/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:41:20,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:41:20,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:41:20,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:41:20,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:41:20,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:41:20,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:41:20,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:41:20,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:41:20,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:41:20,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:41:20,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:41:20,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:41:20,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:41:20,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:41:20,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:41:20,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:41:20,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:41:20,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:41:20,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:41:20,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:41:20,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:41:20,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:41:20,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:41:20,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:41:20,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:41:20,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:41:20,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:41:20,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:41:20,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:41:20,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:41:20,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:41:20,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:41:20,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:41:20,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:41:20,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:41:20,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:41:20,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:41:20,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:41:20,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:41:20,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:41:20,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:41:20,530 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:41:20,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:41:20,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:41:20,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:41:20,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:41:20,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:41:20,532 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:41:20,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:41:20,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:41:20,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:41:20,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:41:20,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:41:20,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:41:20,533 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:41:20,533 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:41:20,533 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:41:20,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:41:20,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:41:20,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:41:20,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:41:20,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:41:20,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:41:20,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:41:20,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:41:20,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:41:20,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:41:20,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:41:20,534 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:41:20,534 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:41:20,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:41:20,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:41:20,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:41:20,535 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:41:20,535 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:41:20,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:41:20,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:41:20,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:41:20,765 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:41:20,765 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:41:20,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product24.cil.c [2022-01-11 05:41:20,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1055af579/0613398d964d467dbf597086a5818217/FLAG3a5c14299 [2022-01-11 05:41:21,267 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:41:21,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product24.cil.c [2022-01-11 05:41:21,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1055af579/0613398d964d467dbf597086a5818217/FLAG3a5c14299 [2022-01-11 05:41:21,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1055af579/0613398d964d467dbf597086a5818217 [2022-01-11 05:41:21,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:41:21,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:41:21,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:41:21,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:41:21,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:41:21,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:41:21" (1/1) ... [2022-01-11 05:41:21,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa5d111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21, skipping insertion in model container [2022-01-11 05:41:21,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:41:21" (1/1) ... [2022-01-11 05:41:21,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:41:21,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:41:21,745 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_spec27_product24.cil.c[62587,62600] [2022-01-11 05:41:21,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:41:21,768 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:41:21,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:41:21,849 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_spec27_product24.cil.c[62587,62600] [2022-01-11 05:41:21,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:41:21,854 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:41:21,915 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_spec27_product24.cil.c[62587,62600] [2022-01-11 05:41:21,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:41:21,940 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:41:21,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21 WrapperNode [2022-01-11 05:41:21,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:41:21,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:41:21,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:41:21,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:41:21,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21" (1/1) ... [2022-01-11 05:41:21,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21" (1/1) ... [2022-01-11 05:41:22,047 INFO L137 Inliner]: procedures = 132, calls = 210, calls flagged for inlining = 121, calls inlined = 165, statements flattened = 2424 [2022-01-11 05:41:22,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:41:22,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:41:22,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:41:22,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:41:22,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21" (1/1) ... [2022-01-11 05:41:22,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21" (1/1) ... [2022-01-11 05:41:22,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21" (1/1) ... [2022-01-11 05:41:22,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21" (1/1) ... [2022-01-11 05:41:22,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21" (1/1) ... [2022-01-11 05:41:22,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21" (1/1) ... [2022-01-11 05:41:22,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21" (1/1) ... [2022-01-11 05:41:22,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:41:22,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:41:22,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:41:22,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:41:22,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21" (1/1) ... [2022-01-11 05:41:22,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:41:22,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:41:22,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:41:22,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:41:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 05:41:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:41:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:41:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:41:22,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:41:22,438 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:41:22,439 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:41:23,485 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:41:23,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:41:23,494 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 05:41:23,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:41:23 BoogieIcfgContainer [2022-01-11 05:41:23,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:41:23,497 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:41:23,497 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:41:23,498 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:41:23,500 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:41:23" (1/1) ... [2022-01-11 05:41:23,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:41:23 BasicIcfg [2022-01-11 