/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_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:14:48,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:14:48,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:14:48,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:14:48,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:14:48,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:14:48,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:14:48,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:14:48,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:14:48,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:14:48,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:14:48,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:14:48,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:14:48,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:14:48,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:14:48,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:14:48,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:14:48,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:14:48,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:14:48,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:14:48,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:14:48,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:14:48,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:14:48,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:14:48,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:14:48,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:14:48,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:14:48,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:14:48,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:14:48,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:14:48,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:14:48,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:14:48,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:14:48,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:14:48,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:14:48,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:14:48,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:14:48,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:14:48,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:14:48,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:14:48,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:14:48,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:14:48,549 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:14:48,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:14:48,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:14:48,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:14:48,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:14:48,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:14:48,552 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:14:48,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:14:48,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:14:48,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:14:48,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:14:48,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:14:48,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:14:48,552 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:14:48,552 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:14:48,553 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:14:48,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:14:48,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:14:48,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:14:48,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:14:48,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:14:48,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:14:48,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:14:48,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:14:48,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:14:48,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:14:48,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:14:48,554 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:14:48,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:14:48,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:14:48,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:14:48,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:14:48,554 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:14:48,554 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:14:48,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:14:48,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:14:48,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:14:48,720 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:14:48,722 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:14:48,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product19.cil.c [2022-01-10 12:14:48,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd918c24/845edfdddce34040ba2864a109348513/FLAGce7d7fa2e [2022-01-10 12:14:49,200 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:14:49,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product19.cil.c [2022-01-10 12:14:49,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd918c24/845edfdddce34040ba2864a109348513/FLAGce7d7fa2e [2022-01-10 12:14:49,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd918c24/845edfdddce34040ba2864a109348513 [2022-01-10 12:14:49,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:14:49,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:14:49,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:14:49,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:14:49,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:14:49,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:14:49" (1/1) ... [2022-01-10 12:14:49,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aad6c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49, skipping insertion in model container [2022-01-10 12:14:49,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:14:49" (1/1) ... [2022-01-10 12:14:49,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:14:49,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:14:49,540 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_spec3_product19.cil.c[8336,8349] [2022-01-10 12:14:49,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:14:49,711 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:14:49,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:14:49,749 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_spec3_product19.cil.c[8336,8349] [2022-01-10 12:14:49,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:14:49,808 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:14:49,823 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_spec3_product19.cil.c[8336,8349] [2022-01-10 12:14:49,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:14:49,885 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:14:49,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49 WrapperNode [2022-01-10 12:14:49,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:14:49,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:14:49,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:14:49,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:14:49,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49" (1/1) ... [2022-01-10 12:14:49,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49" (1/1) ... [2022-01-10 12:14:49,960 INFO L137 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 117, calls inlined = 159, statements flattened = 2395 [2022-01-10 12:14:49,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:14:49,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:14:49,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:14:49,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:14:49,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49" (1/1) ... [2022-01-10 12:14:49,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49" (1/1) ... [2022-01-10 12:14:49,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49" (1/1) ... [2022-01-10 12:14:49,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49" (1/1) ... [2022-01-10 12:14:49,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49" (1/1) ... [2022-01-10 12:14:50,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49" (1/1) ... [2022-01-10 12:14:50,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49" (1/1) ... [2022-01-10 12:14:50,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:14:50,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:14:50,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:14:50,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:14:50,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49" (1/1) ... [2022-01-10 12:14:50,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:14:50,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:14:50,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:14:50,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:14:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:14:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:14:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:14:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:14:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:14:50,327 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:14:50,328 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:14:51,316 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:14:51,330 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:14:51,330 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:14:51,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:14:51 BoogieIcfgContainer [2022-01-10 12:14:51,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:14:51,334 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:14:51,334 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:14:51,335 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:14:51,337 