. [2022-01-10 23:56:50,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 23:56:50,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:50,838 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 23:56:50,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:56:50,838 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:50,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:50,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1608343013, now seen corresponding path program 1 times [2022-01-10 23:56:50,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:50,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536330482] [2022-01-10 23:56:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:50,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:50,956 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 23:56:50,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:50,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536330482] [2022-01-10 23:56:50,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536330482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:50,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:50,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:56:50,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854714] [2022-01-10 23:56:50,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:50,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:50,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:50,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:50,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:50,958 INFO L87 Difference]: Start difference. First operand 441 states and 746 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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 23:56:51,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:51,084 INFO L93 Difference]: Finished difference Result 1257 states and 2138 transitions. [2022-01-10 23:56:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:56:51,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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 23:56:51,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:51,088 INFO L225 Difference]: With dead ends: 1257 [2022-01-10 23:56:51,088 INFO L226 Difference]: Without dead ends: 850 [2022-01-10 23:56:51,089 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 23:56:51,089 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 3446 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3446 SdHoareTripleChecker+Valid, 1524 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 23:56:51,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3446 Valid, 1524 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:51,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-01-10 23:56:51,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 441. [2022-01-10 23:56:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.6947608200455582) internal successors, (744), 440 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 23:56:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 744 transitions. [2022-01-10 23:56:51,114 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 744 transitions. Word has length 59 [2022-01-10 23:56:51,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:51,117 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 744 transitions. [2022-01-10 23:56:51,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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 23:56:51,117 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 744 transitions. [2022-01-10 23:56:51,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 23:56:51,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:51,119 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] [2022-01-10 23:56:51,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:56:51,119 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:51,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash 881984376, now seen corresponding path program 1 times [2022-01-10 23:56:51,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:51,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027564323] [2022-01-10 23:56:51,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:51,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:51,267 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 23:56:51,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:51,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027564323] [2022-01-10 23:56:51,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027564323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:51,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:51,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:56:51,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381637970] [2022-01-10 23:56:51,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:51,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:56:51,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:56:51,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:56:51,269 INFO L87 Difference]: Start difference. First operand 441 states and 744 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:51,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:51,662 INFO L93 Difference]: Finished difference Result 1478 states and 2445 transitions. [2022-01-10 23:56:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 23:56:51,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 23:56:51,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:51,667 INFO L225 Difference]: With dead ends: 1478 [2022-01-10 23:56:51,667 INFO L226 Difference]: Without dead ends: 1323 [2022-01-10 23:56:51,668 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 23:56:51,669 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 5119 mSDsluCounter, 5206 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5119 SdHoareTripleChecker+Valid, 6092 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:51,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5119 Valid, 6092 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:56:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2022-01-10 23:56:51,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 810. [2022-01-10 23:56:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 808 states have (on average 1.7103960396039604) internal successors, (1382), 809 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states 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 23:56:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1382 transitions. [2022-01-10 23:56:51,722 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1382 transitions. Word has length 61 [2022-01-10 23:56:51,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:51,724 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 1382 transitions. [2022-01-10 23:56:51,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:51,724 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1382 transitions. [2022-01-10 23:56:51,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:56:51,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:51,725 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 23:56:51,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:56:51,725 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:51,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:51,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1057918998, now seen corresponding path program 1 times [2022-01-10 23:56:51,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:51,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8998575] [2022-01-10 23:56:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:51,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:51,824 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 23:56:51,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:51,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8998575] [2022-01-10 23:56:51,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8998575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:51,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:51,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:56:51,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049336319] [2022-01-10 23:56:51,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:51,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:56:51,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:51,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:56:51,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:56:51,826 INFO L87 Difference]: Start difference. First operand 810 states and 1382 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 23:56:52,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:52,116 INFO L93 Difference]: Finished difference Result 2020 states and 3266 transitions. [2022-01-10 23:56:52,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:56:52,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 23:56:52,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:52,122 INFO L225 Difference]: With dead ends: 2020 [2022-01-10 23:56:52,122 INFO L226 Difference]: Without dead ends: 1739 [2022-01-10 23:56:52,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 23:56:52,124 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 1927 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 3930 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:52,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1927 Valid, 3930 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:52,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2022-01-10 23:56:52,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 869. [2022-01-10 23:56:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 867 states have (on average 1.698961937716263) internal successors, (1473), 868 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states 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 23:56:52,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1473 transitions. [2022-01-10 23:56:52,187 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1473 transitions. Word has length 62 [2022-01-10 23:56:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:52,188 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1473 transitions. [2022-01-10 23:56:52,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 23:56:52,188 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1473 transitions. [2022-01-10 23:56:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:56:52,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:52,189 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 23:56:52,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:56:52,189 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:52,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:52,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1340765044, now seen corresponding path program 1 times [2022-01-10 23:56:52,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:52,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352269108] [2022-01-10 23:56:52,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:52,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:52,291 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 23:56:52,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:52,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352269108] [2022-01-10 23:56:52,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352269108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:52,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:52,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:56:52,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162413417] [2022-01-10 23:56:52,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:52,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:52,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:52,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:52,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:52,293 INFO L87 Difference]: Start difference. First operand 869 states and 1473 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 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 23:56:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:52,570 INFO L93 Difference]: Finished difference Result 2772 states and 4498 transitions. [2022-01-10 23:56:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:56:52,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 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 23:56:52,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:52,578 INFO L225 Difference]: With dead ends: 2772 [2022-01-10 23:56:52,579 INFO L226 Difference]: Without dead ends: 2508 [2022-01-10 23:56:52,580 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 23:56:52,580 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 2338 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:52,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2338 Valid, 2725 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:56:52,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2022-01-10 23:56:52,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 1226. [2022-01-10 23:56:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1224 states have (on average 1.6691176470588236) internal successors, (2043), 1225 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states 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 23:56:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 2043 transitions. [2022-01-10 23:56:52,678 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 2043 transitions. Word has length 62 [2022-01-10 23:56:52,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:52,678 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 2043 transitions. [2022-01-10 23:56:52,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 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 23:56:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 2043 transitions. [2022-01-10 23:56:52,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:56:52,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:52,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:52,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:56:52,679 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:52,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash -689906013, now seen corresponding path program 1 times [2022-01-10 23:56:52,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:52,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074857650] [2022-01-10 23:56:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:52,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:52,764 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 23:56:52,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:52,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074857650] [2022-01-10 23:56:52,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074857650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:52,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:52,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:56:52,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126963277] [2022-01-10 23:56:52,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:52,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:56:52,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:56:52,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:56:52,766 INFO L87 Difference]: Start difference. First operand 1226 states and 2043 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 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 23:56:53,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:53,004 INFO L93 Difference]: Finished difference Result 2067 states and 3370 transitions. [2022-01-10 23:56:53,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:56:53,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 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 23:56:53,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:53,014 INFO L225 Difference]: With dead ends: 2067 [2022-01-10 23:56:53,014 INFO L226 Difference]: Without dead ends: 1551 [2022-01-10 23:56:53,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-10 23:56:53,019 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 1916 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:53,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1916 Valid, 3905 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:56:53,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2022-01-10 23:56:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1212. [2022-01-10 23:56:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1210 states have (on average 1.665289256198347) internal successors, (2015), 1211 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states 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 23:56:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 2015 transitions. [2022-01-10 23:56:53,169 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 2015 transitions. Word has length 63 [2022-01-10 23:56:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:53,169 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 2015 transitions. [2022-01-10 23:56:53,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 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 23:56:53,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 2015 transitions. [2022-01-10 23:56:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:56:53,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:53,171 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 23:56:53,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:56:53,171 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:53,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1220791579, now seen corresponding path program 1 times [2022-01-10 23:56:53,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:53,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690839771] [2022-01-10 23:56:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:53,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:53,278 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 23:56:53,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:53,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690839771] [2022-01-10 