/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:04:47,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:04:47,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:04:48,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:04:48,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:04:48,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:04:48,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:04:48,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:04:48,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:04:48,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:04:48,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:04:48,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:04:48,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:04:48,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:04:48,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:04:48,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:04:48,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:04:48,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:04:48,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:04:48,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:04:48,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:04:48,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:04:48,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:04:48,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:04:48,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:04:48,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:04:48,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:04:48,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:04:48,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:04:48,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:04:48,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:04:48,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:04:48,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:04:48,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:04:48,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:04:48,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:04:48,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:04:48,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:04:48,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:04:48,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:04:48,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:04:48,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:04:48,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:04:48,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:04:48,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:04:48,094 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:04:48,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:04:48,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:04:48,095 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:04:48,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:04:48,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:04:48,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:04:48,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:04:48,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:04:48,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:04:48,096 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:04:48,096 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:04:48,096 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:04:48,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:04:48,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:04:48,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:04:48,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:04:48,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:04:48,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:04:48,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:04:48,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:04:48,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:04:48,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:04:48,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:04:48,099 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:04:48,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:04:48,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:04:48,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:04:48,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:04:48,100 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:04:48,100 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:04:48,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:04:48,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:04:48,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:04:48,324 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:04:48,326 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:04:48,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product17.cil.c [2022-01-10 18:04:48,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44d8def1d/359bafd1e3e948d5bacb0fcceda50df6/FLAGd9405eab0 [2022-01-10 18:04:48,794 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:04:48,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product17.cil.c [2022-01-10 18:04:48,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44d8def1d/359bafd1e3e948d5bacb0fcceda50df6/FLAGd9405eab0 [2022-01-10 18:04:48,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44d8def1d/359bafd1e3e948d5bacb0fcceda50df6 [2022-01-10 18:04:48,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:04:48,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:04:48,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:04:48,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:04:48,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:04:48,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:04:48" (1/1) ... [2022-01-10 18:04:48,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc8ba8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:48, skipping insertion in model container [2022-01-10 18:04:48,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:04:48" (1/1) ... [2022-01-10 18:04:48,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:04:48,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:04:49,312 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_product17.cil.c[63718,63731] [2022-01-10 18:04:49,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:04:49,337 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:04:49,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:04:49,404 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_product17.cil.c[63718,63731] [2022-01-10 18:04:49,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:04:49,409 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:04:49,461 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_product17.cil.c[63718,63731] [2022-01-10 18:04:49,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:04:49,481 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:04:49,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:49 WrapperNode [2022-01-10 18:04:49,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:04:49,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:04:49,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:04:49,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:04:49,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:49" (1/1) ... [2022-01-10 18:04:49,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:49" (1/1) ... [2022-01-10 18:04:49,560 INFO L137 Inliner]: procedures = 130, calls = 217, calls flagged for inlining = 124, calls inlined = 248, statements flattened = 4048 [2022-01-10 18:04:49,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:04:49,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:04:49,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:04:49,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:04:49,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:49" (1/1) ... [2022-01-10 18:04:49,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:49" (1/1) ... [2022-01-10 18:04:49,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:49" (1/1) ... [2022-01-10 18:04:49,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:49" (1/1) ... [2022-01-10 18:04:49,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:49" (1/1) ... [2022-01-10 18:04:49,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:49" (1/1) ... [2022-01-10 18:04:49,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:49" (1/1) ... [2022-01-10 18:04:49,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:04:49,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:04:49,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:04:49,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:04:49,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:49" (1/1) ... [2022-01-10 18:04:49,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:04:49,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:04:49,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:04:49,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:04:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:04:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:04:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:04:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:04:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:04:49,935 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:04:49,936 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:04:51,530 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:04:51,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:04:51,544 