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:14:51" (1/1) ... [2022-01-10 12:14:51,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:14:51 BasicIcfg [2022-01-10 12:14:51,669 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:14:51,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:14:51,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:14:51,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:14:51,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:14:49" (1/4) ... [2022-01-10 12:14:51,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf0f314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:14:51, skipping insertion in model container [2022-01-10 12:14:51,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:14:49" (2/4) ... [2022-01-10 12:14:51,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf0f314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:14:51, skipping insertion in model container [2022-01-10 12:14:51,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:14:51" (3/4) ... [2022-01-10 12:14:51,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf0f314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:14:51, skipping insertion in model container [2022-01-10 12:14:51,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:14:51" (4/4) ... [2022-01-10 12:14:51,675 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product19.cil.cTransformedIcfg [2022-01-10 12:14:51,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:14:51,681 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 12:14:51,726 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:14:51,732 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:14:51,733 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 12:14:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 530 states, 525 states have (on average 1.6857142857142857) internal successors, (885), 529 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:51,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 12:14:51,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:51,767 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] [2022-01-10 12:14:51,767 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:14:51,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:51,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1341972643, now seen corresponding path program 1 times [2022-01-10 12:14:51,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:51,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928321190] [2022-01-10 12:14:51,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:51,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:52,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:52,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928321190] [2022-01-10 12:14:52,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928321190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:52,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:52,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:14:52,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522406014] [2022-01-10 12:14:52,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:52,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:14:52,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:52,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:14:52,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:14:52,158 INFO L87 Difference]: Start difference. First operand has 530 states, 525 states have (on average 1.6857142857142857) internal successors, (885), 529 states have internal predecessors, (885), 0 states have call successors, (0), 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 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:52,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:52,204 INFO L93 Difference]: Finished difference Result 797 states and 1308 transitions. [2022-01-10 12:14:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:14:52,225 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-10 12:14:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:52,241 INFO L225 Difference]: With dead ends: 797 [2022-01-10 12:14:52,241 INFO L226 Difference]: Without dead ends: 448 [2022-01-10 12:14:52,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:14:52,248 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:52,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-10 12:14:52,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-01-10 12:14:52,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 444 states have (on average 1.695945945945946) internal successors, (753), 447 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:52,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 753 transitions. [2022-01-10 12:14:52,304 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 753 transitions. Word has length 53 [2022-01-10 12:14:52,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:52,304 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 753 transitions. [2022-01-10 12:14:52,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:52,304 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 753 transitions. [2022-01-10 12:14:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 12:14:52,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:52,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:52,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:14:52,306 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:14:52,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash 369177041, now seen corresponding path program 1 times [2022-01-10 12:14:52,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:52,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986652227] [2022-01-10 12:14:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:52,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:52,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:52,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:52,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986652227] [2022-01-10 12:14:52,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986652227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:52,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:52,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:14:52,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667092347] [2022-01-10 12:14:52,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:52,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:14:52,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:52,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:14:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:14:52,488 INFO L87 Difference]: Start difference. First operand 448 states and 753 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:52,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:52,572 INFO L93 Difference]: Finished difference Result 877 states and 1478 transitions. [2022-01-10 12:14:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:14:52,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 12:14:52,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:52,576 INFO L225 Difference]: With dead ends: 877 [2022-01-10 12:14:52,576 INFO L226 Difference]: Without dead ends: 448 [2022-01-10 12:14:52,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:14:52,579 INFO L933 BasicCegarLoop]: 734 mSDtfsCounter, 728 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:52,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 747 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:52,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-10 12:14:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-01-10 12:14:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 444 states have (on average 1.6914414414414414) internal successors, (751), 447 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 751 transitions. [2022-01-10 12:14:52,599 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 751 transitions. Word has length 54 [2022-01-10 12:14:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:52,599 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 751 transitions. [2022-01-10 12:14:52,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 751 transitions. [2022-01-10 12:14:52,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 12:14:52,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:52,601 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] [2022-01-10 12:14:52,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:14:52,601 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:14:52,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:52,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1761110319, now seen corresponding path program 1 times [2022-01-10 12:14:52,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:52,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775957984] [2022-01-10 12:14:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:52,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:52,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:52,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775957984] [2022-01-10 12:14:52,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775957984] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:52,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:52,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:52,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607879803] [2022-01-10 12:14:52,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:52,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:52,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:52,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:52,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:52,779 INFO L87 Difference]: Start difference. First operand 448 states and 751 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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) [2022-01-10 12:14:52,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:52,946 INFO L93 Difference]: Finished difference Result 2108 states and 3551 