/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_spec27_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:03:34,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:03:34,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:03:34,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:03:34,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:03:34,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:03:34,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:03:34,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:03:34,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:03:34,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:03:34,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:03:34,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:03:34,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:03:34,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:03:34,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:03:34,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:03:34,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:03:34,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:03:34,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:03:34,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:03:34,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:03:34,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:03:34,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:03:34,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:03:34,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:03:34,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:03:34,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:03:34,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:03:34,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:03:34,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:03:34,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:03:34,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:03:34,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:03:34,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:03:34,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:03:34,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:03:34,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:03:34,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:03:34,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:03:34,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:03:34,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:03:34,712 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 18:03:34,748 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:03:34,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:03:34,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:03:34,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:03:34,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:03:34,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:03:34,750 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:03:34,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:03:34,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:03:34,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:03:34,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:03:34,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:03:34,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:03:34,752 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:03:34,752 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:03:34,752 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:03:34,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:03:34,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:03:34,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:03:34,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:03:34,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:03:34,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:03:34,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:03:34,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:03:34,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:03:34,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:03:34,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:03:34,753 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:03:34,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:03:34,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:03:34,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:03:34,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:03:34,755 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:03:34,755 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:03:35,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:03:35,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:03:35,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:03:35,035 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:03:35,036 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:03:35,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c [2022-01-10 18:03:35,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e4506223/3162b4b3882d472eb04313af0607ceda/FLAGe2405b879 [2022-01-10 18:03:35,561 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:03:35,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c [2022-01-10 18:03:35,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e4506223/3162b4b3882d472eb04313af0607ceda/FLAGe2405b879 [2022-01-10 18:03:35,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e4506223/3162b4b3882d472eb04313af0607ceda [2022-01-10 18:03:35,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:03:35,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:03:35,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:03:35,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:03:35,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:03:35,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:03:35" (1/1) ... [2022-01-10 18:03:35,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644c449a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:35, skipping insertion in model container [2022-01-10 18:03:35,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:03:35" (1/1) ... [2022-01-10 18:03:35,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:03:35,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:03:36,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-01-10 18:03:36,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:03:36,367 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:03:36,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:03:36,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-01-10 18:03:36,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:03:36,494 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:03:36,542 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-01-10 18:03:36,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:03:36,565 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:03:36,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:36 WrapperNode [2022-01-10 18:03:36,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:03:36,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:03:36,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:03:36,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:03:36,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:36" (1/1) ... [2022-01-10 18:03:36,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:36" (1/1) ... [2022-01-10 18:03:36,661 INFO L137 Inliner]: procedures = 129, calls = 200, calls flagged for inlining = 113, calls inlined = 133, statements flattened = 1999 [2022-01-10 18:03:36,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:03:36,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:03:36,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:03:36,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:03:36,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:36" (1/1) ... [2022-01-10 18:03:36,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:36" (1/1) ... [2022-01-10 18:03:36,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:36" (1/1) ... [2022-01-10 18:03:36,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:36" (1/1) ... [2022-01-10 18:03:36,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:36" (1/1) ... [2022-01-10 18:03:36,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:36" (1/1) ... [2022-01-10 18:03:36,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:36" (1/1) ... [2022-01-10 18:03:36,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:03:36,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:03:36,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:03:36,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:03:36,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:36" (1/1) ... [2022-01-10 18:03:36,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:03:36,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:03:36,837 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 18:03:36,856 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 18:03:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:03:36,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:03:36,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:03:36,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:03:36,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:03:37,109 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:03:37,110 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:03:38,080 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:03:38,094 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:03:38,094 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:03:38,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:03:38 BoogieIcfgContainer [2022-01-10 18:03:38,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:03:38,097 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:03:38,097 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:03:38,098 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:03:38,100 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:03:38" (1/1) ... [2022-01-10 18:03:38,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:03:38 BasicIcfg [2022-01-10 18:03:38,445 