05:41:23,744 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:41:23,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:41:23,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:41:23,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:41:23,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:41:21" (1/4) ... [2022-01-11 05:41:23,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7795e0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:41:23, skipping insertion in model container [2022-01-11 05:41:23,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:21" (2/4) ... [2022-01-11 05:41:23,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7795e0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:41:23, skipping insertion in model container [2022-01-11 05:41:23,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:41:23" (3/4) ... [2022-01-11 05:41:23,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7795e0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:41:23, skipping insertion in model container [2022-01-11 05:41:23,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:41:23" (4/4) ... [2022-01-11 05:41:23,749 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product24.cil.cTransformedIcfg [2022-01-11 05:41:23,752 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:41:23,753 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 05:41:23,794 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:41:23,800 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:41:23,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 05:41:23,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 541 states, 538 states have (on average 1.6821561338289963) internal successors, (905), 540 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:23,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 05:41:23,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:23,839 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] [2022-01-11 05:41:23,840 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:23,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:23,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1019145812, now seen corresponding path program 1 times [2022-01-11 05:41:23,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:23,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493033975] [2022-01-11 05:41:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:23,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:24,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:24,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493033975] [2022-01-11 05:41:24,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493033975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:24,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:24,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:41:24,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673592497] [2022-01-11 05:41:24,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:24,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:41:24,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:41:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:41:24,194 INFO L87 Difference]: Start difference. First operand has 541 states, 538 states have (on average 1.6821561338289963) internal successors, (905), 540 states have internal predecessors, (905), 0 states have call successors, (0), 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 27.5) internal successors, (55), 2 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) [2022-01-11 05:41:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:24,236 INFO L93 Difference]: Finished difference Result 816 states and 1342 transitions. [2022-01-11 05:41:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:41:24,239 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 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 [2022-01-11 05:41:24,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:24,250 INFO L225 Difference]: With dead ends: 816 [2022-01-11 05:41:24,250 INFO L226 Difference]: Without dead ends: 479 [2022-01-11 05:41:24,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:41:24,255 INFO L933 BasicCegarLoop]: 899 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, 899 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:24,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-01-11 05:41:24,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2022-01-11 05:41:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 1.6981132075471699) internal successors, (810), 478 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 810 transitions. [2022-01-11 05:41:24,346 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 810 transitions. Word has length 55 [2022-01-11 05:41:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:24,346 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 810 transitions. [2022-01-11 05:41:24,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 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) [2022-01-11 05:41:24,346 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 810 transitions. [2022-01-11 05:41:24,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 05:41:24,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:24,348 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] [2022-01-11 05:41:24,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:41:24,348 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:24,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:24,349 INFO L85 PathProgramCache]: Analyzing trace with hash -690631478, now seen corresponding path program 1 times [2022-01-11 05:41:24,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:24,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446741762] [2022-01-11 05:41:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:24,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:24,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:24,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446741762] [2022-01-11 05:41:24,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446741762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:24,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:24,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:41:24,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442341455] [2022-01-11 05:41:24,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:24,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:41:24,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:24,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:41:24,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:41:24,550 INFO L87 Difference]: Start difference. First operand 479 states and 810 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:24,636 INFO L93 Difference]: Finished difference Result 939 states and 1592 transitions. [2022-01-11 05:41:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:41:24,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-11 05:41:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:24,640 INFO L225 Difference]: With dead ends: 939 [2022-01-11 05:41:24,641 INFO L226 Difference]: Without dead ends: 479 [2022-01-11 05:41:24,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:41:24,646 INFO L933 BasicCegarLoop]: 790 mSDtfsCounter, 785 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:24,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 803 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-01-11 05:41:24,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2022-01-11 05:41:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 1.6939203354297694) internal successors, (808), 478 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:24,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 808 transitions. [2022-01-11 05:41:24,687 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 808 transitions. Word has length 56 [2022-01-11 05:41:24,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:24,687 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 808 transitions. [2022-01-11 05:41:24,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 808 transitions. [2022-01-11 05:41:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 05:41:24,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:24,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:24,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:41:24,689 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1008072906, now seen corresponding path program 1 times [2022-01-11 05:41:24,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:24,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774150864] [2022-01-11 05:41:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:24,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:24,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:24,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774150864] [2022-01-11 05:41:24,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774150864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:24,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:24,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:41:24,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651188852] [2022-01-11 05:41:24,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:24,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:24,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:24,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:24,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:24,839 INFO L87 Difference]: Start difference. First operand 479 states and 808 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2022-01-11 05:41:25,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:25,038 INFO L93 Difference]: Finished difference Result 2263 states and 3836 transitions. [2022-01-11 05:41:25,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:41:25,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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 [2022-01-11 05:41:25,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:25,046 INFO L225 Difference]: With dead ends: 2263 [2022-01-11 05:41:25,047 INFO L226 Difference]: Without dead ends: 1808 [2022-01-11 05:41:25,050 