transitions. [2022-01-10 12:14:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:14:52,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 [2022-01-10 12:14:52,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:52,953 INFO L225 Difference]: With dead ends: 2108 [2022-01-10 12:14:52,954 INFO L226 Difference]: Without dead ends: 1684 [2022-01-10 12:14:52,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:14:52,960 INFO L933 BasicCegarLoop]: 1425 mSDtfsCounter, 3538 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3538 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:52,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3538 Valid, 3550 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:52,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2022-01-10 12:14:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 448. [2022-01-10 12:14:52,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 444 states have (on average 1.6891891891891893) internal successors, (750), 447 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:52,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 750 transitions. [2022-01-10 12:14:52,987 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 750 transitions. Word has length 56 [2022-01-10 12:14:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:52,988 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 750 transitions. [2022-01-10 12:14:52,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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) [2022-01-10 12:14:52,988 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 750 transitions. [2022-01-10 12:14:52,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 12:14:52,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:52,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:52,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:14:52,992 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:14:52,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:52,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1899233533, now seen corresponding path program 1 times [2022-01-10 12:14:52,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:52,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720843789] [2022-01-10 12:14:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:52,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:53,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:53,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720843789] [2022-01-10 12:14:53,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720843789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:53,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:53,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:14:53,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428035947] [2022-01-10 12:14:53,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:53,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:14:53,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:53,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:14:53,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:14:53,080 INFO L87 Difference]: Start difference. First operand 448 states and 750 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:53,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:53,115 INFO L93 Difference]: Finished difference Result 881 states and 1478 transitions. [2022-01-10 12:14:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:14:53,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 12:14:53,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:53,117 INFO L225 Difference]: With dead ends: 881 [2022-01-10 12:14:53,117 INFO L226 Difference]: Without dead ends: 462 [2022-01-10 12:14:53,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:14:53,118 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 729 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:53,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 786 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:53,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-01-10 12:14:53,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 448. [2022-01-10 12:14:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 444 states have (on average 1.686936936936937) internal successors, (749), 447 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 749 transitions. [2022-01-10 12:14:53,136 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 749 transitions. Word has length 57 [2022-01-10 12:14:53,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:53,136 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 749 transitions. [2022-01-10 12:14:53,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:53,136 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 749 transitions. [2022-01-10 12:14:53,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:14:53,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:53,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:53,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:14:53,138 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:14:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:53,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1893284944, now seen corresponding path program 1 times [2022-01-10 12:14:53,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:53,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476556787] [2022-01-10 12:14:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:53,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:53,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:53,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476556787] [2022-01-10 12:14:53,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476556787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:53,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:53,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:53,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439084664] [2022-01-10 12:14:53,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:53,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:53,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:53,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:53,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:53,261 INFO L87 Difference]: Start difference. First operand 448 states and 749 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) [2022-01-10 12:14:53,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:53,392 INFO L93 Difference]: Finished difference Result 1278 states and 2147 transitions. [2022-01-10 12:14:53,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:14:53,393 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 [2022-01-10 12:14:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:53,396 INFO L225 Difference]: With dead ends: 1278 [2022-01-10 12:14:53,396 INFO L226 Difference]: Without dead ends: 864 [2022-01-10 12:14:53,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:14:53,397 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 3461 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3461 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:53,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3461 Valid, 1530 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-01-10 12:14:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 448. [2022-01-10 12:14:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 444 states have (on average 1.6824324324324325) internal successors, (747), 447 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:53,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 747 transitions. [2022-01-10 12:14:53,425 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 747 transitions. Word has length 58 [2022-01-10 12:14:53,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:53,428 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 747 transitions. [2022-01-10 12:14:53,429 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) [2022-01-10 12:14:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 747 transitions. [2022-01-10 12:14:53,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:14:53,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:53,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:53,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:14:53,430 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:14:53,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:53,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1210067603, now seen corresponding path program 1 times [2022-01-10 12:14:53,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:53,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500137998] [2022-01-10 12:14:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:53,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:53,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:53,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500137998] [2022-01-10 12:14:53,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500137998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:53,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:53,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:14:53,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676911007] [2022-01-10 12:14:53,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:53,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:14:53,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:53,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:14:53,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:14:53,527 INFO L87 Difference]: Start difference. First operand 448 states and 747 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:53,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:53,789 INFO L93 Difference]: Finished difference Result 2190 states and 3633 transitions. [2022-01-10 12:14:53,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:14:53,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 12:14:53,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:53,796 INFO L225 Difference]: With dead