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:03:38,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:03:38,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:03:38,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:03:38,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:03:35" (1/4) ... [2022-01-10 18:03:38,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7505f08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:03:38, skipping insertion in model container [2022-01-10 18:03:38,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:03:36" (2/4) ... [2022-01-10 18:03:38,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7505f08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:03:38, skipping insertion in model container [2022-01-10 18:03:38,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:03:38" (3/4) ... [2022-01-10 18:03:38,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7505f08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:03:38, skipping insertion in model container [2022-01-10 18:03:38,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:03:38" (4/4) ... [2022-01-10 18:03:38,450 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product18.cil.cTransformedIcfg [2022-01-10 18:03:38,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:03:38,454 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 18:03:38,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:03:38,494 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 18:03:38,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 18:03:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 470 states, 467 states have (on average 1.702355460385439) internal successors, (795), 469 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 18:03:38,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:38,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:38,522 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:38,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash -236903897, now seen corresponding path program 1 times [2022-01-10 18:03:38,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:38,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327247444] [2022-01-10 18:03:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:38,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:38,921 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 18:03:38,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:38,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327247444] [2022-01-10 18:03:38,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327247444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:38,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:38,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:03:38,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421420154] [2022-01-10 18:03:38,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:38,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:03:38,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:38,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:03:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:03:38,950 INFO L87 Difference]: Start difference. First operand has 470 states, 467 states have (on average 1.702355460385439) internal successors, (795), 469 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:38,987 INFO L93 Difference]: Finished difference Result 679 states and 1130 transitions. [2022-01-10 18:03:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:03:38,989 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 18:03:38,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:38,999 INFO L225 Difference]: With dead ends: 679 [2022-01-10 18:03:38,999 INFO L226 Difference]: Without dead ends: 441 [2022-01-10 18:03:39,004 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 18:03:39,006 INFO L933 BasicCegarLoop]: 789 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, 789 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 18:03:39,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:39,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-01-10 18:03:39,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-01-10 18:03:39,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.7107061503416856) internal successors, (751), 440 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 751 transitions. [2022-01-10 18:03:39,052 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 751 transitions. Word has length 55 [2022-01-10 18:03:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:39,053 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 751 transitions. [2022-01-10 18:03:39,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:39,053 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 751 transitions. [2022-01-10 18:03:39,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 18:03:39,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:39,055 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 18:03:39,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:03:39,056 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:39,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:39,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1274186405, now seen corresponding path program 1 times [2022-01-10 18:03:39,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:39,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082772659] [2022-01-10 18:03:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:39,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:39,265 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 18:03:39,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:39,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082772659] [2022-01-10 18:03:39,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082772659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:39,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:39,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:03:39,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222292561] [2022-01-10 18:03:39,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:39,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:03:39,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:39,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:03:39,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:03:39,268 INFO L87 Difference]: Start difference. First operand 441 states and 751 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:39,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:39,343 INFO L93 Difference]: Finished difference Result 863 states and 1474 transitions. [2022-01-10 18:03:39,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:03:39,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 18:03:39,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:39,345 INFO L225 Difference]: With dead ends: 863 [2022-01-10 18:03:39,346 INFO L226 Difference]: Without dead ends: 441 [2022-01-10 18:03:39,347 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 18:03:39,348 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 726 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:39,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 745 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:39,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-01-10 18:03:39,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-01-10 18:03:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.7061503416856492) internal successors, (749), 440 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 749 transitions. [2022-01-10 18:03:39,372 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 749 transitions. Word has length 56 [2022-01-10 18:03:39,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:39,373 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 749 transitions. [2022-01-10 18:03:39,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:39,373 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 749 transitions. [2022-01-10 18:03:39,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:03:39,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:39,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:39,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:03:39,375 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:39,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1677093467, now seen corresponding path program 1 times [2022-01-10 18:03:39,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:39,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748115118] [2022-01-10 18:03:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:39,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:39,634 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 18:03:39,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:39,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748115118] [2022-01-10 18:03:39,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748115118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:39,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:39,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:03:39,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007060225] [2022-01-10 18:03:39,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:39,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:39,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:39,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:39,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:39,637 INFO L87 Difference]: Start difference. First operand 441 states and 749 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:39,884 INFO L93 Difference]: Finished difference Result 2073 states and 3541 transitions. [2022-01-10 18:03:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:03:39,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 18:03:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:39,897 INFO L225 Difference]: With dead ends: 2073 [2022-01-10 18:03:39,898 INFO L226 Difference]: Without dead ends: 1656 [2022-01-10 18:03:39,905 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 18:03:39,908 INFO L933 BasicCegarLoop]: 1421 mSDtfsCounter, 3528 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3528 SdHoareTripleChecker+Valid, 3540 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 18:03:39,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3528 Valid, 3540 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:39,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2022-01-10 