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 [2022-01-11 05:41:25,053 INFO L933 BasicCegarLoop]: 1539 mSDtfsCounter, 3823 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 3835 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 [2022-01-11 05:41:25,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3823 Valid, 3835 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:25,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-01-11 05:41:25,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 479. [2022-01-11 05:41:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 1.6918238993710693) internal successors, (807), 478 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 807 transitions. [2022-01-11 05:41:25,094 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 807 transitions. Word has length 58 [2022-01-11 05:41:25,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:25,094 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 807 transitions. [2022-01-11 05:41:25,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2022-01-11 05:41:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 807 transitions. [2022-01-11 05:41:25,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 05:41:25,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:25,097 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] [2022-01-11 05:41:25,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:41:25,098 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:25,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:25,099 INFO L85 PathProgramCache]: Analyzing trace with hash -459976146, now seen corresponding path program 1 times [2022-01-11 05:41:25,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:25,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123768868] [2022-01-11 05:41:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:25,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:25,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:25,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123768868] [2022-01-11 05:41:25,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123768868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:25,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:25,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:41:25,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200051647] [2022-01-11 05:41:25,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:25,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:41:25,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:41:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:41:25,213 INFO L87 Difference]: Start difference. First operand 479 states and 807 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2022-01-11 05:41:25,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:25,258 INFO L93 Difference]: Finished difference Result 943 states and 1592 transitions. [2022-01-11 05:41:25,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:41:25,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 [2022-01-11 05:41:25,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:25,261 INFO L225 Difference]: With dead ends: 943 [2022-01-11 05:41:25,261 INFO L226 Difference]: Without dead ends: 493 [2022-01-11 05:41:25,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:41:25,269 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 786 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 843 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 [2022-01-11 05:41:25,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 843 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-11 05:41:25,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 479. [2022-01-11 05:41:25,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 1.689727463312369) internal successors, (806), 478 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:25,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 806 transitions. [2022-01-11 05:41:25,292 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 806 transitions. Word has length 59 [2022-01-11 05:41:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:25,294 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 806 transitions. [2022-01-11 05:41:25,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2022-01-11 05:41:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 806 transitions. [2022-01-11 05:41:25,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 05:41:25,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:25,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:25,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:41:25,296 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:25,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:25,299 INFO L85 PathProgramCache]: Analyzing trace with hash -525500023, now seen corresponding path program 1 times [2022-01-11 05:41:25,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:25,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684429285] [2022-01-11 05:41:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:25,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:25,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:25,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684429285] [2022-01-11 05:41:25,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684429285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:25,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:25,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:41:25,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087508600] [2022-01-11 05:41:25,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:25,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:25,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:25,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:25,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:25,399 INFO L87 Difference]: Start difference. First operand 479 states and 806 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:25,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:25,537 INFO L93 Difference]: Finished difference Result 1371 states and 2318 transitions. [2022-01-11 05:41:25,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:41:25,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-11 05:41:25,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:25,542 INFO L225 Difference]: With dead ends: 1371 [2022-01-11 05:41:25,542 INFO L226 Difference]: Without dead ends: 926 [2022-01-11 05:41:25,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:41:25,543 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 3746 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 1644 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 [2022-01-11 05:41:25,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 1644 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-01-11 05:41:25,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 479. [2022-01-11 05:41:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 1.6855345911949686) internal successors, (804), 478 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 804 transitions. [2022-01-11 05:41:25,578 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 804 transitions. Word has length 60 [2022-01-11 05:41:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:25,578 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 804 transitions. [2022-01-11 05:41:25,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 804 transitions. [2022-01-11 05:41:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 05:41:25,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:25,579 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] [2022-01-11 05:41:25,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:41:25,580 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:25,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:25,580 INFO L85 PathProgramCache]: Analyzing trace with hash 961901068, now seen corresponding path program 1 times [2022-01-11 05:41:25,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:25,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801844588] [2022-01-11 05:41:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:25,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:25,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:25,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801844588] [2022-01-11 05:41:25,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801844588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:25,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:25,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:41:25,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686760977] [2022-01-11 05:41:25,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:25,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:41:25,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:25,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:41:25,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:41:25,670 INFO L87 Difference]: Start difference. First operand 479 states and 804 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) [2022-01-11 05:41:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:25,916 INFO L93 Difference]: Finished difference Result 2392 states and 4008 transitions. [2022-01-11 05:41:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:25,917 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 [2022-01-11 05:41:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:25,925 INFO L225 Difference]: With dead ends: 2392 [2022-01-11 05:41:25,925 INFO L226 Difference]: Without dead ends: 2196 [2022-01-11 05:41:25,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:41:25,927 INFO L933 BasicCegarLoop]: 1189 mSDtfsCounter, 4249 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4249 SdHoareTripleChecker+Valid, 5533 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:25,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4249 Valid, 5533 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2022-01-11 05:41:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 873. [2022-01-11 05:41:25,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.6865671641791045) internal successors, (1469), 872 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1469 