ends: 2190 [2022-01-10 12:14:53,796 INFO L226 Difference]: Without dead ends: 2020 [2022-01-10 12:14:53,797 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 [2022-01-10 12:14:53,798 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 3866 mSDsluCounter, 3928 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3866 SdHoareTripleChecker+Valid, 4970 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 [2022-01-10 12:14:53,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3866 Valid, 4970 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:53,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2022-01-10 12:14:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 831. [2022-01-10 12:14:53,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 827 states have (on average 1.686819830713422) internal successors, (1395), 830 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1395 transitions. [2022-01-10 12:14:53,860 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1395 transitions. Word has length 60 [2022-01-10 12:14:53,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:53,861 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1395 transitions. [2022-01-10 12:14:53,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1395 transitions. [2022-01-10 12:14:53,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:14:53,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:53,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:53,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:14:53,862 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:14:53,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:53,863 INFO L85 PathProgramCache]: Analyzing trace with hash 381009517, now seen corresponding path program 1 times [2022-01-10 12:14:53,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:53,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873964844] [2022-01-10 12:14:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:53,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:53,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:53,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873964844] [2022-01-10 12:14:53,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873964844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:53,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:53,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:14:53,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566419412] [2022-01-10 12:14:53,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:53,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:14:53,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:53,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:14:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:14:53,946 INFO L87 Difference]: Start difference. First operand 831 states and 1395 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:54,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:54,287 INFO L93 Difference]: Finished difference Result 3983 states and 6663 transitions. [2022-01-10 12:14:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:14:54,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 12:14:54,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:54,298 INFO L225 Difference]: With dead ends: 3983 [2022-01-10 12:14:54,298 INFO L226 Difference]: Without dead ends: 3696 [2022-01-10 12:14:54,299 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 [2022-01-10 12:14:54,301 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 3835 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3835 SdHoareTripleChecker+Valid, 4149 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 [2022-01-10 12:14:54,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3835 Valid, 4149 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2022-01-10 12:14:54,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 1574. [2022-01-10 12:14:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1570 states have (on average 1.694904458598726) internal successors, (2661), 1573 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2661 transitions. [2022-01-10 12:14:54,389 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2661 transitions. Word has length 61 [2022-01-10 12:14:54,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:54,391 INFO L470 AbstractCegarLoop]: Abstraction has 1574 states and 2661 transitions. [2022-01-10 12:14:54,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2661 transitions. [2022-01-10 12:14:54,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:14:54,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:54,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:54,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:14:54,393 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:14:54,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash -991301629, now seen corresponding path program 1 times [2022-01-10 12:14:54,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:54,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796622710] [2022-01-10 12:14:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:54,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:54,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:54,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796622710] [2022-01-10 12:14:54,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796622710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:54,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:54,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:54,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129504809] [2022-01-10 12:14:54,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:54,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:54,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:54,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:54,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:54,457 INFO L87 Difference]: Start difference. First operand 1574 states and 2661 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:54,701 INFO L93 Difference]: Finished difference Result 4534 states and 7723 transitions. [2022-01-10 12:14:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:14:54,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 12:14:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:54,711 INFO L225 Difference]: With dead ends: 4534 [2022-01-10 12:14:54,711 INFO L226 Difference]: Without dead ends: 3010 [2022-01-10 12:14:54,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:14:54,715 INFO L933 BasicCegarLoop]: 1397 mSDtfsCounter, 2178 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2178 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:54,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2178 Valid, 2097 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2022-01-10 12:14:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1574. [2022-01-10 12:14:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1570 states have (on average 1.6936305732484076) internal successors, (2659), 1573 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2659 transitions. [2022-01-10 12:14:54,806 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2659 transitions. Word has length 61 [2022-01-10 12:14:54,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:54,806 INFO L470 AbstractCegarLoop]: Abstraction has 1574 states and 2659 transitions. [2022-01-10 12:14:54,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:54,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2659 transitions. [2022-01-10 12:14:54,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:14:54,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:54,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:54,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:14:54,809 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:14:54,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:54,809 INFO L85 PathProgramCache]: Analyzing trace with hash -251989148, now seen corresponding path program 1 times [2022-01-10 12:14:54,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:54,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849896912] [2022-01-10 12:14:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:54,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:54,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:54,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849896912] [2022-01-10 12:14:54,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849896912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:54,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:54,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:54,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230043549] [2022-01-10 12:14:54,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:54,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:54,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:54,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:54,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:54,881 INFO L87 Difference]: Start difference. First operand 1574 states and 2659 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:55,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:55,233 INFO L93 Difference]: Finished difference Result 4516 states and 7217 transitions. [2022-01-10 12:14:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:14:55,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 12:14:55,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:55,246 INFO L225 Difference]: With dead ends: 4516 [2022-01-10 12:14:55,246 INFO L226 Difference]: Without dead ends: 4048 [2022-01-10 12:14:55,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:14:55,248 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 2023 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:55,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2023 Valid, 2937 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2022-01-10 12:14:55,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 2120. [2022-01-10 