23:56:53,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690839771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:53,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:53,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:56:53,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146770496] [2022-01-10 23:56:53,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:53,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:56:53,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:53,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:56:53,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:56:53,280 INFO L87 Difference]: Start difference. First operand 1212 states and 2015 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 23:56:54,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:54,144 INFO L93 Difference]: Finished difference Result 4764 states and 7601 transitions. [2022-01-10 23:56:54,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 23:56:54,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 23:56:54,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:54,158 INFO L225 Difference]: With dead ends: 4764 [2022-01-10 23:56:54,158 INFO L226 Difference]: Without dead ends: 4684 [2022-01-10 23:56:54,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-10 23:56:54,160 INFO L933 BasicCegarLoop]: 1362 mSDtfsCounter, 2660 mSDsluCounter, 5814 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 7176 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:54,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2660 Valid, 7176 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:56:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2022-01-10 23:56:54,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 1792. [2022-01-10 23:56:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1790 states have (on average 1.6363128491620111) internal successors, (2929), 1791 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states 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 23:56:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2929 transitions. [2022-01-10 23:56:54,324 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2929 transitions. Word has length 66 [2022-01-10 23:56:54,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:54,324 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 2929 transitions. [2022-01-10 23:56:54,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 23:56:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2929 transitions. [2022-01-10 23:56:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:56:54,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:54,326 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] [2022-01-10 23:56:54,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:56:54,326 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:54,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash -809217559, now seen corresponding path program 1 times [2022-01-10 23:56:54,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:54,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760054797] [2022-01-10 23:56:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:54,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:54,416 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 23:56:54,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:54,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760054797] [2022-01-10 23:56:54,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760054797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:54,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:54,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:56:54,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985246855] [2022-01-10 23:56:54,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:54,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:56:54,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:54,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:56:54,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:56:54,418 INFO L87 Difference]: Start difference. First operand 1792 states and 2929 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 23:56:54,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:54,946 INFO L93 Difference]: Finished difference Result 3715 states and 5930 transitions. [2022-01-10 23:56:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 23:56:54,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 23:56:54,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:54,958 INFO L225 Difference]: With dead ends: 3715 [2022-01-10 23:56:54,958 INFO L226 Difference]: Without dead ends: 3461 [2022-01-10 23:56:54,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2022-01-10 23:56:54,961 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 3045 mSDsluCounter, 4313 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 5027 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:54,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3045 Valid, 5027 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:54,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2022-01-10 23:56:55,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 1882. [2022-01-10 23:56:55,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1880 states have (on average 1.6308510638297873) internal successors, (3066), 1881 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states 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 23:56:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 3066 transitions. [2022-01-10 23:56:55,145 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 3066 transitions. Word has length 67 [2022-01-10 23:56:55,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:55,145 INFO L470 AbstractCegarLoop]: Abstraction has 1882 states and 3066 transitions. [2022-01-10 23:56:55,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 23:56:55,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 3066 transitions. [2022-01-10 23:56:55,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:56:55,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:55,147 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 23:56:55,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:56:55,148 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:55,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:55,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1961730215, now seen corresponding path program 1 times [2022-01-10 23:56:55,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:55,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496358050] [2022-01-10 23:56:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:55,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:55,212 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 23:56:55,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:55,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496358050] [2022-01-10 23:56:55,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496358050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:55,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:55,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:56:55,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114153187] [2022-01-10 23:56:55,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:55,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:55,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:55,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:55,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:55,213 INFO L87 Difference]: Start difference. First operand 1882 states and 3066 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 23:56:55,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:55,506 INFO L93 Difference]: Finished difference Result 3244 states and 5209 transitions. [2022-01-10 23:56:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:56:55,506 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 23:56:55,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:55,513 INFO L225 Difference]: With dead ends: 3244 [2022-01-10 23:56:55,513 INFO L226 Difference]: Without dead ends: 2468 [2022-01-10 23:56:55,515 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 23:56:55,516 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 1609 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:55,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1609 Valid, 1797 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:56:55,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2022-01-10 23:56:55,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 1882. [2022-01-10 23:56:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1880 states have (on average 1.6287234042553191) internal successors, (3062), 1881 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states 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 23:56:55,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 3062 transitions. [2022-01-10 23:56:55,705 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 3062 transitions. Word has length 67 [2022-01-10 