transitions. [2022-01-11 05:41:25,986 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1469 transitions. Word has length 62 [2022-01-11 05:41:25,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:25,987 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1469 transitions. [2022-01-11 05:41:25,988 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) [2022-01-11 05:41:25,988 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1469 transitions. [2022-01-11 05:41:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 05:41:25,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:25,989 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] [2022-01-11 05:41:25,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:41:25,989 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:25,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash -690860257, now seen corresponding path program 1 times [2022-01-11 05:41:25,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:25,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817178925] [2022-01-11 05:41:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:25,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:26,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:26,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817178925] [2022-01-11 05:41:26,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817178925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:26,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:26,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:41:26,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830851246] [2022-01-11 05:41:26,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:26,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:41:26,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:26,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:41:26,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:41:26,125 INFO L87 Difference]: Start difference. First operand 873 states and 1469 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:26,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:26,415 INFO L93 Difference]: Finished difference Result 4247 states and 7133 transitions. [2022-01-11 05:41:26,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:26,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 05:41:26,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:26,429 INFO L225 Difference]: With dead ends: 4247 [2022-01-11 05:41:26,429 INFO L226 Difference]: Without dead ends: 3928 [2022-01-11 05:41:26,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:41:26,432 INFO L933 BasicCegarLoop]: 1108 mSDtfsCounter, 4259 mSDsluCounter, 3424 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4259 SdHoareTripleChecker+Valid, 4532 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:26,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4259 Valid, 4532 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:26,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2022-01-11 05:41:26,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 1638. [2022-01-11 05:41:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1636 states have (on average 1.6925427872860637) internal successors, (2769), 1637 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2769 transitions. [2022-01-11 05:41:26,578 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2769 transitions. Word has length 63 [2022-01-11 05:41:26,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:26,579 INFO L470 AbstractCegarLoop]: Abstraction has 1638 states and 2769 transitions. [2022-01-11 05:41:26,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:26,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2769 transitions. [2022-01-11 05:41:26,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 05:41:26,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:26,581 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] [2022-01-11 05:41:26,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:41:26,581 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:26,582 INFO L85 PathProgramCache]: Analyzing trace with hash -232224332, now seen corresponding path program 1 times [2022-01-11 05:41:26,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:26,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109550872] [2022-01-11 05:41:26,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:26,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:26,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:26,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109550872] [2022-01-11 05:41:26,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109550872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:26,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:26,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:41:26,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448634039] [2022-01-11 05:41:26,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:26,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:26,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:26,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:26,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:26,652 INFO L87 Difference]: Start difference. First operand 1638 states and 2769 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:26,883 INFO L93 Difference]: Finished difference Result 4726 states and 8047 transitions. [2022-01-11 05:41:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:41:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 05:41:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:26,893 INFO L225 Difference]: With dead ends: 4726 [2022-01-11 05:41:26,893 INFO L226 Difference]: Without dead ends: 3138 [2022-01-11 05:41:26,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:41:26,895 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 2349 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 2268 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 [2022-01-11 05:41:26,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2349 Valid, 2268 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:26,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2022-01-11 05:41:26,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 1638. [2022-01-11 05:41:26,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1636 states have (on average 1.691320293398533) internal successors, (2767), 1637 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2767 transitions. [2022-01-11 05:41:26,996 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2767 transitions. Word has length 63 [2022-01-11 05:41:26,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:26,996 INFO L470 AbstractCegarLoop]: Abstraction has 1638 states and 2767 transitions. [2022-01-11 05:41:26,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2767 transitions. [2022-01-11 05:41:27,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 05:41:27,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:27,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:27,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:41:27,003 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:27,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:27,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1544412440, now seen corresponding path program 1 times [2022-01-11 05:41:27,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:27,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323080882] [2022-01-11 05:41:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:27,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:27,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:27,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323080882] [2022-01-11 05:41:27,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323080882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:27,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:27,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:41:27,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058566766] [2022-01-11 05:41:27,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:27,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:27,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:27,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:27,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:27,076 INFO L87 Difference]: Start difference. First operand 1638 states and 2767 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:27,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:27,371 INFO L93 Difference]: Finished difference Result 4724 states and 8039 transitions. [2022-01-11 05:41:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:41:27,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-11 05:41:27,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:27,381 INFO L225 Difference]: With dead ends: 4724 [2022-01-11 05:41:27,382 INFO L226 Difference]: Without dead ends: 3146 [2022-01-11 05:41:27,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:41:27,386 INFO L933 BasicCegarLoop]: 1516 mSDtfsCounter, 2334 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:27,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2334 Valid, 2300 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:27,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2022-01-11 05:41:27,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 1638. [2022-01-11 05:41:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1636 states have (on average 1.6900977995110025) internal successors, (2765), 1637 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:27,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2765 transitions. [2022-01-11 05:41:27,494 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2765 transitions. Word has length 64 [2022-01-11 05:41:27,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:27,494 INFO L470 AbstractCegarLoop]: Abstraction has 1638 states and 2765 transitions. [2022-01-11 05:41:27,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2765 transitions. [2022-01-11 05:41:27,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 05:41:27,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:27,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:27,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:41:27,499 