12:14:55,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2120 states, 2116 states have (on average 1.6620982986767485) internal successors, (3517), 2119 states have internal predecessors, (3517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 3517 transitions. [2022-01-10 12:14:55,480 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 3517 transitions. Word has length 62 [2022-01-10 12:14:55,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:55,481 INFO L470 AbstractCegarLoop]: Abstraction has 2120 states and 3517 transitions. [2022-01-10 12:14:55,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:55,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 3517 transitions. [2022-01-10 12:14:55,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:14:55,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:55,486 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] [2022-01-10 12:14:55,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:14:55,488 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:14:55,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:55,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1594785003, now seen corresponding path program 1 times [2022-01-10 12:14:55,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:55,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482074637] [2022-01-10 12:14:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:55,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:55,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:55,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482074637] [2022-01-10 12:14:55,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482074637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:55,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:55,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:14:55,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835813248] [2022-01-10 12:14:55,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:55,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:14:55,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:55,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:14:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:14:55,583 INFO L87 Difference]: Start difference. First operand 2120 states and 3517 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:55,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:55,840 INFO L93 Difference]: Finished difference Result 3573 states and 5765 transitions. [2022-01-10 12:14:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:14:55,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 12:14:55,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:55,847 INFO L225 Difference]: With dead ends: 3573 [2022-01-10 12:14:55,847 INFO L226 Difference]: Without dead ends: 2653 [2022-01-10 12:14:55,848 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 [2022-01-10 12:14:55,849 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 1714 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 3517 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:55,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1714 Valid, 3517 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2022-01-10 12:14:55,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 2012. [2022-01-10 12:14:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 2008 states have (on average 1.6538844621513944) internal successors, (3321), 2011 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 3321 transitions. [2022-01-10 12:14:55,989 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 3321 transitions. Word has length 63 [2022-01-10 12:14:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:55,989 INFO L470 AbstractCegarLoop]: Abstraction has 2012 states and 3321 transitions. [2022-01-10 12:14:55,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 3321 transitions. [2022-01-10 12:14:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:14:55,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:55,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:55,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:14:55,992 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:14:55,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:55,992 INFO L85 PathProgramCache]: Analyzing trace with hash -44393015, now seen corresponding path program 1 times [2022-01-10 12:14:55,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:55,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806292583] [2022-01-10 12:14:55,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:55,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:56,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:56,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806292583] [2022-01-10 12:14:56,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806292583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:56,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:56,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:14:56,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184319417] [2022-01-10 12:14:56,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:56,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:14:56,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:56,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:14:56,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:14:56,102 INFO L87 Difference]: Start difference. First operand 2012 states and 3321 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:57,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:57,376 INFO L93 Difference]: Finished difference Result 8712 states and 12984 transitions. [2022-01-10 12:14:57,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 12:14:57,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 12:14:57,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:57,411 INFO L225 Difference]: With dead ends: 8712 [2022-01-10 12:14:57,412 INFO L226 Difference]: Without dead ends: 8298 [2022-01-10 12:14:57,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=750, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 12:14:57,415 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 5156 mSDsluCounter, 5290 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 6222 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:57,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5156 Valid, 6222 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:57,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2022-01-10 12:14:57,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 3024. [2022-01-10 12:14:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3024 states, 3020 states have (on average 1.6208609271523178) internal successors, (4895), 3023 states have internal predecessors, (4895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 4895 transitions. [2022-01-10 12:14:57,710 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 4895 transitions. Word has length 64 [2022-01-10 12:14:57,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:57,710 INFO L470 AbstractCegarLoop]: Abstraction has 3024 states and 4895 transitions. [2022-01-10 12:14:57,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 4895 transitions. [2022-01-10 12:14:57,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:14:57,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:57,714 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] [2022-01-10 12:14:57,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:14:57,714 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:14:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:57,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1345630834, now seen corresponding path program 1 times [2022-01-10 12:14:57,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:57,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488854196] [2022-01-10 12:14:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:57,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:57,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:57,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488854196] [2022-01-10 12:14:57,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488854196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:57,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:57,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:14:57,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101471034] [2022-01-10 12:14:57,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:57,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:14:57,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:57,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:14:57,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:14:57,824 INFO L87 Difference]: Start difference. First operand 3024 states and 4895 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:00,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:00,756 INFO L93 Difference]: Finished difference Result 20965 states and 32605 transitions. [2022-01-10 12:15:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 12:15:00,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 12:15:00,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:00,793 INFO L225 Difference]: With dead ends: 20965 [2022-01-10 12:15:00,794 INFO L226 Difference]: Without dead ends: 19671 [2022-01-10 12:15:00,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=785, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 12:15:00,800 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 8382 mSDsluCounter, 6761 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8382 SdHoareTripleChecker+Valid, 7554 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:00,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8382 Valid, 7554 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:15:00,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19671 states. [2022-01-10 12:15:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19671 to 7858. [2022-01-10 12:15:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7858 states, 7854 states have (on average 