18:03:39,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 441. [2022-01-10 18:03:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.703872437357631) internal successors, (748), 440 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:39,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 748 transitions. [2022-01-10 18:03:39,980 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 748 transitions. Word has length 58 [2022-01-10 18:03:39,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:39,981 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 748 transitions. [2022-01-10 18:03:39,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:39,981 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 748 transitions. [2022-01-10 18:03:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:03:39,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:39,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:39,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:03:39,990 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:39,991 INFO L85 PathProgramCache]: Analyzing trace with hash 151898113, now seen corresponding path program 1 times [2022-01-10 18:03:39,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:39,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637805880] [2022-01-10 18:03:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:39,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:40,143 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 18:03:40,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:40,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637805880] [2022-01-10 18:03:40,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637805880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:40,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:40,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:03:40,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657043635] [2022-01-10 18:03:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:40,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:03:40,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:40,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:03:40,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:03:40,148 INFO L87 Difference]: Start difference. First operand 441 states and 748 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:40,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:40,193 INFO L93 Difference]: Finished difference Result 867 states and 1474 transitions. [2022-01-10 18:03:40,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:03:40,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 18:03:40,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:40,196 INFO L225 Difference]: With dead ends: 867 [2022-01-10 18:03:40,196 INFO L226 Difference]: Without dead ends: 455 [2022-01-10 18:03:40,197 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 18:03:40,225 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 727 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 784 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 18:03:40,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 784 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:40,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-01-10 18:03:40,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 441. [2022-01-10 18:03:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.7015945330296127) internal successors, (747), 440 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 747 transitions. [2022-01-10 18:03:40,260 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 747 transitions. Word has length 59 [2022-01-10 18:03:40,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:40,262 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 747 transitions. [2022-01-10 18:03:40,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:40,262 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 747 transitions. [2022-01-10 18:03:40,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:03:40,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:40,264 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 18:03:40,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:03:40,265 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:40,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:40,266 INFO L85 PathProgramCache]: Analyzing trace with hash -784581276, now seen corresponding path program 1 times [2022-01-10 18:03:40,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:40,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289323085] [2022-01-10 18:03:40,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:40,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:40,413 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 18:03:40,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:40,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289323085] [2022-01-10 18:03:40,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289323085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:40,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:40,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:03:40,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897669881] [2022-01-10 18:03:40,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:40,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:40,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:40,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:40,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:40,417 INFO L87 Difference]: Start difference. First operand 441 states and 747 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:40,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:40,591 INFO L93 Difference]: Finished difference Result 1257 states and 2141 transitions. [2022-01-10 18:03:40,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:03:40,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 18:03:40,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:40,596 INFO L225 Difference]: With dead ends: 1257 [2022-01-10 18:03:40,596 INFO L226 Difference]: Without dead ends: 850 [2022-01-10 18:03:40,597 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 18:03:40,598 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 3451 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3451 SdHoareTripleChecker+Valid, 1526 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 18:03:40,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3451 Valid, 1526 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:40,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-01-10 18:03:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 441. [2022-01-10 18:03:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.6970387243735763) internal successors, (745), 440 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 745 transitions. [2022-01-10 18:03:40,636 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 745 transitions. Word has length 60 [2022-01-10 18:03:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:40,636 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 745 transitions. [2022-01-10 18:03:40,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 745 transitions. [2022-01-10 18:03:40,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:03:40,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:40,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:40,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:03:40,638 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:40,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:40,639 INFO L85 PathProgramCache]: Analyzing trace with hash 3378407, now seen corresponding path program 1 times [2022-01-10 18:03:40,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:40,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825621133] [2022-01-10 18:03:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:40,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:40,798 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 18:03:40,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:40,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825621133] [2022-01-10 18:03:40,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825621133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:40,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:40,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:03:40,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876626193] [2022-01-10 18:03:40,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:40,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:03:40,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:40,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:03:40,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:03:40,801 INFO L87 Difference]: Start difference. First operand 441 states and 745 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:41,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:41,096 INFO L93 Difference]: Finished difference Result 2141 states and 3619 transitions. [2022-01-10 18:03:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:03:41,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 18:03:41,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:41,104 INFO L225 Difference]: With dead ends: 2141 [2022-01-10 18:03:41,104 INFO L226 Difference]: Without dead ends: 1978 [2022-01-10 18:03:41,105 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 18:03:41,105 INFO L933 BasicCegarLoop]: 1079 mSDtfsCounter, 3809 mSDsluCounter, 3998 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3809 SdHoareTripleChecker+Valid, 5077 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 18:03:41,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3809 Valid, 5077 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:41,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2022-01-10 18:03:41,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 797. [2022-01-10 18:03:41,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 795 states have (on average 1.69937106918239) internal successors, (1351), 796 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1351 transitions. [2022-01-10 18:03:41,161 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1351 transitions. Word has length 62 [2022-01-10 