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:27,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash 361065143, now seen corresponding path program 1 times [2022-01-11 05:41:27,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:27,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991504379] [2022-01-11 05:41:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:27,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:27,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:27,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991504379] [2022-01-11 05:41:27,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991504379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:27,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:27,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:41:27,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591894544] [2022-01-11 05:41:27,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:27,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:27,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:27,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:27,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:27,604 INFO L87 Difference]: Start difference. First operand 1638 states and 2765 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:27,835 INFO L93 Difference]: Finished difference Result 3327 states and 5456 transitions. [2022-01-11 05:41:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:41:27,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-11 05:41:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:27,845 INFO L225 Difference]: With dead ends: 3327 [2022-01-11 05:41:27,845 INFO L226 Difference]: Without dead ends: 2781 [2022-01-11 05:41:27,847 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 [2022-01-11 05:41:27,847 INFO L933 BasicCegarLoop]: 1213 mSDtfsCounter, 1154 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 3558 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:27,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 3558 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2022-01-11 05:41:27,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 1692. [2022-01-11 05:41:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1690 states have (on average 1.6828402366863906) internal successors, (2844), 1691 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2844 transitions. [2022-01-11 05:41:27,980 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2844 transitions. Word has length 64 [2022-01-11 05:41:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:27,980 INFO L470 AbstractCegarLoop]: Abstraction has 1692 states and 2844 transitions. [2022-01-11 05:41:27,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2844 transitions. [2022-01-11 05:41:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 05:41:27,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:27,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:27,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:41:27,985 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:27,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:27,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1261367936, now seen corresponding path program 1 times [2022-01-11 05:41:27,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:27,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342733189] [2022-01-11 05:41:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:27,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:28,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:28,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342733189] [2022-01-11 05:41:28,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342733189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:28,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:28,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:28,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295377507] [2022-01-11 05:41:28,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:28,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:41:28,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:28,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:41:28,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:41:28,082 INFO L87 Difference]: Start difference. First operand 1692 states and 2844 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:28,193 INFO L93 Difference]: Finished difference Result 2098 states and 3472 transitions. [2022-01-11 05:41:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:41:28,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-11 05:41:28,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:28,201 INFO L225 Difference]: With dead ends: 2098 [2022-01-11 05:41:28,201 INFO L226 Difference]: Without dead ends: 1692 [2022-01-11 05:41:28,203 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 [2022-01-11 05:41:28,203 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 587 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:28,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 1798 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-01-11 05:41:28,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1692. [2022-01-11 05:41:28,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1690 states have (on average 1.6798816568047337) internal successors, (2839), 1691 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2839 transitions. [2022-01-11 05:41:28,341 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2839 transitions. Word has length 64 [2022-01-11 05:41:28,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:28,341 INFO L470 AbstractCegarLoop]: Abstraction has 1692 states and 2839 transitions. [2022-01-11 05:41:28,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:28,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2839 transitions. [2022-01-11 05:41:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 05:41:28,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:28,344 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] [2022-01-11 05:41:28,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:41:28,344 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:28,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:28,344 INFO L85 PathProgramCache]: Analyzing trace with hash 153753121, now seen corresponding path program 1 times [2022-01-11 05:41:28,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:28,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014922546] [2022-01-11 05:41:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:28,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:28,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:28,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014922546] [2022-01-11 05:41:28,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014922546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:28,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:28,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:28,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623267161] [2022-01-11 05:41:28,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:28,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:28,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:28,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:28,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:28,445 INFO L87 Difference]: Start difference. First operand 1692 states and 2839 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2022-01-11 05:41:28,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:28,948 INFO L93 Difference]: Finished difference Result 3980 states and 6241 transitions. [2022-01-11 05:41:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:28,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 [2022-01-11 05:41:28,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:28,959 INFO L225 Difference]: With dead ends: 3980 [2022-01-11 05:41:28,959 INFO L226 Difference]: Without dead ends: 3590 [2022-01-11 05:41:28,961 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 [2022-01-11 05:41:28,961 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 2166 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 2879 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 [2022-01-11 05:41:28,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2166 Valid, 2879 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:28,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2022-01-11 05:41:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 2097. [2022-01-11 05:41:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 2095 states have (on average 1.6482100238663484) internal successors, (3453), 2096 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 3453 transitions. [2022-01-11 05:41:29,167 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 3453 transitions. Word has length 67 [2022-01-11 05:41:29,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:29,167 INFO L470 AbstractCegarLoop]: Abstraction has 2097 states and 3453 transitions. [2022-01-11 05:41:29,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2022-01-11 05:41:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 3453 transitions. [2022-01-11 05:41:29,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 05:41:29,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:29,169 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] [2022-01-11 05:41:29,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:41:29,170 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:29,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:29,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1810090882, now seen corresponding path program 1 times [2022-01-11 05:41:29,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:29,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083687408] [2022-01-11 05:41:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:29,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:29,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:29,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083687408] [2022-01-11 