1.6026228673287497) internal successors, (12587), 7857 states have internal predecessors, (12587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:01,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7858 states to 7858 states and 12587 transitions. [2022-01-10 12:15:01,675 INFO L78 Accepts]: Start accepts. Automaton has 7858 states and 12587 transitions. Word has length 65 [2022-01-10 12:15:01,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:01,675 INFO L470 AbstractCegarLoop]: Abstraction has 7858 states and 12587 transitions. [2022-01-10 12:15:01,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:01,676 INFO L276 IsEmpty]: Start isEmpty. Operand 7858 states and 12587 transitions. [2022-01-10 12:15:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:15:01,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:01,683 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] [2022-01-10 12:15:01,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:15:01,683 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:01,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:01,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1344617940, now seen corresponding path program 1 times [2022-01-10 12:15:01,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:01,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418534987] [2022-01-10 12:15:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:01,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:01,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:01,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418534987] [2022-01-10 12:15:01,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418534987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:01,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:01,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:15:01,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212918058] [2022-01-10 12:15:01,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:01,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:15:01,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:01,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:15:01,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:15:01,838 INFO L87 Difference]: Start difference. First operand 7858 states and 12587 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:06,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:06,013 INFO L93 Difference]: Finished difference Result 24840 states and 36683 transitions. [2022-01-10 12:15:06,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 12:15:06,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 12:15:06,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:06,047 INFO L225 Difference]: With dead ends: 24840 [2022-01-10 12:15:06,048 INFO L226 Difference]: Without dead ends: 23119 [2022-01-10 12:15:06,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=750, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 12:15:06,055 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 4854 mSDsluCounter, 5321 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4854 SdHoareTripleChecker+Valid, 6292 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:06,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4854 Valid, 6292 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:15:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23119 states. [2022-01-10 12:15:07,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23119 to 7876. [2022-01-10 12:15:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 7872 states have (on average 1.601244918699187) internal successors, (12605), 7875 states have internal predecessors, (12605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 12605 transitions. [2022-01-10 12:15:07,088 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 12605 transitions. Word has length 65 [2022-01-10 12:15:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:07,089 INFO L470 AbstractCegarLoop]: Abstraction has 7876 states and 12605 transitions. [2022-01-10 12:15:07,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:07,089 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 12605 transitions. [2022-01-10 12:15:07,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:15:07,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:07,096 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] [2022-01-10 12:15:07,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:15:07,096 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:07,096 INFO L85 PathProgramCache]: Analyzing trace with hash 843467242, now seen corresponding path program 1 times [2022-01-10 12:15:07,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:07,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902135000] [2022-01-10 12:15:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:07,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:07,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:07,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902135000] [2022-01-10 12:15:07,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902135000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:07,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:07,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:15:07,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206955447] [2022-01-10 12:15:07,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:07,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:15:07,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:07,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:15:07,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:15:07,195 INFO L87 Difference]: Start difference. First operand 7876 states and 12605 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:08,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:08,612 INFO L93 Difference]: Finished difference Result 14279 states and 22185 transitions. [2022-01-10 12:15:08,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:15:08,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 12:15:08,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:08,624 INFO L225 Difference]: With dead ends: 14279 [2022-01-10 12:15:08,624 INFO L226 Difference]: Without dead ends: 9470 [2022-01-10 12:15:08,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-10 12:15:08,629 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 1707 mSDsluCounter, 3189 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:08,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1707 Valid, 3948 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:15:08,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9470 states. [2022-01-10 12:15:09,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9470 to 7876. [2022-01-10 12:15:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 7872 states have (on average 1.5920985772357723) internal successors, (12533), 7875 states have internal predecessors, (12533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 12533 transitions. [2022-01-10 12:15:09,559 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 12533 transitions. Word has length 65 [2022-01-10 12:15:09,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:09,559 INFO L470 AbstractCegarLoop]: Abstraction has 7876 states and 12533 transitions. [2022-01-10 12:15:09,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:09,559 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 12533 transitions. [2022-01-10 12:15:09,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:15:09,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:09,565 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] [2022-01-10 12:15:09,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:15:09,565 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:09,565 INFO L85 PathProgramCache]: Analyzing trace with hash 646953737, now seen corresponding path program 1 times [2022-01-10 12:15:09,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:09,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038364174] [2022-01-10 12:15:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:09,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:09,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:09,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:09,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038364174] [2022-01-10 12:15:09,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038364174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:09,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:09,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:15:09,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315356205] [2022-01-10 12:15:09,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:09,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:15:09,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:09,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:15:09,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:15:09,633 INFO L87 Difference]: Start difference. First operand 7876 states and 12533 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:12,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:12,660 INFO L93 Difference]: Finished difference Result 20283 states and 30660 transitions. [2022-01-10 12:15:12,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:15:12,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 12:15:12,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:12,679 INFO L225 Difference]: With dead ends: 20283 [2022-01-10 12:15:12,679 INFO L226 Difference]: Without dead ends: 17816 [2022-01-10 12:15:12,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:15:12,683 INFO L933 BasicCegarLoop]: 1140 mSDtfsCounter, 717 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:12,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 3750 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:15:12,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17816 states. [2022-01-10 12:15:13,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17816 to 7920. [2022-01-10 