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:04:51,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:04:51 BoogieIcfgContainer [2022-01-10 18:04:51,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:04:51,547 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:04:51,547 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:04:51,548 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:04:51,550 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:04:51" (1/1) ... [2022-01-10 18:04:51,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:04:51 BasicIcfg [2022-01-10 18:04:51,902 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:04:51,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:04:51,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:04:51,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:04:51,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:04:48" (1/4) ... [2022-01-10 18:04:51,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4dfbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:04:51, skipping insertion in model container [2022-01-10 18:04:51,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:49" (2/4) ... [2022-01-10 18:04:51,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4dfbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:04:51, skipping insertion in model container [2022-01-10 18:04:51,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:04:51" (3/4) ... [2022-01-10 18:04:51,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4dfbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:04:51, skipping insertion in model container [2022-01-10 18:04:51,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:04:51" (4/4) ... [2022-01-10 18:04:51,907 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product17.cil.cTransformedIcfg [2022-01-10 18:04:51,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:04:51,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-01-10 18:04:51,957 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:04:51,964 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:04:51,964 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-01-10 18:04:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 907 states, 894 states have (on average 1.7114093959731544) internal successors, (1530), 906 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:52,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 18:04:52,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:52,005 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 18:04:52,006 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:04:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:52,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1070440967, now seen corresponding path program 1 times [2022-01-10 18:04:52,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:52,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467954379] [2022-01-10 18:04:52,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:52,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:52,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:52,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467954379] [2022-01-10 18:04:52,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467954379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:52,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:52,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:04:52,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469023535] [2022-01-10 18:04:52,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:52,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:04:52,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:52,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:04:52,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:04:52,327 INFO L87 Difference]: Start difference. First operand has 907 states, 894 states have (on average 1.7114093959731544) internal successors, (1530), 906 states have internal predecessors, (1530), 0 states have call successors, (0), 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 28.0) internal successors, (56), 2 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 18:04:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:52,391 INFO L93 Difference]: Finished difference Result 1504 states and 2515 transitions. [2022-01-10 18:04:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:04:52,393 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 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 18:04:52,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:52,408 INFO L225 Difference]: With dead ends: 1504 [2022-01-10 18:04:52,409 INFO L226 Difference]: Without dead ends: 811 [2022-01-10 18:04:52,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:04:52,417 INFO L933 BasicCegarLoop]: 1504 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, 1504 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:52,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:52,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-01-10 18:04:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 811. [2022-01-10 18:04:52,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 799 states have (on average 1.7133917396745932) internal successors, (1369), 810 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1369 transitions. [2022-01-10 18:04:52,484 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1369 transitions. Word has length 56 [2022-01-10 18:04:52,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:52,484 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1369 transitions. [2022-01-10 18:04:52,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 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 18:04:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1369 transitions. [2022-01-10 18:04:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 18:04:52,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:52,487 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 18:04:52,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:04:52,488 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:04:52,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1623758929, now seen corresponding path program 1 times [2022-01-10 18:04:52,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:52,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944918069] [2022-01-10 18:04:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:52,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:52,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:52,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944918069] [2022-01-10 18:04:52,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944918069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:52,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:52,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:04:52,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238690892] [2022-01-10 18:04:52,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:52,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:04:52,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:52,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:04:52,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:04:52,670 INFO L87 Difference]: Start difference. First operand 811 states and 1369 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 18:04:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:52,734 INFO L93 Difference]: Finished difference Result 1603 states and 2710 transitions. [2022-01-10 18:04:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:04:52,735 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 18:04:52,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:52,737 INFO L225 Difference]: With dead ends: 1603 [2022-01-10 18:04:52,737 INFO L226 Difference]: Without dead ends: 811 [2022-01-10 18:04:52,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:04:52,739 INFO L933 BasicCegarLoop]: 1349 mSDtfsCounter, 1344 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:52,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1344 Valid, 1362 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-01-10 18:04:52,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 811. [2022-01-10 18:04:52,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 799 states have (on average 1.7108886107634542) internal successors, (1367), 810 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:52,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1367 transitions. [2022-01-10 18:04:52,762 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1367 transitions. Word has length 57 [2022-01-10 18:04:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:52,762 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1367 transitions. [2022-01-10 18:04:52,762 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 18:04:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1367 transitions. [2022-01-10 18:04:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:04:52,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:52,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:52,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:04:52,764 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:04:52,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:52,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1961176145, now seen corresponding path program 1 times [2022-01-10 18:04:52,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:52,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599052146] [2022-01-10 