18:03:41,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:41,161 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1351 transitions. [2022-01-10 18:03:41,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:41,162 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1351 transitions. [2022-01-10 18:03:41,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:03:41,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:41,163 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 18:03:41,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:03:41,163 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:41,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:41,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1907361522, now seen corresponding path program 1 times [2022-01-10 18:03:41,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:41,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472821231] [2022-01-10 18:03:41,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:41,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:41,265 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 18:03:41,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:41,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472821231] [2022-01-10 18:03:41,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472821231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:41,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:41,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:03:41,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755314769] [2022-01-10 18:03:41,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:41,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:03:41,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:41,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:03:41,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:03:41,267 INFO L87 Difference]: Start difference. First operand 797 states and 1351 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 18:03:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:41,646 INFO L93 Difference]: Finished difference Result 3745 states and 6355 transitions. [2022-01-10 18:03:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:03:41,647 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 18:03:41,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:41,657 INFO L225 Difference]: With dead ends: 3745 [2022-01-10 18:03:41,657 INFO L226 Difference]: Without dead ends: 3492 [2022-01-10 18:03:41,658 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 18:03:41,658 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 3819 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3819 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:41,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3819 Valid, 4135 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-01-10 18:03:41,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 1486. [2022-01-10 18:03:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1484 states have (on average 1.7068733153638813) internal successors, (2533), 1485 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:41,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2533 transitions. [2022-01-10 18:03:41,743 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2533 transitions. Word has length 63 [2022-01-10 18:03:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:41,744 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 2533 transitions. [2022-01-10 18:03:41,744 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 18:03:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2533 transitions. [2022-01-10 18:03:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:03:41,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:41,746 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 18:03:41,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:03:41,746 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1928969849, now seen corresponding path program 1 times [2022-01-10 18:03:41,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:41,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31583767] [2022-01-10 18:03:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:41,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:41,806 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 18:03:41,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:41,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31583767] [2022-01-10 18:03:41,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31583767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:41,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:41,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:03:41,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917172491] [2022-01-10 18:03:41,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:41,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:41,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:41,809 INFO L87 Difference]: Start difference. First operand 1486 states and 2533 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:42,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:42,056 INFO L93 Difference]: Finished difference Result 4270 states and 7339 transitions. [2022-01-10 18:03:42,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:03:42,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 18:03:42,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:42,068 INFO L225 Difference]: With dead ends: 4270 [2022-01-10 18:03:42,068 INFO L226 Difference]: Without dead ends: 2834 [2022-01-10 18:03:42,071 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 18:03:42,071 INFO L933 BasicCegarLoop]: 1393 mSDtfsCounter, 2172 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:42,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2172 Valid, 2091 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:42,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2022-01-10 18:03:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1486. [2022-01-10 18:03:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1484 states have (on average 1.7055256064690028) internal successors, (2531), 1485 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2531 transitions. [2022-01-10 18:03:42,211 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2531 transitions. Word has length 63 [2022-01-10 18:03:42,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:42,211 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 2531 transitions. [2022-01-10 18:03:42,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2531 transitions. [2022-01-10 18:03:42,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:03:42,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:42,214 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 18:03:42,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:03:42,215 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:42,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:42,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1317982694, now seen corresponding path program 1 times [2022-01-10 18:03:42,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:42,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538263516] [2022-01-10 18:03:42,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:42,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:42,315 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 18:03:42,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:42,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538263516] [2022-01-10 18:03:42,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538263516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:42,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:42,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:03:42,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136026547] [2022-01-10 18:03:42,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:42,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:03:42,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:42,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:03:42,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:03:42,317 INFO L87 Difference]: Start difference. First operand 1486 states and 2531 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 18:03:42,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:42,872 INFO L93 Difference]: Finished difference Result 6898 states and 11767 transitions. [2022-01-10 18:03:42,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:03:42,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 18:03:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:42,900 INFO L225 Difference]: With dead ends: 6898 [2022-01-10 18:03:42,900 INFO L226 Difference]: Without dead ends: 6468 [2022-01-10 18:03:42,904 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 18:03:42,905 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 3757 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 4179 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:42,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3757 Valid, 4179 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:42,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6468 states. [2022-01-10 18:03:43,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6468 to 2825. [2022-01-10 18:03:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2823 states have (on average 1.7176762309599716) internal successors, (4849), 2824 states have internal predecessors, (4849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4849 transitions. [2022-01-10 18:03:43,136 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4849 transitions. Word has length 64 [2022-01-10 18:03:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:43,137 INFO L470 AbstractCegarLoop]: Abstraction has 2825 states and 4849 transitions. [2022-01-10 18:03:43,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 18:03:43,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4849 transitions. [2022-01-10 18:03:43,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:03:43,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:43,143 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 18:03:43,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:03:43,143 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:43,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:43,144 