05:41:29,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083687408] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:29,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:29,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:29,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142352131] [2022-01-11 05:41:29,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:29,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:29,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:29,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:29,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:29,264 INFO L87 Difference]: Start difference. First operand 2097 states and 3453 transitions. Second operand has 5 states, 5 states have (on average 13.6) 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) [2022-01-11 05:41:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:29,750 INFO L93 Difference]: Finished difference Result 5017 states and 7773 transitions. [2022-01-11 05:41:29,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:29,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) 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 [2022-01-11 05:41:29,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:29,759 INFO L225 Difference]: With dead ends: 5017 [2022-01-11 05:41:29,759 INFO L226 Difference]: Without dead ends: 4258 [2022-01-11 05:41:29,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:41:29,761 INFO L933 BasicCegarLoop]: 965 mSDtfsCounter, 1817 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:29,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1817 Valid, 3049 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2022-01-11 05:41:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 2430. [2022-01-11 05:41:29,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2428 states have (on average 1.6227347611202636) internal successors, (3940), 2429 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 3940 transitions. [2022-01-11 05:41:29,986 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 3940 transitions. Word has length 68 [2022-01-11 05:41:29,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:29,986 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 3940 transitions. [2022-01-11 05:41:29,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) 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) [2022-01-11 05:41:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 3940 transitions. [2022-01-11 05:41:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 05:41:29,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:29,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:29,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:41:29,990 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:29,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:29,990 INFO L85 PathProgramCache]: Analyzing trace with hash -358699638, now seen corresponding path program 1 times [2022-01-11 05:41:29,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:29,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160909637] [2022-01-11 05:41:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:29,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:30,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:30,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160909637] [2022-01-11 05:41:30,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160909637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:30,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:30,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:30,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273928101] [2022-01-11 05:41:30,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:30,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:41:30,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:30,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:41:30,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:41:30,059 INFO L87 Difference]: Start difference. First operand 2430 states and 3940 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:30,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:30,405 INFO L93 Difference]: Finished difference Result 4262 states and 6677 transitions. [2022-01-11 05:41:30,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:41:30,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-11 05:41:30,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:30,412 INFO L225 Difference]: With dead ends: 4262 [2022-01-11 05:41:30,412 INFO L226 Difference]: Without dead ends: 3104 [2022-01-11 05:41:30,414 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 [2022-01-11 05:41:30,414 INFO L933 BasicCegarLoop]: 994 mSDtfsCounter, 525 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:30,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 2772 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:30,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2022-01-11 05:41:30,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2442. [2022-01-11 05:41:30,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2440 states have (on average 1.6188524590163935) internal successors, (3950), 2441 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3950 transitions. [2022-01-11 05:41:30,661 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3950 transitions. Word has length 81 [2022-01-11 05:41:30,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:30,661 INFO L470 AbstractCegarLoop]: Abstraction has 2442 states and 3950 transitions. [2022-01-11 05:41:30,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:30,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3950 transitions. [2022-01-11 05:41:30,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 05:41:30,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:30,664 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] [2022-01-11 05:41:30,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:41:30,665 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:30,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:30,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1225144767, now seen corresponding path program 1 times [2022-01-11 05:41:30,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:30,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628230120] [2022-01-11 05:41:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:30,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:30,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:30,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628230120] [2022-01-11 05:41:30,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628230120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:30,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:30,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:30,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018950514] [2022-01-11 05:41:30,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:30,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:30,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:30,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:30,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:30,757 INFO L87 Difference]: Start difference. First operand 2442 states and 3950 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:31,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:31,505 INFO L93 Difference]: Finished difference Result 7106 states and 10806 transitions. [2022-01-11 05:41:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:31,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-11 05:41:31,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:31,517 INFO L225 Difference]: With dead ends: 7106 [2022-01-11 05:41:31,517 INFO L226 Difference]: Without dead ends: 5846 [2022-01-11 05:41:31,520 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 [2022-01-11 05:41:31,520 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 1922 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:31,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 3009 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:31,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2022-01-11 05:41:31,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 3711. [2022-01-11 05:41:31,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3711 states, 3709 states have (on average 1.5810191426260447) internal successors, (5864), 3710 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:31,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 5864 transitions. [2022-01-11 05:41:31,921 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 5864 transitions. Word has length 82 [2022-01-11 05:41:31,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:31,921 INFO L470 AbstractCegarLoop]: Abstraction has 3711 states and 5864 transitions. [2022-01-11 05:41:31,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:31,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 5864 transitions. [2022-01-11 05:41:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 05:41:31,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:31,925 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] [2022-01-11 05:41:31,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:41:31,926 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:31,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:31,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1126934294, now seen corresponding path program 1 times [2022-01-11 05:41:31,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:31,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607938623] [2022-01-11 05:41:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:31,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:32,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:32,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607938623] [2022-01-11 05:41:32,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607938623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:32,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:32,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:32,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234359808] [2022-01-11 