18:04:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:52,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:52,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:52,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599052146] [2022-01-10 18:04:52,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599052146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:52,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:52,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:52,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381979945] [2022-01-10 18:04:52,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:52,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:52,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:52,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:52,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:52,920 INFO L87 Difference]: Start difference. First operand 811 states and 1367 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:53,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:53,195 INFO L93 Difference]: Finished difference Result 3923 states and 6631 transitions. [2022-01-10 18:04:53,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:04:53,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 18:04:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:53,208 INFO L225 Difference]: With dead ends: 3923 [2022-01-10 18:04:53,208 INFO L226 Difference]: Without dead ends: 3136 [2022-01-10 18:04:53,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:04:53,214 INFO L933 BasicCegarLoop]: 2657 mSDtfsCounter, 6618 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6618 SdHoareTripleChecker+Valid, 6630 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:53,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6618 Valid, 6630 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:53,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2022-01-10 18:04:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 811. [2022-01-10 18:04:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 799 states have (on average 1.709637046307885) internal successors, (1366), 810 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1366 transitions. [2022-01-10 18:04:53,258 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1366 transitions. Word has length 59 [2022-01-10 18:04:53,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:53,259 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1366 transitions. [2022-01-10 18:04:53,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:53,259 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1366 transitions. [2022-01-10 18:04:53,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:04:53,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:53,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:53,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:04:53,260 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:04:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:53,261 INFO L85 PathProgramCache]: Analyzing trace with hash -216712851, now seen corresponding path program 1 times [2022-01-10 18:04:53,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:53,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716182654] [2022-01-10 18:04:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:53,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:53,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:53,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716182654] [2022-01-10 18:04:53,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716182654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:53,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:53,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:04:53,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897757150] [2022-01-10 18:04:53,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:53,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:04:53,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:53,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:04:53,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:04:53,352 INFO L87 Difference]: Start difference. First operand 811 states and 1366 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:53,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:53,408 INFO L93 Difference]: Finished difference Result 1607 states and 2710 transitions. [2022-01-10 18:04:53,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:04:53,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 18:04:53,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:53,411 INFO L225 Difference]: With dead ends: 1607 [2022-01-10 18:04:53,411 INFO L226 Difference]: Without dead ends: 825 [2022-01-10 18:04:53,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:04:53,419 INFO L933 BasicCegarLoop]: 1380 mSDtfsCounter, 1345 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:53,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 1402 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:53,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-01-10 18:04:53,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 811. [2022-01-10 18:04:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 799 states have (on average 1.7083854818523154) internal successors, (1365), 810 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:53,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1365 transitions. [2022-01-10 18:04:53,452 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1365 transitions. Word has length 60 [2022-01-10 18:04:53,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:53,453 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1365 transitions. [2022-01-10 18:04:53,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1365 transitions. [2022-01-10 18:04:53,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:04:53,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:53,456 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 18:04:53,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:04:53,456 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:04:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1002830706, now seen corresponding path program 1 times [2022-01-10 18:04:53,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:53,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53467652] [2022-01-10 18:04:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:53,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:53,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:53,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53467652] [2022-01-10 18:04:53,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53467652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:53,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:53,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:53,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768477640] [2022-01-10 18:04:53,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:53,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:53,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:53,594 INFO L87 Difference]: Start difference. First operand 811 states and 1365 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 18:04:53,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:53,762 INFO L93 Difference]: Finished difference Result 2367 states and 3995 transitions. [2022-01-10 18:04:53,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:04:53,762 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 18:04:53,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:53,768 INFO L225 Difference]: With dead ends: 2367 [2022-01-10 18:04:53,768 INFO L226 Difference]: Without dead ends: 1590 [2022-01-10 18:04:53,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:04:53,770 INFO L933 BasicCegarLoop]: 1374 mSDtfsCounter, 6541 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6541 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:53,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6541 Valid, 2762 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2022-01-10 18:04:53,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 811. [2022-01-10 18:04:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 799 states have (on average 1.7058823529411764) internal successors, (1363), 810 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1363 transitions. [2022-01-10 18:04:53,809 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1363 transitions. Word has length 61 [2022-01-10 18:04:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:53,813 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1363 transitions. [2022-01-10 18:04:53,813 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 18:04:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1363 transitions. [2022-01-10 18:04:53,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:04:53,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:53,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:53,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:04:53,814 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:04:53,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:53,815 INFO L85 PathProgramCache]: Analyzing trace with hash -875340977, now seen corresponding path program 1 times [2022-01-10 18:04:53,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:53,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509929037] [2022-01-10 