INFO L85 PathProgramCache]: Analyzing trace with hash -73218213, now seen corresponding path program 1 times [2022-01-10 18:03:43,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:43,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453873795] [2022-01-10 18:03:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:43,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:43,225 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 18:03:43,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:43,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453873795] [2022-01-10 18:03:43,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453873795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:43,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:43,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:03:43,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915907337] [2022-01-10 18:03:43,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:43,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:03:43,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:43,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:03:43,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:03:43,227 INFO L87 Difference]: Start difference. First operand 2825 states and 4849 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:43,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:43,441 INFO L93 Difference]: Finished difference Result 3274 states and 5542 transitions. [2022-01-10 18:03:43,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:03:43,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 18:03:43,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:43,452 INFO L225 Difference]: With dead ends: 3274 [2022-01-10 18:03:43,452 INFO L226 Difference]: Without dead ends: 2825 [2022-01-10 18:03:43,454 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 18:03:43,454 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 486 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:43,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1727 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2022-01-10 18:03:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2825. [2022-01-10 18:03:43,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2823 states have (on average 1.7144881331916402) internal successors, (4840), 2824 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4840 transitions. [2022-01-10 18:03:43,702 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4840 transitions. Word has length 64 [2022-01-10 18:03:43,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:43,703 INFO L470 AbstractCegarLoop]: Abstraction has 2825 states and 4840 transitions. [2022-01-10 18:03:43,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:43,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4840 transitions. [2022-01-10 18:03:43,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:03:43,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:43,709 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 18:03:43,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:03:43,710 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:43,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:43,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1496394582, now seen corresponding path program 1 times [2022-01-10 18:03:43,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:43,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259693046] [2022-01-10 18:03:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:43,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:43,899 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 18:03:43,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:43,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259693046] [2022-01-10 18:03:43,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259693046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:43,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:43,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:03:43,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936774593] [2022-01-10 18:03:43,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:43,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:43,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:43,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:43,901 INFO L87 Difference]: Start difference. First operand 2825 states and 4840 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:44,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:44,447 INFO L93 Difference]: Finished difference Result 4827 states and 7768 transitions. [2022-01-10 18:03:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:03:44,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:03:44,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:44,463 INFO L225 Difference]: With dead ends: 4827 [2022-01-10 18:03:44,463 INFO L226 Difference]: Without dead ends: 4414 [2022-01-10 18:03:44,465 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 18:03:44,466 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 1558 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:44,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1558 Valid, 2517 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:44,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4414 states. [2022-01-10 18:03:44,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4414 to 3293. [2022-01-10 18:03:44,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3293 states, 3291 states have (on average 1.6830750531753267) internal successors, (5539), 3292 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 5539 transitions. [2022-01-10 18:03:44,746 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 5539 transitions. Word has length 67 [2022-01-10 18:03:44,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:44,747 INFO L470 AbstractCegarLoop]: Abstraction has 3293 states and 5539 transitions. [2022-01-10 18:03:44,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 5539 transitions. [2022-01-10 18:03:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:03:44,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:44,753 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 18:03:44,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:03:44,754 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:44,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:44,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1157088473, now seen corresponding path program 1 times [2022-01-10 18:03:44,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:44,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822122383] [2022-01-10 18:03:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:44,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:44,904 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 18:03:44,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:44,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822122383] [2022-01-10 18:03:44,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822122383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:44,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:44,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:03:44,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359642979] [2022-01-10 18:03:44,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:44,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:03:44,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:44,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:03:44,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:03:44,906 INFO L87 Difference]: Start difference. First operand 3293 states and 5539 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 18:03:45,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:45,278 INFO L93 Difference]: Finished difference Result 4012 states and 6606 transitions. [2022-01-10 18:03:45,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:03:45,279 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 18:03:45,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:45,285 INFO L225 Difference]: With dead ends: 4012 [2022-01-10 18:03:45,285 INFO L226 Difference]: Without dead ends: 3183 [2022-01-10 18:03:45,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-01-10 18:03:45,287 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 1367 mSDsluCounter, 3883 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 4639 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:45,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1367 Valid, 4639 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:45,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2022-01-10 18:03:45,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 3165. [2022-01-10 18:03:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3163 states have (on average 1.6727790072715776) internal successors, (5291), 3164 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 5291 transitions. [2022-01-10 18:03:45,522 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 5291 transitions. Word has length 68 [2022-01-10 18:03:45,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:45,522 INFO L470 AbstractCegarLoop]: Abstraction has 3165 states and 5291 transitions. [2022-01-10 18:03:45,522 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 18:03:45,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 5291 transitions. [2022-01-10 18:03:45,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 18:03:45,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:45,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:45,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:03:45,527 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:45,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1755475590, now seen corresponding path program 1 times [2022-01-10 18:03:45,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:45,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155815979] [2022-01-10 18:03:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:45,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:45,604 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 18:03:45,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:45,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155815979] [2022-01-10 