23:56:55,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:55,705 INFO L470 AbstractCegarLoop]: Abstraction has 1882 states and 3062 transitions. [2022-01-10 23:56:55,705 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 23:56:55,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 3062 transitions. [2022-01-10 23:56:55,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:56:55,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:55,707 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 23:56:55,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:56:55,707 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:55,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash 685276722, now seen corresponding path program 1 times [2022-01-10 23:56:55,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:55,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606773651] [2022-01-10 23:56:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:55,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:56:55,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:55,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606773651] [2022-01-10 23:56:55,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606773651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:55,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:55,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:56:55,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600105108] [2022-01-10 23:56:55,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:55,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:56:55,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:55,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:56:55,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:56:55,804 INFO L87 Difference]: Start difference. First operand 1882 states and 3062 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 23:56:56,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:56,494 INFO L93 Difference]: Finished difference Result 4597 states and 7216 transitions. [2022-01-10 23:56:56,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:56:56,495 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 23:56:56,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:56,521 INFO L225 Difference]: With dead ends: 4597 [2022-01-10 23:56:56,521 INFO L226 Difference]: Without dead ends: 3597 [2022-01-10 23:56:56,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 23:56:56,525 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 1969 mSDsluCounter, 3008 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:56,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 3732 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2022-01-10 23:56:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 1862. [2022-01-10 23:56:56,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1860 states have (on average 1.6263440860215055) internal successors, (3025), 1861 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states 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 23:56:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 3025 transitions. [2022-01-10 23:56:56,729 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 3025 transitions. Word has length 68 [2022-01-10 23:56:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:56,730 INFO L470 AbstractCegarLoop]: Abstraction has 1862 states and 3025 transitions. [2022-01-10 23:56:56,730 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 23:56:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 3025 transitions. [2022-01-10 23:56:56,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:56:56,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:56,732 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 23:56:56,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:56:56,732 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:56,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:56,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1889345489, now seen corresponding path program 1 times [2022-01-10 23:56:56,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:56,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823188825] [2022-01-10 23:56:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:56,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:56,876 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 23:56:56,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:56,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823188825] [2022-01-10 23:56:56,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823188825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:56,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:56,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:56:56,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102120141] [2022-01-10 23:56:56,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:56,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:56:56,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:56,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:56:56,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:56:56,878 INFO L87 Difference]: Start difference. First operand 1862 states and 3025 transitions. Second operand has 8 states, 8 states have (on average 8.5) 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 23:56:57,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:57,446 INFO L93 Difference]: Finished difference Result 3273 states and 5228 transitions. [2022-01-10 23:56:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 23:56:57,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) 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 23:56:57,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:57,452 INFO L225 Difference]: With dead ends: 3273 [2022-01-10 23:56:57,452 INFO L226 Difference]: Without dead ends: 2817 [2022-01-10 23:56:57,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-01-10 23:56:57,454 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 2379 mSDsluCounter, 4301 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2379 SdHoareTripleChecker+Valid, 5019 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:57,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2379 Valid, 5019 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:57,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2022-01-10 23:56:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 1758. [2022-01-10 23:56:57,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1756 states have (on average 1.6292710706150342) internal successors, (2861), 1757 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states 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 23:56:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2861 transitions. [2022-01-10 23:56:57,639 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2861 transitions. Word has length 68 [2022-01-10 23:56:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:57,640 INFO L470 AbstractCegarLoop]: Abstraction has 1758 states and 2861 transitions. [2022-01-10 23:56:57,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) 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 23:56:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2861 transitions. [2022-01-10 23:56:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:56:57,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:57,642 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 23:56:57,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:56:57,642 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:57,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1448585546, now seen corresponding path program 1 times [2022-01-10 23:56:57,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:57,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101827527] [2022-01-10 23:56:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:57,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:57,723 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 23:56:57,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:57,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101827527] [2022-01-10 23:56:57,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101827527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:57,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:57,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:56:57,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119229413] [2022-01-10 23:56:57,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:57,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:56:57,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:57,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:56:57,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:56:57,725 INFO L87 Difference]: Start difference. First operand 1758 states and 2861 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 23:56:58,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:58,025 INFO L93 Difference]: Finished difference Result 2949 states and 4742 transitions. [2022-01-10 23:56:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:56:58,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 