18:04:53,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:53,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:53,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:53,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509929037] [2022-01-10 18:04:53,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509929037] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:53,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:53,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:04:53,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969167227] [2022-01-10 18:04:53,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:53,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:04:53,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:53,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:04:53,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:04:53,921 INFO L87 Difference]: Start difference. First operand 811 states and 1363 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:54,340 INFO L93 Difference]: Finished difference Result 4614 states and 7720 transitions. [2022-01-10 18:04:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:04:54,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 18:04:54,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:54,355 INFO L225 Difference]: With dead ends: 4614 [2022-01-10 18:04:54,355 INFO L226 Difference]: Without dead ends: 4120 [2022-01-10 18:04:54,359 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 18:04:54,360 INFO L933 BasicCegarLoop]: 2463 mSDtfsCounter, 8230 mSDsluCounter, 8077 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8230 SdHoareTripleChecker+Valid, 10540 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 18:04:54,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8230 Valid, 10540 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4120 states. [2022-01-10 18:04:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4120 to 1390. [2022-01-10 18:04:54,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1378 states have (on average 1.711901306240929) internal successors, (2359), 1389 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:54,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 2359 transitions. [2022-01-10 18:04:54,488 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 2359 transitions. Word has length 63 [2022-01-10 18:04:54,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:54,490 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 2359 transitions. [2022-01-10 18:04:54,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:54,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 2359 transitions. [2022-01-10 18:04:54,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:04:54,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:54,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:54,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:04:54,493 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:04:54,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:54,493 INFO L85 PathProgramCache]: Analyzing trace with hash 665064445, now seen corresponding path program 1 times [2022-01-10 18:04:54,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:54,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912683056] [2022-01-10 18:04:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:54,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:54,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:54,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912683056] [2022-01-10 18:04:54,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912683056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:54,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:54,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:54,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543538193] [2022-01-10 18:04:54,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:54,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:54,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:54,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:54,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:54,598 INFO L87 Difference]: Start difference. First operand 1390 states and 2359 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:54,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:54,752 INFO L93 Difference]: Finished difference Result 2382 states and 3993 transitions. [2022-01-10 18:04:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:04:54,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 18:04:54,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:54,758 INFO L225 Difference]: With dead ends: 2382 [2022-01-10 18:04:54,758 INFO L226 Difference]: Without dead ends: 1598 [2022-01-10 18:04:54,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:04:54,759 INFO L933 BasicCegarLoop]: 1345 mSDtfsCounter, 3663 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3663 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:54,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3663 Valid, 2724 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:54,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2022-01-10 18:04:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1390. [2022-01-10 18:04:54,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1378 states have (on average 1.70899854862119) internal successors, (2355), 1389 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 2355 transitions. [2022-01-10 18:04:54,823 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 2355 transitions. Word has length 64 [2022-01-10 18:04:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:54,823 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 2355 transitions. [2022-01-10 18:04:54,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:54,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 2355 transitions. [2022-01-10 18:04:54,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:04:54,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:54,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:54,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:04:54,825 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:04:54,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:54,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1937404583, now seen corresponding path program 1 times [2022-01-10 18:04:54,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:54,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311354007] [2022-01-10 18:04:54,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:54,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:54,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:54,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311354007] [2022-01-10 18:04:54,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311354007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:54,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:54,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:54,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509478962] [2022-01-10 18:04:54,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:54,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:54,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:54,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:54,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:54,883 INFO L87 Difference]: Start difference. First operand 1390 states and 2355 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:55,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:55,107 INFO L93 Difference]: Finished difference Result 4047 states and 6894 transitions. [2022-01-10 18:04:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:04:55,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 18:04:55,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:55,116 INFO L225 Difference]: With dead ends: 4047 [2022-01-10 18:04:55,117 INFO L226 Difference]: Without dead ends: 2694 [2022-01-10 18:04:55,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:04:55,120 INFO L933 BasicCegarLoop]: 2625 mSDtfsCounter, 4020 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4020 SdHoareTripleChecker+Valid, 3939 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:55,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4020 Valid, 3939 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:55,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2022-01-10 18:04:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 1390. [2022-01-10 18:04:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1378 states have (on average 1.7075471698113207) internal successors, (2353), 1389 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 2353 transitions. [2022-01-10 18:04:55,213 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 2353 transitions. Word has length 64 [2022-01-10 18:04:55,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:55,213 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 2353 transitions. [2022-01-10 18:04:55,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:55,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 2353 transitions. [2022-01-10 18:04:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:04:55,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:55,215 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 18:04:55,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:04:55,215 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:04:55,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:55,216 INFO L85 PathProgramCache]: Analyzing trace with hash 33877470, now seen corresponding path program 1 times [2022-01-10 