18:03:45,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155815979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:45,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:45,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:03:45,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321693691] [2022-01-10 18:03:45,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:45,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:03:45,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:45,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:03:45,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:03:45,606 INFO L87 Difference]: Start difference. First operand 3165 states and 5291 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:45,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:45,903 INFO L93 Difference]: Finished difference Result 4655 states and 7406 transitions. [2022-01-10 18:03:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:03:45,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 18:03:45,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:45,911 INFO L225 Difference]: With dead ends: 4655 [2022-01-10 18:03:45,911 INFO L226 Difference]: Without dead ends: 3842 [2022-01-10 18:03:45,913 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 18:03:45,914 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 402 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:45,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 2526 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:45,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-01-10 18:03:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3185. [2022-01-10 18:03:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 3183 states have (on average 1.6685516808042726) internal successors, (5311), 3184 states have internal predecessors, (5311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 5311 transitions. [2022-01-10 18:03:46,154 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 5311 transitions. Word has length 81 [2022-01-10 18:03:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:46,154 INFO L470 AbstractCegarLoop]: Abstraction has 3185 states and 5311 transitions. [2022-01-10 18:03:46,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 5311 transitions. [2022-01-10 18:03:46,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 18:03:46,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:46,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:46,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:03:46,159 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:46,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:46,159 INFO L85 PathProgramCache]: Analyzing trace with hash -743480926, now seen corresponding path program 1 times [2022-01-10 18:03:46,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:46,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006261337] [2022-01-10 18:03:46,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:46,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:46,280 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 18:03:46,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:46,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006261337] [2022-01-10 18:03:46,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006261337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:46,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:46,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:03:46,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668501474] [2022-01-10 18:03:46,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:46,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:03:46,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:46,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:03:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:03:46,282 INFO L87 Difference]: Start difference. First operand 3185 states and 5311 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:47,946 INFO L93 Difference]: Finished difference Result 10977 states and 16187 transitions. [2022-01-10 18:03:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 18:03:47,947 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 18:03:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:47,965 INFO L225 Difference]: With dead ends: 10977 [2022-01-10 18:03:47,965 INFO L226 Difference]: Without dead ends: 10056 [2022-01-10 18:03:47,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=750, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 18:03:47,969 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 5341 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5341 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:47,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5341 Valid, 5567 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:03:47,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10056 states. [2022-01-10 18:03:48,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10056 to 4473. [2022-01-10 18:03:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4473 states, 4471 states have (on average 1.6199955267278014) internal successors, (7243), 4472 states have internal predecessors, (7243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4473 states to 4473 states and 7243 transitions. [2022-01-10 18:03:48,408 INFO L78 Accepts]: Start accepts. Automaton has 4473 states and 7243 transitions. Word has length 82 [2022-01-10 18:03:48,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:48,408 INFO L470 AbstractCegarLoop]: Abstraction has 4473 states and 7243 transitions. [2022-01-10 18:03:48,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:48,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4473 states and 7243 transitions. [2022-01-10 18:03:48,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 18:03:48,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:48,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:48,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:03:48,416 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:48,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:48,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1445406886, now seen corresponding path program 1 times [2022-01-10 18:03:48,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:48,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761345320] [2022-01-10 18:03:48,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:48,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:48,497 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 18:03:48,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:48,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761345320] [2022-01-10 18:03:48,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761345320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:48,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:48,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:03:48,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054067038] [2022-01-10 18:03:48,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:48,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:48,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:48,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:48,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:48,498 INFO L87 Difference]: Start difference. First operand 4473 states and 7243 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:49,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:49,901 INFO L93 Difference]: Finished difference Result 11311 states and 17141 transitions. [2022-01-10 18:03:49,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:03:49,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 18:03:49,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:49,919 INFO L225 Difference]: With dead ends: 11311 [2022-01-10 18:03:49,919 INFO L226 Difference]: Without dead ends: 9324 [2022-01-10 18:03:49,925 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 18:03:49,925 INFO L933 BasicCegarLoop]: 746 mSDtfsCounter, 1446 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:49,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 2598 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:49,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9324 states. [2022-01-10 18:03:50,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9324 to 6819. [2022-01-10 18:03:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6819 states, 6817 states have (on average 1.57356608478803) internal successors, (10727), 6818 states have internal predecessors, (10727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6819 states to 6819 states and 10727 transitions. [2022-01-10 18:03:50,679 INFO L78 Accepts]: Start accepts. Automaton has 6819 states and 10727 transitions. Word has length 83 [2022-01-10 18:03:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:50,680 INFO L470 AbstractCegarLoop]: Abstraction has 6819 states and 10727 transitions. [2022-01-10 18:03:50,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6819 states and 10727 transitions. [2022-01-10 18:03:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 18:03:50,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:50,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:50,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:03:50,689 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:50,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:50,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1005157367, now seen corresponding path program 1 times [2022-01-10 18:03:50,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:50,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989822011] [2022-01-10 18:03:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:50,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:03:50,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:50,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989822011] [2022-01-10 18:03:50,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989822011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:50,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:50,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:03:50,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703679201] [2022-01-10 