05:41:32,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:32,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:32,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:32,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:32,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:32,024 INFO L87 Difference]: Start difference. First operand 3711 states and 5864 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:33,035 INFO L93 Difference]: Finished difference Result 9169 states and 13860 transitions. [2022-01-11 05:41:33,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:33,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-11 05:41:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:33,049 INFO L225 Difference]: With dead ends: 9169 [2022-01-11 05:41:33,050 INFO L226 Difference]: Without dead ends: 6718 [2022-01-11 05:41:33,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:41:33,054 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 1637 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:33,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1637 Valid, 3152 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6718 states. [2022-01-11 05:41:33,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6718 to 3887. [2022-01-11 05:41:33,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3887 states, 3885 states have (on average 1.576061776061776) internal successors, (6123), 3886 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3887 states to 3887 states and 6123 transitions. [2022-01-11 05:41:33,482 INFO L78 Accepts]: Start accepts. Automaton has 3887 states and 6123 transitions. Word has length 83 [2022-01-11 05:41:33,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:33,482 INFO L470 AbstractCegarLoop]: Abstraction has 3887 states and 6123 transitions. [2022-01-11 05:41:33,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3887 states and 6123 transitions. [2022-01-11 05:41:33,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 05:41:33,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:33,486 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] [2022-01-11 05:41:33,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 05:41:33,486 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:33,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:33,486 INFO L85 PathProgramCache]: Analyzing trace with hash -584342271, now seen corresponding path program 1 times [2022-01-11 05:41:33,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:33,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325304768] [2022-01-11 05:41:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:33,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:33,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:33,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325304768] [2022-01-11 05:41:33,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325304768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:33,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:33,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 05:41:33,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994289500] [2022-01-11 05:41:33,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:33,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:41:33,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:33,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:41:33,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:41:33,589 INFO L87 Difference]: Start difference. First operand 3887 states and 6123 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:38,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:38,631 INFO L93 Difference]: Finished difference Result 30586 states and 44502 transitions. [2022-01-11 05:41:38,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-11 05:41:38,631 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-11 05:41:38,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:38,686 INFO L225 Difference]: With dead ends: 30586 [2022-01-11 05:41:38,686 INFO L226 Difference]: Without dead ends: 28199 [2022-01-11 05:41:38,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=750, Unknown=0, NotChecked=0, Total=1056 [2022-01-11 05:41:38,700 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 6216 mSDsluCounter, 5775 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6216 SdHoareTripleChecker+Valid, 6773 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:38,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6216 Valid, 6773 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:41:38,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28199 states. [2022-01-11 05:41:39,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28199 to 6742. [2022-01-11 05:41:39,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6742 states, 6740 states have (on average 1.5467359050445104) internal successors, (10425), 6741 states have internal predecessors, (10425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6742 states to 6742 states and 10425 transitions. [2022-01-11 05:41:39,823 INFO L78 Accepts]: Start accepts. Automaton has 6742 states and 10425 transitions. Word has length 84 [2022-01-11 05:41:39,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:39,823 INFO L470 AbstractCegarLoop]: Abstraction has 6742 states and 10425 transitions. [2022-01-11 05:41:39,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 6742 states and 10425 transitions. [2022-01-11 05:41:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 05:41:39,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:39,829 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] [2022-01-11 05:41:39,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 05:41:39,829 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:39,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:39,829 INFO L85 PathProgramCache]: Analyzing trace with hash 566925403, now seen corresponding path program 1 times [2022-01-11 05:41:39,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:39,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256134977] [2022-01-11 05:41:39,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:39,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:39,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:39,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256134977] [2022-01-11 05:41:39,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256134977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:39,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:39,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 05:41:39,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860740097] [2022-01-11 05:41:39,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:39,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:41:39,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:41:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:41:39,962 INFO L87 Difference]: Start difference. First operand 6742 states and 10425 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:51,056 INFO L93 Difference]: Finished difference Result 61778 states and 92638 transitions. [2022-01-11 05:41:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-11 05:41:51,056 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-11 05:41:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:51,169 INFO L225 Difference]: With dead ends: 61778 [2022-01-11 05:41:51,170 INFO L226 Difference]: Without dead ends: 57142 [2022-01-11 05:41:51,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=785, Unknown=0, NotChecked=0, Total=1122 [2022-01-11 05:41:51,190 INFO L933 BasicCegarLoop]: 917 mSDtfsCounter, 8809 mSDsluCounter, 7753 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8809 SdHoareTripleChecker+Valid, 8670 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:51,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8809 Valid, 8670 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 05:41:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57142 states. [2022-01-11 05:41:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57142 to 18554. [2022-01-11 05:41:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18554 states, 18552 states have (on average 1.5358451918930573) internal successors, (28493), 18553 states have internal predecessors, (28493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:54,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18554 states to 18554 states and 28493 transitions. [2022-01-11 05:41:54,838 INFO L78 Accepts]: Start accepts. Automaton has 18554 states and 28493 transitions. Word has length 85 [2022-01-11 05:41:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:54,838 INFO L470 AbstractCegarLoop]: Abstraction has 18554 states and 28493 transitions. [2022-01-11 05:41:54,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:54,838 INFO L276 IsEmpty]: Start isEmpty. Operand 18554 states and 28493 transitions. [2022-01-11 05:41:54,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 05:41:54,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:54,852 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] [2022-01-11 05:41:54,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 05:41:54,853 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:54,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:54,853 INFO L85 PathProgramCache]: Analyzing trace with hash -7511687, now seen corresponding path program 1 times [2022-01-11 05:41:54,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:54,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231769758] [2022-01-11 05:41:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:54,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:54,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:54,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231769758] [2022-01-11 05:41:54,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231769758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:54,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:54,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:54,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216445189] [2022-01-11 05:41:54,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:54,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:41:54,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:54,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:41:54,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:41:54,938 