18:04:55,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:55,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244660318] [2022-01-10 18:04:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:55,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:55,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:55,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244660318] [2022-01-10 18:04:55,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244660318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:55,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:55,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:04:55,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400792390] [2022-01-10 18:04:55,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:55,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:55,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:55,329 INFO L87 Difference]: Start difference. First operand 1390 states and 2353 transitions. Second operand has 5 states, 5 states have (on average 13.0) 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 18:04:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:55,848 INFO L93 Difference]: Finished difference Result 5248 states and 8661 transitions. [2022-01-10 18:04:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:04:55,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) 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 18:04:55,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:55,863 INFO L225 Difference]: With dead ends: 5248 [2022-01-10 18:04:55,863 INFO L226 Difference]: Without dead ends: 4564 [2022-01-10 18:04:55,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:04:55,868 INFO L933 BasicCegarLoop]: 1347 mSDtfsCounter, 5176 mSDsluCounter, 4713 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5176 SdHoareTripleChecker+Valid, 6060 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:55,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5176 Valid, 6060 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:55,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2022-01-10 18:04:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 2170. [2022-01-10 18:04:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 2158 states have (on average 1.6839666357738647) internal successors, (3634), 2169 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 3634 transitions. [2022-01-10 18:04:56,006 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 3634 transitions. Word has length 65 [2022-01-10 18:04:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:56,006 INFO L470 AbstractCegarLoop]: Abstraction has 2170 states and 3634 transitions. [2022-01-10 18:04:56,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) 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 18:04:56,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 3634 transitions. [2022-01-10 18:04:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:04:56,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:56,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:56,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:04:56,008 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:04:56,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2053480831, now seen corresponding path program 1 times [2022-01-10 18:04:56,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:56,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574554756] [2022-01-10 18:04:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:56,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:56,101 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 18:04:56,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:56,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574554756] [2022-01-10 18:04:56,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574554756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:56,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:56,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:04:56,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154097538] [2022-01-10 18:04:56,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:56,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:04:56,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:56,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:04:56,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:04:56,103 INFO L87 Difference]: Start difference. First operand 2170 states and 3634 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:56,546 INFO L93 Difference]: Finished difference Result 4165 states and 6879 transitions. [2022-01-10 18:04:56,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:04:56,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 18:04:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:56,555 INFO L225 Difference]: With dead ends: 4165 [2022-01-10 18:04:56,555 INFO L226 Difference]: Without dead ends: 2849 [2022-01-10 18:04:56,557 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 18:04:56,557 INFO L933 BasicCegarLoop]: 1463 mSDtfsCounter, 5259 mSDsluCounter, 5198 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5259 SdHoareTripleChecker+Valid, 6661 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:56,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5259 Valid, 6661 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:56,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2022-01-10 18:04:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 2008. [2022-01-10 18:04:56,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1996 states have (on average 1.6733466933867736) internal successors, (3340), 2007 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:56,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 3340 transitions. [2022-01-10 18:04:56,682 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 3340 transitions. Word has length 66 [2022-01-10 18:04:56,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:56,683 INFO L470 AbstractCegarLoop]: Abstraction has 2008 states and 3340 transitions. [2022-01-10 18:04:56,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:56,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 3340 transitions. [2022-01-10 18:04:56,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:04:56,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:56,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:56,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:04:56,685 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:04:56,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:56,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1399687836, now seen corresponding path program 1 times [2022-01-10 18:04:56,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:56,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031975958] [2022-01-10 18:04:56,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:56,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:56,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:56,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031975958] [2022-01-10 18:04:56,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031975958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:56,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:56,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:04:56,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143843815] [2022-01-10 18:04:56,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:56,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:04:56,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:56,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:04:56,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:04:56,793 INFO L87 Difference]: Start difference. First operand 2008 states and 3340 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:58,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:58,193 INFO L93 Difference]: Finished difference Result 9533 states and 15226 transitions. [2022-01-10 18:04:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-10 18:04:58,194 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:04:58,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:58,214 INFO L225 Difference]: With dead ends: 9533 [2022-01-10 18:04:58,214 INFO L226 Difference]: Without dead ends: 8826 [2022-01-10 18:04:58,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 18:04:58,217 INFO L933 BasicCegarLoop]: 2632 mSDtfsCounter, 9602 mSDsluCounter, 11964 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9602 SdHoareTripleChecker+Valid, 14596 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:58,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9602 Valid, 14596 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:04:58,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8826 states. [2022-01-10 18:04:58,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8826 to 3410. [2022-01-10 18:04:58,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3410 states, 3398 states have (on average 1.6562683931724544) internal successors, (5628), 3409 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 5628 transitions. [2022-01-10 18:04:58,585 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 5628 transitions. Word has length 67 [2022-01-10 18:04:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:58,586 INFO L470 AbstractCegarLoop]: Abstraction has 3410 states and 5628 transitions. [2022-01-10 18:04:58,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 5628 transitions. [2022-01-10 