18:03:50,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:50,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:03:50,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:50,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:03:50,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:03:50,781 INFO L87 Difference]: Start difference. First operand 6819 states and 10727 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:03:52,502 INFO L93 Difference]: Finished difference Result 14983 states and 22387 transitions. [2022-01-10 18:03:52,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:03:52,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 18:03:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:03:52,522 INFO L225 Difference]: With dead ends: 14983 [2022-01-10 18:03:52,522 INFO L226 Difference]: Without dead ends: 11106 [2022-01-10 18:03:52,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:03:52,528 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 1234 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:03:52,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 2685 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:03:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11106 states. [2022-01-10 18:03:53,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11106 to 7773. [2022-01-10 18:03:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7773 states, 7771 states have (on average 1.554111439969116) internal successors, (12077), 7772 states have internal predecessors, (12077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 12077 transitions. [2022-01-10 18:03:53,610 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 12077 transitions. Word has length 84 [2022-01-10 18:03:53,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:03:53,610 INFO L470 AbstractCegarLoop]: Abstraction has 7773 states and 12077 transitions. [2022-01-10 18:03:53,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:03:53,610 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 12077 transitions. [2022-01-10 18:03:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:03:53,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:03:53,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:03:53,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:03:53,624 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:03:53,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:03:53,624 INFO L85 PathProgramCache]: Analyzing trace with hash 677104925, now seen corresponding path program 1 times [2022-01-10 18:03:53,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:03:53,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034938798] [2022-01-10 18:03:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:03:53,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:03:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:03:53,757 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 18:03:53,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:03:53,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034938798] [2022-01-10 18:03:53,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034938798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:03:53,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:03:53,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:03:53,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901535978] [2022-01-10 18:03:53,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:03:53,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:03:53,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:03:53,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:03:53,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:03:53,759 INFO L87 Difference]: Start difference. First operand 7773 states and 12077 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:02,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:02,917 INFO L93 Difference]: Finished difference Result 56089 states and 82991 transitions. [2022-01-10 18:04:02,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 18:04:02,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 18:04:02,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:03,019 INFO L225 Difference]: With dead ends: 56089 [2022-01-10 18:04:03,020 INFO L226 Difference]: Without dead ends: 52636 [2022-01-10 18:04:03,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=785, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 18:04:03,040 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 8105 mSDsluCounter, 6802 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8105 SdHoareTripleChecker+Valid, 7609 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:03,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8105 Valid, 7609 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 18:04:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52636 states. [2022-01-10 18:04:06,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52636 to 20866. [2022-01-10 18:04:06,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20866 states, 20864 states have (on average 1.5299079754601228) internal successors, (31920), 20865 states have internal predecessors, (31920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20866 states to 20866 states and 31920 transitions. [2022-01-10 18:04:06,618 INFO L78 Accepts]: Start accepts. Automaton has 20866 states and 31920 transitions. Word has length 85 [2022-01-10 18:04:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:06,619 INFO L470 AbstractCegarLoop]: Abstraction has 20866 states and 31920 transitions. [2022-01-10 18:04:06,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 20866 states and 31920 transitions. [2022-01-10 18:04:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:04:06,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:06,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:06,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:04:06,646 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:04:06,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:06,647 INFO L85 PathProgramCache]: Analyzing trace with hash 102667835, now seen corresponding path program 1 times [2022-01-10 18:04:06,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:06,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519113909] [2022-01-10 18:04:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:06,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:06,732 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 18:04:06,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:06,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519113909] [2022-01-10 18:04:06,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519113909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:06,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:06,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:04:06,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499104756] [2022-01-10 18:04:06,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:06,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:04:06,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:06,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:04:06,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:04:06,734 INFO L87 Difference]: Start difference. First operand 20866 states and 31920 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:12,544 INFO L93 Difference]: Finished difference Result 41452 states and 60818 transitions. [2022-01-10 18:04:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:04:12,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 18:04:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:12,590 INFO L225 Difference]: With dead ends: 41452 [2022-01-10 18:04:12,590 INFO L226 Difference]: Without dead ends: 31355 [2022-01-10 18:04:12,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:12,610 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 388 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:12,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 2486 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:12,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31355 states. [2022-01-10 18:04:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31355 to 21066. [2022-01-10 18:04:15,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21066 states, 21064 states have (on average 1.5248765666540067) internal successors, (32120), 21065 states have internal predecessors, (32120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21066 states to 21066 states and 32120 transitions. [2022-01-10 18:04:16,011 INFO L78 Accepts]: Start accepts. Automaton has 21066 states and 32120 transitions. Word has length 85 [2022-01-10 18:04:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:16,011 INFO L470 AbstractCegarLoop]: Abstraction has 21066 states and 32120 transitions. [2022-01-10 18:04:16,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:16,012 INFO L276 IsEmpty]: Start isEmpty. Operand 21066 states and 32120 transitions. [2022-01-10 18:04:16,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:04:16,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:16,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:16,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:04:16,041 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:04:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:16,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1256481354, now seen corresponding path program 1 times [2022-01-10 18:04:16,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:16,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140683187] [2022-01-10 18:04:16,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:16,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:16,129 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 18:04:16,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:16,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140683187] [2022-01-10 18:04:16,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140683187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:16,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:16,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:04:16,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505389864] [2022-01-10 