23:56:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:58,029 INFO L225 Difference]: With dead ends: 2949 [2022-01-10 23:56:58,029 INFO L226 Difference]: Without dead ends: 2175 [2022-01-10 23:56:58,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 23:56:58,030 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 579 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:58,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 2462 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:56:58,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2022-01-10 23:56:58,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 1464. [2022-01-10 23:56:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 1.6288448393711552) internal successors, (2383), 1463 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states 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 23:56:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2383 transitions. [2022-01-10 23:56:58,213 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2383 transitions. Word has length 68 [2022-01-10 23:56:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:58,213 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 2383 transitions. [2022-01-10 23:56:58,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 23:56:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2383 transitions. [2022-01-10 23:56:58,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 23:56:58,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:58,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:58,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:56:58,216 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:58,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1412705161, now seen corresponding path program 1 times [2022-01-10 23:56:58,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:58,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083089658] [2022-01-10 23:56:58,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:58,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:58,282 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 23:56:58,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:58,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083089658] [2022-01-10 23:56:58,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083089658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:58,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:58,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:56:58,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270427694] [2022-01-10 23:56:58,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:58,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:56:58,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:56:58,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:56:58,284 INFO L87 Difference]: Start difference. First operand 1464 states and 2383 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 23:56:58,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:58,416 INFO L93 Difference]: Finished difference Result 2018 states and 3258 transitions. [2022-01-10 23:56:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:56:58,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 23:56:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:58,419 INFO L225 Difference]: With dead ends: 2018 [2022-01-10 23:56:58,419 INFO L226 Difference]: Without dead ends: 1464 [2022-01-10 23:56:58,420 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 23:56:58,421 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 573 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1614 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 23:56:58,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 1614 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:56:58,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2022-01-10 23:56:58,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1464. [2022-01-10 23:56:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 1.6281613123718386) internal successors, (2382), 1463 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states 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 23:56:58,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2382 transitions. [2022-01-10 23:56:58,589 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2382 transitions. Word has length 107 [2022-01-10 23:56:58,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:58,589 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 2382 transitions. [2022-01-10 23:56:58,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 23:56:58,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2382 transitions. [2022-01-10 23:56:58,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 23:56:58,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:58,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:58,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:56:58,593 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:58,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1928033240, now seen corresponding path program 1 times [2022-01-10 23:56:58,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:58,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571040373] [2022-01-10 23:56:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:58,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:58,700 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 23:56:58,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:58,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571040373] [2022-01-10 23:56:58,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571040373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:58,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:58,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:56:58,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961854462] [2022-01-10 23:56:58,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:58,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:56:58,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:58,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:56:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:56:58,702 INFO L87 Difference]: Start difference. First operand 1464 states and 2382 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 23:56:59,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:59,310 INFO L93 Difference]: Finished difference Result 4089 states and 6496 transitions. [2022-01-10 23:56:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:56:59,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 23:56:59,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:59,317 INFO L225 Difference]: With dead ends: 4089 [2022-01-10 23:56:59,317 INFO L226 Difference]: Without dead ends: 3392 [2022-01-10 23:56:59,319 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 23:56:59,319 INFO L933 BasicCegarLoop]: 1245 mSDtfsCounter, 1375 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:59,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 3817 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:56:59,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2022-01-10 23:56:59,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 1610. [2022-01-10 23:56:59,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1609 states have (on average 1.6121814791796147) internal successors, (2594), 1609 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states 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 23:56:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2594 transitions. [2022-01-10 23:56:59,490 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2594 transitions. Word has length 107 [2022-01-10 23:56:59,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:59,490 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2594 transitions. [2022-01-10 23:56:59,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 23:56:59,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2594 transitions. [2022-01-10 23:56:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 23:56:59,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:59,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:56:59,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:56:59,494 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:56:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash -169234573, now seen corresponding path program 1 times [2022-01-10 23:56:59,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:59,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928788425] [2022-01-10 23:56:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:59,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:59,597 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 23:56:59,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:59,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928788425] [2022-01-10 23:56:59,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928788425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:59,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:59,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:56:59,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457130811] [2022-01-10 