18:04:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:04:58,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:58,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:58,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:04:58,588 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:04:58,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:58,589 INFO L85 PathProgramCache]: Analyzing trace with hash 471207174, now seen corresponding path program 1 times [2022-01-10 18:04:58,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:58,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634680793] [2022-01-10 18:04:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:58,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:58,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:58,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634680793] [2022-01-10 18:04:58,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634680793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:58,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:58,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:04:58,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938205967] [2022-01-10 18:04:58,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:58,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:04:58,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:58,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:04:58,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:04:58,723 INFO L87 Difference]: Start difference. First operand 3410 states and 5628 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:03,296 INFO L93 Difference]: Finished difference Result 30717 states and 49150 transitions. [2022-01-10 18:05:03,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 18:05:03,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 18:05:03,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:03,364 INFO L225 Difference]: With dead ends: 30717 [2022-01-10 18:05:03,364 INFO L226 Difference]: Without dead ends: 28749 [2022-01-10 18:05:03,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=419, Invalid=987, Unknown=0, NotChecked=0, Total=1406 [2022-01-10 18:05:03,377 INFO L933 BasicCegarLoop]: 1481 mSDtfsCounter, 20268 mSDsluCounter, 14490 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20268 SdHoareTripleChecker+Valid, 15971 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:03,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20268 Valid, 15971 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 18:05:03,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28749 states. [2022-01-10 18:05:04,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28749 to 9341. [2022-01-10 18:05:04,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9341 states, 9329 states have (on average 1.6432629435094865) internal successors, (15330), 9340 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9341 states to 9341 states and 15330 transitions. [2022-01-10 18:05:04,407 INFO L78 Accepts]: Start accepts. Automaton has 9341 states and 15330 transitions. Word has length 68 [2022-01-10 18:05:04,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:04,407 INFO L470 AbstractCegarLoop]: Abstraction has 9341 states and 15330 transitions. [2022-01-10 18:05:04,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:04,407 INFO L276 IsEmpty]: Start isEmpty. Operand 9341 states and 15330 transitions. [2022-01-10 18:05:04,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:05:04,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:04,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:04,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:05:04,413 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:05:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash 472220068, now seen corresponding path program 1 times [2022-01-10 18:05:04,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:04,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230781962] [2022-01-10 18:05:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:04,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:04,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:04,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230781962] [2022-01-10 18:05:04,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230781962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:04,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:04,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:05:04,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627669080] [2022-01-10 18:05:04,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:04,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:05:04,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:04,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:05:04,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:05:04,543 INFO L87 Difference]: Start difference. First operand 9341 states and 15330 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:08,627 INFO L93 Difference]: Finished difference Result 28076 states and 44847 transitions. [2022-01-10 18:05:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-10 18:05:08,628 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 18:05:08,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:08,676 INFO L225 Difference]: With dead ends: 28076 [2022-01-10 18:05:08,676 INFO L226 Difference]: Without dead ends: 24893 [2022-01-10 18:05:08,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 18:05:08,686 INFO L933 BasicCegarLoop]: 2750 mSDtfsCounter, 9113 mSDsluCounter, 12130 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9113 SdHoareTripleChecker+Valid, 14880 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:08,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9113 Valid, 14880 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:05:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24893 states. [2022-01-10 18:05:09,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24893 to 9377. [2022-01-10 18:05:09,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9377 states, 9365 states have (on average 1.6407901761879338) internal successors, (15366), 9376 states have internal predecessors, (15366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9377 states to 9377 states and 15366 transitions. [2022-01-10 18:05:09,868 INFO L78 Accepts]: Start accepts. Automaton has 9377 states and 15366 transitions. Word has length 68 [2022-01-10 18:05:09,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:09,869 INFO L470 AbstractCegarLoop]: Abstraction has 9377 states and 15366 transitions. [2022-01-10 18:05:09,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:09,869 INFO L276 IsEmpty]: Start isEmpty. Operand 9377 states and 15366 transitions. [2022-01-10 18:05:09,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:05:09,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:09,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:09,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:05:09,875 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:05:09,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:09,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2104969029, now seen corresponding path program 1 times [2022-01-10 18:05:09,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:09,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503020641] [2022-01-10 18:05:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:09,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:09,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:09,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503020641] [2022-01-10 18:05:09,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503020641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:09,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:09,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:05:09,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865546836] [2022-01-10 18:05:09,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:09,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:05:09,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:09,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:05:09,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:05:09,984 INFO L87 Difference]: Start difference. First operand 9377 states and 15366 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:11,384 INFO L93 Difference]: Finished difference Result 18357 states and 30032 transitions. [2022-01-10 18:05:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:05:11,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 18:05:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:11,403 INFO L225 Difference]: With dead ends: 18357 [2022-01-10 18:05:11,403 INFO L226 Difference]: Without dead ends: 10823 [2022-01-10 18:05:11,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2022-01-10 18:05:11,411 INFO L933 BasicCegarLoop]: 1343 mSDtfsCounter, 4815 mSDsluCounter, 5464 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4815 SdHoareTripleChecker+Valid, 6807 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:11,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4815 Valid, 6807 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:05:11,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10823 states. [2022-01-10 18:05:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10823 to 9377. [2022-01-10 18:05:12,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9377 states, 9365 states have (on average 1.6275493860117458) internal successors, (15242), 9376 states have internal