18:04:16,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:16,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:04:16,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:16,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:04:16,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:04:16,130 INFO L87 Difference]: Start difference. First operand 21066 states and 32120 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:19,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:19,535 INFO L93 Difference]: Finished difference Result 36024 states and 53888 transitions. [2022-01-10 18:04:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:04:19,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 18:04:19,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:19,565 INFO L225 Difference]: With dead ends: 36024 [2022-01-10 18:04:19,565 INFO L226 Difference]: Without dead ends: 21305 [2022-01-10 18:04:19,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:04:19,578 INFO L933 BasicCegarLoop]: 753 mSDtfsCounter, 1234 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:19,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 3426 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:19,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21305 states. [2022-01-10 18:04:22,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21305 to 21066. [2022-01-10 18:04:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21066 states, 21064 states have (on average 1.5180402582605392) internal successors, (31976), 21065 states have internal predecessors, (31976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:22,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21066 states to 21066 states and 31976 transitions. [2022-01-10 18:04:22,740 INFO L78 Accepts]: Start accepts. Automaton has 21066 states and 31976 transitions. Word has length 85 [2022-01-10 18:04:22,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:22,741 INFO L470 AbstractCegarLoop]: Abstraction has 21066 states and 31976 transitions. [2022-01-10 18:04:22,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:22,741 INFO L276 IsEmpty]: Start isEmpty. Operand 21066 states and 31976 transitions. [2022-01-10 18:04:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:04:22,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:22,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:04:22,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:04:22,767 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:04:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:22,768 INFO L85 PathProgramCache]: Analyzing trace with hash 854809015, now seen corresponding path program 1 times [2022-01-10 18:04:22,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:22,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879123678] [2022-01-10 18:04:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:22,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:22,841 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 18:04:22,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:22,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879123678] [2022-01-10 18:04:22,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879123678] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:22,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:22,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:22,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770053789] [2022-01-10 18:04:22,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:22,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:22,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:22,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:22,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:22,842 INFO L87 Difference]: Start difference. First operand 21066 states and 31976 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:28,753 INFO L93 Difference]: Finished difference Result 42507 states and 62247 transitions. [2022-01-10 18:04:28,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 18:04:28,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 18:04:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:28,796 INFO L225 Difference]: With dead ends: 42507 [2022-01-10 18:04:28,797 INFO L226 Difference]: Without dead ends: 31410 [2022-01-10 18:04:28,813 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 18:04:28,815 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 406 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:28,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 3350 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31410 states. [2022-01-10 18:04:32,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31410 to 21770. [2022-01-10 18:04:32,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21770 states, 21768 states have (on average 1.5051451672179346) internal successors, (32764), 21769 states have internal predecessors, (32764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21770 states to 21770 states and 32764 transitions. [2022-01-10 18:04:32,416 INFO L78 Accepts]: Start accepts. Automaton has 21770 states and 32764 transitions. Word has length 85 [2022-01-10 18:04:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:32,416 INFO L470 AbstractCegarLoop]: Abstraction has 21770 states and 32764 transitions. [2022-01-10 18:04:32,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 21770 states and 32764 transitions. [2022-01-10 18:04:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:04:32,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:32,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:32,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:04:32,468 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:04:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1855628036, now seen corresponding path program 1 times [2022-01-10 18:04:32,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:32,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432431008] [2022-01-10 18:04:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:32,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:32,518 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 18:04:32,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:32,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432431008] [2022-01-10 18:04:32,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432431008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:32,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:32,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:04:32,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899868244] [2022-01-10 18:04:32,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:32,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:04:32,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:32,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:04:32,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:04:32,519 INFO L87 Difference]: Start difference. First operand 21770 states and 32764 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:37,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:37,360 INFO L93 Difference]: Finished difference Result 35186 states and 51334 transitions. [2022-01-10 18:04:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:04:37,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 18:04:37,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:37,406 INFO L225 Difference]: With dead ends: 35186 [2022-01-10 18:04:37,406 INFO L226 Difference]: Without dead ends: 26023 [2022-01-10 18:04:37,418 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 18:04:37,418 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 701 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:37,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 1766 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:37,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26023 states. [2022-01-10 18:04:40,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26023 to 21770. [2022-01-10 18:04:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21770 states, 21768 states have (on average 1.5044101433296582) internal successors, (32748), 21769 states have internal predecessors, (32748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21770 states to 21770 states and 32748 transitions. [2022-01-10 18:04:40,947 INFO L78 Accepts]: Start accepts. Automaton has 21770 states and 32748 transitions. Word has length 85 [2022-01-10 18:04:40,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:40,947 INFO L470 AbstractCegarLoop]: Abstraction has 21770 states and 32748 transitions. [2022-01-10 18:04:40,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand 21770 states and 32748 transitions. [2022-01-10 18:04:40,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:04:40,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:40,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:40,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:04:40,969 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:04:40,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:40,970 INFO L85 PathProgramCache]: Analyzing trace with hash -886047013, now seen corresponding path program 1 times [2022-01-10 18:04:40,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:40,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509554543] [2022-01-10 18:04:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:40,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:41,046 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 18:04:41,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:41,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509554543] [2022-01-10 18:04:41,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509554543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:41,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:41,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:41,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558280115] [2022-01-10 18:04:41,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:41,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:04:41,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:41,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:04:41,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:04:41,047 INFO L87 Difference]: Start difference. First operand 21770 states and 32748 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)