23:56:59,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:59,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:56:59,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:59,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:56:59,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:56:59,598 INFO L87 Difference]: Start difference. First operand 1610 states and 2594 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 23:57:00,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:57:00,659 INFO L93 Difference]: Finished difference Result 8435 states and 13490 transitions. [2022-01-10 23:57:00,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:57:00,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 23:57:00,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:57:00,673 INFO L225 Difference]: With dead ends: 8435 [2022-01-10 23:57:00,673 INFO L226 Difference]: Without dead ends: 7852 [2022-01-10 23:57:00,677 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 23:57:00,677 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 3830 mSDsluCounter, 3753 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3830 SdHoareTripleChecker+Valid, 4619 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:57:00,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3830 Valid, 4619 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:57:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7852 states. [2022-01-10 23:57:00,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7852 to 2485. [2022-01-10 23:57:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 1.6272141706924315) internal successors, (4042), 2484 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states 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 23:57:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 4042 transitions. [2022-01-10 23:57:00,947 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 4042 transitions. Word has length 108 [2022-01-10 23:57:00,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:57:00,947 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 4042 transitions. [2022-01-10 23:57:00,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 23:57:00,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 4042 transitions. [2022-01-10 23:57:00,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 23:57:00,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:57:00,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:57:00,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:57:00,952 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:57:00,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:57:00,953 INFO L85 PathProgramCache]: Analyzing trace with hash -840673334, now seen corresponding path program 1 times [2022-01-10 23:57:00,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:57:00,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219370498] [2022-01-10 23:57:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:57:00,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:57:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:57:01,028 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 23:57:01,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:57:01,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219370498] [2022-01-10 23:57:01,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219370498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:57:01,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:57:01,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:57:01,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448420157] [2022-01-10 23:57:01,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:57:01,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:57:01,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:57:01,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:57:01,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:57:01,031 INFO L87 Difference]: Start difference. First operand 2485 states and 4042 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 23:57:02,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:57:02,031 INFO L93 Difference]: Finished difference Result 7435 states and 11935 transitions. [2022-01-10 23:57:02,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:57:02,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-10 23:57:02,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:57:02,043 INFO L225 Difference]: With dead ends: 7435 [2022-01-10 23:57:02,043 INFO L226 Difference]: Without dead ends: 7024 [2022-01-10 23:57:02,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:57:02,046 INFO L933 BasicCegarLoop]: 1271 mSDtfsCounter, 3317 mSDsluCounter, 4400 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 5671 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:57:02,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3317 Valid, 5671 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:57:02,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2022-01-10 23:57:02,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 2622. [2022-01-10 23:57:02,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 2621 states have (on average 1.6222815719191148) internal successors, (4252), 2621 states have internal predecessors, (4252), 0 states have call successors, (0), 0 states 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 23:57:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 4252 transitions. [2022-01-10 23:57:02,347 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 4252 transitions. Word has length 109 [2022-01-10 23:57:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:57:02,347 INFO L470 AbstractCegarLoop]: Abstraction has 2622 states and 4252 transitions. [2022-01-10 23:57:02,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 23:57:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 4252 transitions. [2022-01-10 23:57:02,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 23:57:02,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:57:02,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:57:02,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:57:02,352 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:57:02,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:57:02,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1387410409, now seen corresponding path program 1 times [2022-01-10 23:57:02,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:57:02,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031653500] [2022-01-10 23:57:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:57:02,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:57:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:57:02,410 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 23:57:02,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:57:02,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031653500] [2022-01-10 23:57:02,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031653500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:57:02,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:57:02,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:57:02,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183074558] [2022-01-10 23:57:02,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:57:02,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:57:02,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:57:02,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:57:02,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:57:02,411 INFO L87 Difference]: Start difference. First operand 2622 states and 4252 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 23:57:03,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:57:03,053 INFO L93 Difference]: Finished difference Result 7717 states and 12541 transitions. [2022-01-10 23:57:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:57:03,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-10 23:57:03,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:57:03,060 INFO L225 Difference]: With dead ends: 7717 [2022-01-10 23:57:03,060 INFO L226 Difference]: Without dead ends: 5132 [2022-01-10 23:57:03,063 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 23:57:03,064 INFO L933 BasicCegarLoop]: 1367 mSDtfsCounter, 2133 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 2052 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 23:57:03,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2133 Valid, 2052 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:57:03,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states. [2022-01-10 23:57:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5132 to 2622. [2022-01-10 23:57:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 2621 states have (on average 1.6215185043876383) internal successors, (4250), 2621 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states 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 23:57:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 4250 transitions. [2022-01-10 