predecessors, (15242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:12,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9377 states to 9377 states and 15242 transitions. [2022-01-10 18:05:12,416 INFO L78 Accepts]: Start accepts. Automaton has 9377 states and 15242 transitions. Word has length 68 [2022-01-10 18:05:12,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:12,416 INFO L470 AbstractCegarLoop]: Abstraction has 9377 states and 15242 transitions. [2022-01-10 18:05:12,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:12,416 INFO L276 IsEmpty]: Start isEmpty. Operand 9377 states and 15242 transitions. [2022-01-10 18:05:12,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:05:12,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:12,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:12,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:05:12,422 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:05:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:12,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1993484762, now seen corresponding path program 1 times [2022-01-10 18:05:12,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:12,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255492078] [2022-01-10 18:05:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:12,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:12,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:12,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255492078] [2022-01-10 18:05:12,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255492078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:12,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:12,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:05:12,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970995665] [2022-01-10 18:05:12,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:12,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:05:12,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:12,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:05:12,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:05:12,497 INFO L87 Difference]: Start difference. First operand 9377 states and 15242 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:15,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:15,418 INFO L93 Difference]: Finished difference Result 24954 states and 40051 transitions. [2022-01-10 18:05:15,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:05:15,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 18:05:15,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:15,451 INFO L225 Difference]: With dead ends: 24954 [2022-01-10 18:05:15,451 INFO L226 Difference]: Without dead ends: 20750 [2022-01-10 18:05:15,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:05:15,460 INFO L933 BasicCegarLoop]: 2497 mSDtfsCounter, 1924 mSDsluCounter, 5196 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 7693 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:15,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1924 Valid, 7693 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:05:15,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20750 states. [2022-01-10 18:05:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20750 to 9543. [2022-01-10 18:05:16,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9543 states, 9531 states have (on average 1.6120029377819747) internal successors, (15364), 9542 states have internal predecessors, (15364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:16,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9543 states to 9543 states and 15364 transitions. [2022-01-10 18:05:16,724 INFO L78 Accepts]: Start accepts. Automaton has 9543 states and 15364 transitions. Word has length 68 [2022-01-10 18:05:16,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:16,724 INFO L470 AbstractCegarLoop]: Abstraction has 9543 states and 15364 transitions. [2022-01-10 18:05:16,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:16,724 INFO L276 IsEmpty]: Start isEmpty. Operand 9543 states and 15364 transitions. [2022-01-10 18:05:16,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:05:16,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:16,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:16,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:05:16,730 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:05:16,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1515246455, now seen corresponding path program 1 times [2022-01-10 18:05:16,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:16,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356147130] [2022-01-10 18:05:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:16,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:16,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:16,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356147130] [2022-01-10 18:05:16,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356147130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:16,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:16,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:05:16,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850042372] [2022-01-10 18:05:16,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:16,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:05:16,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:16,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:05:16,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:05:16,779 INFO L87 Difference]: Start difference. First operand 9543 states and 15364 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:18,306 INFO L93 Difference]: Finished difference Result 17218 states and 27584 transitions. [2022-01-10 18:05:18,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:05:18,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 18:05:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:18,323 INFO L225 Difference]: With dead ends: 17218 [2022-01-10 18:05:18,324 INFO L226 Difference]: Without dead ends: 12976 [2022-01-10 18:05:18,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:05:18,329 INFO L933 BasicCegarLoop]: 1344 mSDtfsCounter, 2244 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:18,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2244 Valid, 3009 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:18,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2022-01-10 18:05:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 9543. [2022-01-10 18:05:19,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9543 states, 9531 states have (on average 1.6115832546427447) internal successors, (15360), 9542 states have internal predecessors, (15360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9543 states to 9543 states and 15360 transitions. [2022-01-10 18:05:19,452 INFO L78 Accepts]: Start accepts. Automaton has 9543 states and 15360 transitions. Word has length 68 [2022-01-10 18:05:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:19,452 INFO L470 AbstractCegarLoop]: Abstraction has 9543 states and 15360 transitions. [2022-01-10 18:05:19,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:19,452 INFO L276 IsEmpty]: Start isEmpty. Operand 9543 states and 15360 transitions. [2022-01-10 18:05:19,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:05:19,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:19,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:19,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:05:19,458 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:05:19,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1866046392, now seen corresponding path program 1 times [2022-01-10 18:05:19,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:19,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528820836] [2022-01-10 18:05:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:19,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:19,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:19,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528820836] [2022-01-10 18:05:19,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528820836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:19,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:19,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:05:19,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204382461] [2022-01-10 18:05:19,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:19,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:05:19,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:19,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:05:19,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:05:19,528 INFO L87 Difference]: Start difference. First operand 9543 states and 15360 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:23,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:23,678 INFO L93 Difference]: Finished difference Result 27259 states and 43385 transitions. [2022-01-10 18:05:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:05:23,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 18:05:23,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:23,719 INFO L225 Difference]: With dead ends: 27259 [2022-01-10 18:05:23,719 INFO L226 Difference]: Without dead ends: 25074 [2022-01-10 18:05:23,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 18:05:23,735 INFO L933 BasicCegarLoop]: 3480 mSDtfsCounter, 3402 mSDsluCounter, 8588 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3402 SdHoareTripleChecker+Valid, 12068 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:23,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3402 