12:15:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7920 states, 7916 states have (on average 1.5819858514401213) internal successors, (12523), 7919 states have internal predecessors, (12523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:13,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7920 states to 7920 states and 12523 transitions. [2022-01-10 12:15:13,736 INFO L78 Accepts]: Start accepts. Automaton has 7920 states and 12523 transitions. Word has length 65 [2022-01-10 12:15:13,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:13,736 INFO L470 AbstractCegarLoop]: Abstraction has 7920 states and 12523 transitions. [2022-01-10 12:15:13,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 7920 states and 12523 transitions. [2022-01-10 12:15:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:15:13,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:13,750 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] [2022-01-10 12:15:13,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:15:13,750 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:13,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:13,751 INFO L85 PathProgramCache]: Analyzing trace with hash -333564778, now seen corresponding path program 1 times [2022-01-10 12:15:13,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:13,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413868514] [2022-01-10 12:15:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:13,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:13,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:13,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413868514] [2022-01-10 12:15:13,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413868514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:13,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:13,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:15:13,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589506449] [2022-01-10 12:15:13,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:13,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:15:13,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:13,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:15:13,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:15:13,817 INFO L87 Difference]: Start difference. First operand 7920 states and 12523 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:15,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:15,166 INFO L93 Difference]: Finished difference Result 12387 states and 19115 transitions. [2022-01-10 12:15:15,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:15:15,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 12:15:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:15,177 INFO L225 Difference]: With dead ends: 12387 [2022-01-10 12:15:15,177 INFO L226 Difference]: Without dead ends: 9373 [2022-01-10 12:15:15,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:15:15,181 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 703 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:15,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [703 Valid, 1764 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:15:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9373 states. [2022-01-10 12:15:16,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9373 to 7920. [2022-01-10 12:15:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7920 states, 7916 states have (on average 1.5809752400202122) internal successors, (12515), 7919 states have internal predecessors, (12515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:16,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7920 states to 7920 states and 12515 transitions. [2022-01-10 12:15:16,175 INFO L78 Accepts]: Start accepts. Automaton has 7920 states and 12515 transitions. Word has length 65 [2022-01-10 12:15:16,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:16,175 INFO L470 AbstractCegarLoop]: Abstraction has 7920 states and 12515 transitions. [2022-01-10 12:15:16,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:16,176 INFO L276 IsEmpty]: Start isEmpty. Operand 7920 states and 12515 transitions. [2022-01-10 12:15:16,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:15:16,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:16,182 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] [2022-01-10 12:15:16,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:15:16,182 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:16,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:16,182 INFO L85 PathProgramCache]: Analyzing trace with hash -588301323, now seen corresponding path program 1 times [2022-01-10 12:15:16,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:16,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876889533] [2022-01-10 12:15:16,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:16,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:16,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:16,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876889533] [2022-01-10 12:15:16,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876889533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:16,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:16,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:15:16,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970412240] [2022-01-10 12:15:16,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:16,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:15:16,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:16,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:15:16,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:15:16,260 INFO L87 Difference]: Start difference. First operand 7920 states and 12515 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:20,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:20,206 INFO L93 Difference]: Finished difference Result 20538 states and 30252 transitions. [2022-01-10 12:15:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 12:15:20,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 12:15:20,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:20,230 INFO L225 Difference]: With dead ends: 20538 [2022-01-10 12:15:20,230 INFO L226 Difference]: Without dead ends: 19283 [2022-01-10 12:15:20,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:15:20,236 INFO L933 BasicCegarLoop]: 1503 mSDtfsCounter, 1480 mSDsluCounter, 3775 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 5278 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:20,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 5278 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:15:20,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19283 states. [2022-01-10 12:15:21,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19283 to 8734. [2022-01-10 12:15:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8734 states, 8730 states have (on average 1.5540664375715922) internal successors, (13567), 8733 states have internal predecessors, (13567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8734 states to 8734 states and 13567 transitions. [2022-01-10 12:15:21,550 INFO L78 Accepts]: Start accepts. Automaton has 8734 states and 13567 transitions. Word has length 65 [2022-01-10 12:15:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:21,551 INFO L470 AbstractCegarLoop]: Abstraction has 8734 states and 13567 transitions. [2022-01-10 12:15:21,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:21,551 INFO L276 IsEmpty]: Start isEmpty. Operand 8734 states and 13567 transitions. [2022-01-10 12:15:21,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:15:21,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:21,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:15:21,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:15:21,570 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:21,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:21,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1236563930, now seen corresponding path program 1 times [2022-01-10 12:15:21,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:21,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894897927] [2022-01-10 12:15:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:21,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:21,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:21,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894897927] [2022-01-10 12:15:21,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894897927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:21,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:21,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:15:21,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954115063] [2022-01-10 12:15:21,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:21,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:15:21,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:15:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:15:21,694 INFO L87 Difference]: Start difference. First operand 8734 states and 13567 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:30,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:30,391 INFO L93 Difference]: Finished difference Result 45549 states and 68591 transitions. [2022-01-10 12:15:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 12:15:30,391 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 12:15:30,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:30,449 INFO L225 Difference]: With dead ends: 45549 [2022-01-10 12:15:30,449 INFO L226 Difference]: Without dead ends: 42508 [2022-01-10 12:15:30,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=785, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 12:15:30,464 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 8081 mSDsluCounter, 6565 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8081 SdHoareTripleChecker+Valid, 7357 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:30,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8081 Valid, 7357 