23:57:03,354 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 4250 transitions. Word has length 109 [2022-01-10 23:57:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:57:03,354 INFO L470 AbstractCegarLoop]: Abstraction has 2622 states and 4250 transitions. [2022-01-10 23:57:03,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 23:57:03,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 4250 transitions. [2022-01-10 23:57:03,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 23:57:03,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:57:03,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:57:03,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:57:03,358 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:57:03,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:57:03,358 INFO L85 PathProgramCache]: Analyzing trace with hash 165879095, now seen corresponding path program 1 times [2022-01-10 23:57:03,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:57:03,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810256745] [2022-01-10 23:57:03,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:57:03,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:57:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:57:03,446 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 23:57:03,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:57:03,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810256745] [2022-01-10 23:57:03,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810256745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:57:03,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:57:03,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:57:03,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662235111] [2022-01-10 23:57:03,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:57:03,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:57:03,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:57:03,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:57:03,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:57:03,449 INFO L87 Difference]: Start difference. First operand 2622 states and 4250 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 23:57:04,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:57:04,515 INFO L93 Difference]: Finished difference Result 7356 states and 11518 transitions. [2022-01-10 23:57:04,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:57:04,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 23:57:04,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:57:04,522 INFO L225 Difference]: With dead ends: 7356 [2022-01-10 23:57:04,523 INFO L226 Difference]: Without dead ends: 6717 [2022-01-10 23:57:04,524 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 23:57:04,524 INFO L933 BasicCegarLoop]: 734 mSDtfsCounter, 1644 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:57:04,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 2884 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:57:04,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2022-01-10 23:57:04,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 3202. [2022-01-10 23:57:04,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3202 states, 3201 states have (on average 1.5976257419556388) internal successors, (5114), 3201 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states 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 23:57:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 5114 transitions. [2022-01-10 23:57:04,888 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 5114 transitions. Word has length 110 [2022-01-10 23:57:04,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:57:04,888 INFO L470 AbstractCegarLoop]: Abstraction has 3202 states and 5114 transitions. [2022-01-10 23:57:04,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 23:57:04,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 5114 transitions. [2022-01-10 23:57:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 23:57:04,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:57:04,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:57:04,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 23:57:04,894 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:57:04,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:57:04,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1918009689, now seen corresponding path program 1 times [2022-01-10 23:57:04,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:57:04,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372145996] [2022-01-10 23:57:04,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:57:04,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:57:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:57:04,982 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 23:57:04,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:57:04,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372145996] [2022-01-10 23:57:04,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372145996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:57:04,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:57:04,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:57:04,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061435215] [2022-01-10 23:57:04,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:57:04,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:57:04,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:57:04,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:57:04,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:57:04,984 INFO L87 Difference]: Start difference. First operand 3202 states and 5114 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 23:57:05,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:57:05,574 INFO L93 Difference]: Finished difference Result 4623 states and 7196 transitions. [2022-01-10 23:57:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:57:05,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 23:57:05,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:57:05,581 INFO L225 Difference]: With dead ends: 4623 [2022-01-10 23:57:05,581 INFO L226 Difference]: Without dead ends: 4232 [2022-01-10 23:57:05,582 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 23:57:05,582 INFO L933 BasicCegarLoop]: 824 mSDtfsCounter, 598 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:57:05,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [598 Valid, 3146 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:57:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2022-01-10 23:57:05,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 3218. [2022-01-10 23:57:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3217 states have (on average 1.5946534037923532) internal successors, (5130), 3217 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states 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 23:57:05,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5130 transitions. [2022-01-10 23:57:05,976 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5130 transitions. Word has length 111 [2022-01-10 23:57:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:57:05,977 INFO L470 AbstractCegarLoop]: Abstraction has 3218 states and 5130 transitions. [2022-01-10 23:57:05,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 23:57:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5130 transitions. [2022-01-10 23:57:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 23:57:05,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:57:05,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:57:05,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 23:57:05,982 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:57:05,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:57:05,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1111812601, now seen corresponding path program 1 times [2022-01-10 23:57:05,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:57:05,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551606048] [2022-01-10 23:57:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:57:05,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:57:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:57:06,112 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 23:57:06,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:57:06,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551606048] [2022-01-10 23:57:06,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551606048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:57:06,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:57:06,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:57:06,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858766901] [2022-01-10 23:57:06,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:57:06,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:57:06,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:57:06,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:57:06,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:57:06,114 INFO L87 Difference]: Start