Valid, 12068 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:05:23,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25074 states. [2022-01-10 18:05:25,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25074 to 12279. [2022-01-10 18:05:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12279 states, 12267 states have (on average 1.6056085432461074) internal successors, (19696), 12278 states have internal predecessors, (19696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12279 states to 12279 states and 19696 transitions. [2022-01-10 18:05:25,530 INFO L78 Accepts]: Start accepts. Automaton has 12279 states and 19696 transitions. Word has length 68 [2022-01-10 18:05:25,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:25,530 INFO L470 AbstractCegarLoop]: Abstraction has 12279 states and 19696 transitions. [2022-01-10 18:05:25,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:25,530 INFO L276 IsEmpty]: Start isEmpty. Operand 12279 states and 19696 transitions. [2022-01-10 18:05:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:05:25,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:25,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:25,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:05:25,537 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:05:25,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:25,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1723882544, now seen corresponding path program 1 times [2022-01-10 18:05:25,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:25,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441227209] [2022-01-10 18:05:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:25,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:25,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:25,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441227209] [2022-01-10 18:05:25,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441227209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:25,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:25,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:05:25,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308738619] [2022-01-10 18:05:25,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:25,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:05:25,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:25,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:05:25,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:05:25,668 INFO L87 Difference]: Start difference. First operand 12279 states and 19696 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:39,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:39,738 INFO L93 Difference]: Finished difference Result 81671 states and 128624 transitions. [2022-01-10 18:05:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 18:05:39,739 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 18:05:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:39,880 INFO L225 Difference]: With dead ends: 81671 [2022-01-10 18:05:39,880 INFO L226 Difference]: Without dead ends: 74361 [2022-01-10 18:05:39,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=419, Invalid=987, Unknown=0, NotChecked=0, Total=1406 [2022-01-10 18:05:39,908 INFO L933 BasicCegarLoop]: 1483 mSDtfsCounter, 19843 mSDsluCounter, 14349 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19843 SdHoareTripleChecker+Valid, 15832 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:39,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19843 Valid, 15832 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 18:05:40,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74361 states. [2022-01-10 18:05:45,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74361 to 28053. [2022-01-10 18:05:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28053 states, 28041 states have (on average 1.602724581862273) internal successors, (44942), 28052 states have internal predecessors, (44942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28053 states to 28053 states and 44942 transitions. [2022-01-10 18:05:45,601 INFO L78 Accepts]: Start accepts. Automaton has 28053 states and 44942 transitions. Word has length 69 [2022-01-10 18:05:45,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:45,601 INFO L470 AbstractCegarLoop]: Abstraction has 28053 states and 44942 transitions. [2022-01-10 18:05:45,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:45,601 INFO L276 IsEmpty]: Start isEmpty. Operand 28053 states and 44942 transitions. [2022-01-10 18:05:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:05:45,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:45,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:45,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:05:45,617 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:05:45,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:45,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1723912335, now seen corresponding path program 1 times [2022-01-10 18:05:45,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:45,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738271465] [2022-01-10 18:05:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:45,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:45,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:45,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738271465] [2022-01-10 18:05:45,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738271465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:45,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:45,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:05:45,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804615057] [2022-01-10 18:05:45,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:45,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:05:45,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:45,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:05:45,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:05:45,735 INFO L87 Difference]: Start difference. First operand 28053 states and 44942 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:49,837 INFO L93 Difference]: Finished difference Result 39245 states and 62670 transitions. [2022-01-10 18:05:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:05:49,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 18:05:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:49,880 INFO L225 Difference]: With dead ends: 39245 [2022-01-10 18:05:49,881 INFO L226 Difference]: Without dead ends: 28065 [2022-01-10 18:05:49,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:05:49,894 INFO L933 BasicCegarLoop]: 1337 mSDtfsCounter, 1 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:49,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2672 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:49,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28065 states. [2022-01-10 18:05:54,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28065 to 28061. [2022-01-10 18:05:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28061 states, 28049 states have (on average 1.6025526756747122) internal successors, (44950), 28060 states have internal predecessors, (44950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28061 states to 28061 states and 44950 transitions. [2022-01-10 18:05:54,355 INFO L78 Accepts]: Start accepts. Automaton has 28061 states and 44950 transitions. Word has length 69 [2022-01-10 18:05:54,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:54,357 INFO L470 AbstractCegarLoop]: Abstraction has 28061 states and 44950 transitions. [2022-01-10 18:05:54,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:54,358 INFO L276 IsEmpty]: Start isEmpty. Operand 28061 states and 44950 transitions. [2022-01-10 18:05:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:05:54,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:54,366 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, 1, 1] [2022-01-10 18:05:54,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:05:54,366 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-01-10 18:05:54,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:54,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1760334275, now seen corresponding path program 1 times [2022-01-10 18:05:54,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:54,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770130765] [2022-01-10 18:05:54,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:54,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:54,437 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 18:05:54,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:54,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770130765] [2022-01-10 18:05:54,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770130765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:54,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:54,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:05:54,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83364003] [2022-01-10 18:05:54,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:54,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:05:54,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:54,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:05:54,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:05:54,439 INFO L87 Difference]: Start difference. First operand 28061 states and 44950 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)