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:15:30,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42508 states. [2022-01-10 12:15:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42508 to 19423. [2022-01-10 12:15:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19423 states, 19419 states have (on average 1.5491528914980175) internal successors, (30083), 19422 states have internal predecessors, (30083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:33,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19423 states to 19423 states and 30083 transitions. [2022-01-10 12:15:33,972 INFO L78 Accepts]: Start accepts. Automaton has 19423 states and 30083 transitions. Word has length 66 [2022-01-10 12:15:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:33,972 INFO L470 AbstractCegarLoop]: Abstraction has 19423 states and 30083 transitions. [2022-01-10 12:15:33,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 19423 states and 30083 transitions. [2022-01-10 12:15:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:15:33,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:33,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:15:33,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:15:33,981 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:33,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:33,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1236593721, now seen corresponding path program 1 times [2022-01-10 12:15:33,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:33,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841013191] [2022-01-10 12:15:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:33,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:34,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:34,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841013191] [2022-01-10 12:15:34,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841013191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:34,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:34,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:15:34,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73993508] [2022-01-10 12:15:34,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:34,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:15:34,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:34,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:15:34,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:15:34,090 INFO L87 Difference]: Start difference. First operand 19423 states and 30083 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:37,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:37,308 INFO L93 Difference]: Finished difference Result 26263 states and 40303 transitions. [2022-01-10 12:15:37,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:15:37,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 12:15:37,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:37,337 INFO L225 Difference]: With dead ends: 26263 [2022-01-10 12:15:37,338 INFO L226 Difference]: Without dead ends: 19447 [2022-01-10 12:15:37,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:15:37,348 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 1 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:37,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1456 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:15:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19447 states. [2022-01-10 12:15:40,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19447 to 19439. [2022-01-10 12:15:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19439 states, 19435 states have (on average 1.548700797530229) internal successors, (30099), 19438 states have internal predecessors, (30099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19439 states to 19439 states and 30099 transitions. [2022-01-10 12:15:40,839 INFO L78 Accepts]: Start accepts. Automaton has 19439 states and 30099 transitions. Word has length 66 [2022-01-10 12:15:40,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:40,839 INFO L470 AbstractCegarLoop]: Abstraction has 19439 states and 30099 transitions. [2022-01-10 12:15:40,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 19439 states and 30099 transitions. [2022-01-10 12:15:40,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:15:40,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:40,850 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:15:40,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:15:40,850 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:40,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:40,851 INFO L85 PathProgramCache]: Analyzing trace with hash 33622091, now seen corresponding path program 1 times [2022-01-10 12:15:40,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:40,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654078237] [2022-01-10 12:15:40,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:40,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:40,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:40,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654078237] [2022-01-10 12:15:40,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654078237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:40,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:40,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:15:40,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785631508] [2022-01-10 12:15:40,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:40,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:15:40,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:40,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:15:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:15:40,893 INFO L87 Difference]: Start difference. First operand 19439 states and 30099 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:47,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:47,440 INFO L93 Difference]: Finished difference Result 57127 states and 88329 transitions. [2022-01-10 12:15:47,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:15:47,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:15:47,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:47,502 INFO L225 Difference]: With dead ends: 57127 [2022-01-10 12:15:47,502 INFO L226 Difference]: Without dead ends: 37867 [2022-01-10 12:15:47,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:15:47,524 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 679 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:47,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 1362 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:15:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37867 states. [2022-01-10 12:15:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37867 to 22159. [2022-01-10 12:15:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22159 states, 22155 states have (on average 1.5773865944482057) internal successors, (34947), 22158 states have internal predecessors, (34947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:51,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22159 states to 22159 states and 34947 transitions. [2022-01-10 12:15:51,381 INFO L78 Accepts]: Start accepts. Automaton has 22159 states and 34947 transitions. Word has length 72 [2022-01-10 12:15:51,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:51,382 INFO L470 AbstractCegarLoop]: Abstraction has 22159 states and 34947 transitions. [2022-01-10 12:15:51,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:51,382 INFO L276 IsEmpty]: Start isEmpty. Operand 22159 states and 34947 transitions. [2022-01-10 12:15:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:15:51,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:51,399 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:15:51,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:15:51,400 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:51,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1448677522, now seen corresponding path program 1 times [2022-01-10 12:15:51,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:51,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121734487] [2022-01-10 12:15:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:51,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:51,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:51,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121734487] [2022-01-10 12:15:51,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121734487] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:15:51,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552690832] [2022-01-10 12:15:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:51,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:15:51,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:15:51,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:15:51,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:15:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:51,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 12:15:51,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:15:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:51,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:15:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:52,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552690832] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:15:52,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:15:52,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 12:15:52,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593143981] [2022-01-10 12:15:52,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:15:52,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:15:52,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:52,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:15:52,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:15:52,134 INFO L87 Difference]: Start difference. First operand 22159 states and 34947 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)