difference. First operand 3218 states and 5130 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 23:57:06,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:57:06,667 INFO L93 Difference]: Finished difference Result 4209 states and 6656 transitions. [2022-01-10 23:57:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 23:57:06,668 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 23:57:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:57:06,671 INFO L225 Difference]: With dead ends: 4209 [2022-01-10 23:57:06,671 INFO L226 Difference]: Without dead ends: 3234 [2022-01-10 23:57:06,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2022-01-10 23:57:06,673 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1706 mSDsluCounter, 4032 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 4738 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:57:06,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 4738 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:57:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2022-01-10 23:57:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 3218. [2022-01-10 23:57:07,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3217 states have (on average 1.5871930369909855) internal successors, (5106), 3217 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states 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 23:57:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5106 transitions. [2022-01-10 23:57:07,031 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5106 transitions. Word has length 111 [2022-01-10 23:57:07,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:57:07,031 INFO L470 AbstractCegarLoop]: Abstraction has 3218 states and 5106 transitions. [2022-01-10 23:57:07,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 23:57:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5106 transitions. [2022-01-10 23:57:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 23:57:07,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:57:07,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:57:07,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 23:57:07,036 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:57:07,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:57:07,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1113793047, now seen corresponding path program 1 times [2022-01-10 23:57:07,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:57:07,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890732581] [2022-01-10 23:57:07,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:57:07,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:57:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:57:07,104 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 23:57:07,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:57:07,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890732581] [2022-01-10 23:57:07,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890732581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:57:07,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:57:07,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:57:07,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056403523] [2022-01-10 23:57:07,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:57:07,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:57:07,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:57:07,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:57:07,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:57:07,106 INFO L87 Difference]: Start difference. First operand 3218 states and 5106 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 23:57:08,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:57:08,142 INFO L93 Difference]: Finished difference Result 7814 states and 11893 transitions. [2022-01-10 23:57:08,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:57:08,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-10 23:57:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:57:08,149 INFO L225 Difference]: With dead ends: 7814 [2022-01-10 23:57:08,149 INFO L226 Difference]: Without dead ends: 5893 [2022-01-10 23:57:08,152 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 23:57:08,152 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 478 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:57:08,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 2338 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:57:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2022-01-10 23:57:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 3264. [2022-01-10 23:57:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3264 states, 3263 states have (on average 1.5789151087955868) internal successors, (5152), 3263 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states 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 23:57:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3264 states to 3264 states and 5152 transitions. [2022-01-10 23:57:08,578 INFO L78 Accepts]: Start accepts. Automaton has 3264 states and 5152 transitions. Word has length 114 [2022-01-10 23:57:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:57:08,579 INFO L470 AbstractCegarLoop]: Abstraction has 3264 states and 5152 transitions. [2022-01-10 23:57:08,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 23:57:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3264 states and 5152 transitions. [2022-01-10 23:57:08,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 23:57:08,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:57:08,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:57:08,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 23:57:08,584 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:57:08,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:57:08,584 INFO L85 PathProgramCache]: Analyzing trace with hash 339154142, now seen corresponding path program 1 times [2022-01-10 23:57:08,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:57:08,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538289321] [2022-01-10 23:57:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:57:08,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:57:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:57:08,667 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 23:57:08,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:57:08,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538289321] [2022-01-10 23:57:08,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538289321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:57:08,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:57:08,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:57:08,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962190815] [2022-01-10 23:57:08,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:57:08,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:57:08,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:57:08,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:57:08,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:57:08,669 INFO L87 Difference]: Start difference. First operand 3264 states and 5152 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 23:57:09,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:57:09,049 INFO L93 Difference]: Finished difference Result 3264 states and 5152 transitions. [2022-01-10 23:57:09,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:57:09,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-10 23:57:09,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:57:09,050 INFO L225 Difference]: With dead ends: 3264 [2022-01-10 23:57:09,050 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 23:57:09,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 23:57:09,052 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 558 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:57:09,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 1919 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:57:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 23:57:09,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 23:57:09,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states 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 23:57:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 23:57:09,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2022-01-10 23:57:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:57:09,053 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 23:57:09,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 23:57:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 23:57:09,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 23:57:09,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 23:57:09,059 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 23:57:09,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 23:57:09,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 23:57:41,455 WARN L228 SmtUtils]: Spent 32.34s on a formula simplification that was a NOOP. DAG size: 341 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)