INFO L87 Difference]: Start difference. First operand 18554 states and 28493 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:01,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:01,945 INFO L93 Difference]: Finished difference Result 46480 states and 69803 transitions. [2022-01-11 05:42:01,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:42:01,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-11 05:42:01,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:02,000 INFO L225 Difference]: With dead ends: 46480 [2022-01-11 05:42:02,000 INFO L226 Difference]: Without dead ends: 32991 [2022-01-11 05:42:02,020 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 [2022-01-11 05:42:02,020 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 577 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:02,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 2837 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:02,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32991 states. [2022-01-11 05:42:05,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32991 to 18658. [2022-01-11 05:42:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18658 states, 18656 states have (on average 1.5324292452830188) internal successors, (28589), 18657 states have internal predecessors, (28589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18658 states to 18658 states and 28589 transitions. [2022-01-11 05:42:05,372 INFO L78 Accepts]: Start accepts. Automaton has 18658 states and 28589 transitions. Word has length 85 [2022-01-11 05:42:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:05,373 INFO L470 AbstractCegarLoop]: Abstraction has 18658 states and 28589 transitions. [2022-01-11 05:42:05,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:05,373 INFO L276 IsEmpty]: Start isEmpty. Operand 18658 states and 28589 transitions. [2022-01-11 05:42:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 05:42:05,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:05,387 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] [2022-01-11 05:42:05,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 05:42:05,388 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:05,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1366660876, now seen corresponding path program 1 times [2022-01-11 05:42:05,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:05,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924305929] [2022-01-11 05:42:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:05,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:05,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:05,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924305929] [2022-01-11 05:42:05,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924305929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:05,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:05,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 05:42:05,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611102631] [2022-01-11 05:42:05,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:05,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 05:42:05,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:05,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 05:42:05,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:42:05,477 INFO L87 Difference]: Start difference. First operand 18658 states and 28589 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:10,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:10,900 INFO L93 Difference]: Finished difference Result 39664 states and 59228 transitions. [2022-01-11 05:42:10,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 05:42:10,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-11 05:42:10,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:10,938 INFO L225 Difference]: With dead ends: 39664 [2022-01-11 05:42:10,938 INFO L226 Difference]: Without dead ends: 24375 [2022-01-11 05:42:10,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-11 05:42:10,958 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 1647 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 3661 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:10,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1647 Valid, 3661 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:42:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24375 states. [2022-01-11 05:42:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24375 to 18658. [2022-01-11 05:42:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18658 states, 18656 states have (on average 1.5295347341337908) internal successors, (28535), 18657 states have internal predecessors, (28535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18658 states to 18658 states and 28535 transitions. [2022-01-11 05:42:14,620 INFO L78 Accepts]: Start accepts. Automaton has 18658 states and 28535 transitions. Word has length 85 [2022-01-11 05:42:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:14,620 INFO L470 AbstractCegarLoop]: Abstraction has 18658 states and 28535 transitions. [2022-01-11 05:42:14,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 18658 states and 28535 transitions. [2022-01-11 05:42:14,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 05:42:14,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:14,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:14,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 05:42:14,635 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:14,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:14,635 INFO L85 PathProgramCache]: Analyzing trace with hash 744629493, now seen corresponding path program 1 times [2022-01-11 05:42:14,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:14,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552720703] [2022-01-11 05:42:14,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:14,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:14,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:14,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552720703] [2022-01-11 05:42:14,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552720703] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:14,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:14,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:42:14,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368061384] [2022-01-11 05:42:14,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:14,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:14,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:14,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:14,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:14,708 INFO L87 Difference]: Start difference. First operand 18658 states and 28535 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:23,822 INFO L93 Difference]: Finished difference Result 50261 states and 74026 transitions. [2022-01-11 05:42:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 05:42:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-11 05:42:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:23,882 INFO L225 Difference]: With dead ends: 50261 [2022-01-11 05:42:23,883 INFO L226 Difference]: Without dead ends: 36180 [2022-01-11 05:42:23,899 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 [2022-01-11 05:42:23,900 INFO L933 BasicCegarLoop]: 1218 mSDtfsCounter, 671 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:23,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 4003 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:23,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36180 states. [2022-01-11 05:42:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36180 to 19054. [2022-01-11 05:42:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19054 states, 19052 states have (on average 1.5211526348939743) internal successors, (28981), 19053 states have internal predecessors, (28981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19054 states to 19054 states and 28981 transitions. [2022-01-11 05:42:27,718 INFO L78 Accepts]: Start accepts. Automaton has 19054 states and 28981 transitions. Word has length 85 [2022-01-11 05:42:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:27,719 INFO L470 AbstractCegarLoop]: Abstraction has 19054 states and 28981 transitions. [2022-01-11 05:42:27,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:27,719 INFO L276 IsEmpty]: Start isEmpty. Operand 19054 states and 28981 transitions. [2022-01-11 05:42:27,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 05:42:27,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:27,733 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] [2022-01-11 05:42:27,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 05:42:27,733 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:27,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:27,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1099118714, now seen corresponding path program 1 times [2022-01-11 05:42:27,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:27,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933203785] [2022-01-11 05:42:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:27,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:27,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:27,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933203785] [2022-01-11 05:42:27,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933203785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:27,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:27,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:42:27,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429018776] [2022-01-11 05:42:27,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:27,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:42:27,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:27,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:42:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:42:27,803 INFO L87 Difference]: Start difference. First operand 19054 states and 28981 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)